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Search found 86 matches

by 48kenworth
Wed Apr 15, 2020 7:54 am
Forum: Transmission & Drivetrain
Topic: Speedometer cable question?
Replies: 2
Views: 1236

Re: Speedometer cable question?

Thanks! The info makes it alot easier.
by 48kenworth
Tue Apr 14, 2020 10:14 pm
Forum: Transmission & Drivetrain
Topic: Speedometer cable question?
Replies: 2
Views: 1236

Speedometer cable question?

So i am stuffing a 1979 f250 4x4 rolling chassis under my 78 f100 2wd body. Changing the mainshaft and rear housing on my np435 is easy enough to do and it appears my easy transfer case options are either the np205, np208, bw1345, or bw1356. What im having a hard time figuring out is if the speedome...
by 48kenworth
Sun Apr 12, 2020 3:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

No, you did great. Don't have any suggestions beyond what you already have tried. I didn't mean to come across as you not being knowledgeable. You hadn't replied to my previous post so I didn't know what you had tried as far as carb tuning. I was pushing for a reply. My apologies. You can never hav...
by 48kenworth
Fri Apr 10, 2020 9:38 am
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

Unlike other carburetors you can tune the Edelbrock AVS2 so it can stay rich at idle and lean out at very small throttle openings for cruising. It comes with a great tuning chart Why not just tune the carb? I have tuned the carb. I even purchased an afr gauge to ease the process. The issue i run in...
by 48kenworth
Thu Apr 09, 2020 9:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

I was able to bandaid the issue by richening my idle mixture. I was trying to avoid doing so for economy reasons but.... I have found the ideal solution to the issue. I have purchased a 79 f250 4x4 rolling chassis with 4.10 gears along with a t19 trans that has a np208 bolted to it. The 208 was not ...
by 48kenworth
Thu Apr 09, 2020 9:35 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

48 Kenworth...I ran a 56 or7 for a while torsion spring if I remember rightly which might be getting. Confused with the 66 and a 318 jimee. Anyhoo about spreadbores , please consider a q jet. It's hands down the best designed carb ever. It has no shortcomings as design goes. And it would work perfe...
by 48kenworth
Wed Feb 26, 2020 1:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

Yes I believe you were the other defective cam case I was referring to. What about a spread bore style carburetor? If you spring for some form of self learning Throttle Body EFI be sure you can control the fuel mapping in the problem areas. What is the initial ignition timing with the vacuum advanc...
by 48kenworth
Thu Feb 20, 2020 7:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

While regearing or or hanging A tcase to use as a splitter are all ideas that would help overcome the symptoms they are not viable options. Smaller tire are not either since im already running a fairly small 235/75/15 on this pickup. My question was more based in the assumption that since a steady ...
by 48kenworth
Tue Feb 18, 2020 4:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

While regearing or or hanging A tcase to use as a splitter are all ideas that would help overcome the symptoms they are not viable options. Smaller tire are not either since im already running a fairly small 235/75/15 on this pickup. My question was more based in the assumption that since a steady v...
by 48kenworth
Mon Feb 17, 2020 9:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

I went through the same thing with my Bronco. The cam was a Comp 268H. With an Offy DP and a manual transmission, it was tough to crawl around off road. It would surge, lunge, buck and stall under 1000 RPM. Same engine with a carefully tuned multiport injection (Megasquirt) did the same thing. I tr...
by 48kenworth
Mon Feb 17, 2020 9:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

...all good points but for field work a 4.10 rear would be even better,perhaps ideal. Assuming there may often be a trailer in the equation, or an oversized load going from here to there 50 gallon of fuel in the carry tank etc I have 410 in my dually 4x. Works out . I agree a 4.10 would make field ...
by 48kenworth
Mon Feb 17, 2020 9:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

Did you adjust the idle mixture screws for maximum intake manifold vacuum at idle? That particular camshaft will require a minimum initial ignition timing of at least 16 degrees BTDC checked with the vacuum advance disconnected. What did you set the timing at? My base timing is at 20 degress now be...
by 48kenworth
Mon Feb 17, 2020 9:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

Re: A question about aftermarket TBI?

Re gearing crossed my mind but the 2.75's were fine with the stock 300 and it spends just enough time on the interstate to make a shorter ratio impractical. I need to keep what ive gained and get back some of what ive lost. Its the valve overlap thats killing me, if i tune the idle super rich ( read...
by 48kenworth
Sun Feb 16, 2020 5:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A question about aftermarket TBI?
Replies: 29
Views: 3745

A question about aftermarket TBI?

So a good while back yall helped me decide how to build my engine. So as i sit im running a .030 over 300 with a ported 240 head and polished combustion chambers, Schneider 140h cam, offy dp intake, edelbrock 1901 carb and efi exhaust manifolds. Static compression is right at 9.1-1 and dynamic is a ...
by 48kenworth
Thu Aug 08, 2019 11:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Edelbrock avs2 1901
Replies: 12
Views: 2655

Re: Edelbrock avs2 1901

I have a 1901 edelbrock with EFI manifolds, it was great with the stock cam, now with the Schneider 140h it is a tad temperamental when cold and will boil over if I shut it down after a hard run. I will say the driveability of the carb is phenomenal. Thanks for the feedback. The fact that it will b...
by 48kenworth
Mon Aug 05, 2019 9:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Sounds Good. Glad to hear the stock rockers are working with .480" lift and stiffer springs. After all that work please tell us how it runs. Good torque from idle? What rpm will it pull to in higher gears? Gas Mileage? I sacrificed a little below 1100 rpm but it will still idle along with 4,00...
by 48kenworth
Mon Aug 05, 2019 7:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

The new radiator. The old one was a 18 1/4 by 18 1/4. 1 core. This one 19 1/2 by nearly 26 3 core. Problem solved.
by 48kenworth
Mon Aug 05, 2019 7:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Quick walk around at idle and an engine shot. Nearly 500 miles on it stock rockers and no squeak!
https://youtu.be/44ckjF8ubNM

Don't pay any mind to the fact that is sounds like it has a whipple...
by 48kenworth
Mon Aug 05, 2019 7:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Edelbrock avs2 1901
Replies: 12
Views: 2655

Re: Edelbrock avs2 1901

I have a 1901 edelbrock with EFI manifolds, it was great with the stock cam, now with the Schneider 140h it is a tad temperamental when cold and will boil over if I shut it down after a hard run. I will say the driveability of the carb is phenomenal.
by 48kenworth
Thu Jul 25, 2019 10:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

I drove it to work today. Runs great, but now I have a new issue to tackle. My 78 f100 has the tiny 18 1/12 x 18 1/2 radiator and that is no longer even close to enough. She gets hot! If I drive light footed and keep it under 60mph it will stay very cool but 65 for a long run on the interstate gets ...
by 48kenworth
Sat Jul 20, 2019 10:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

pmuller9 wrote:Did you use the 1.75 ratio Chevy rocker arms or did you go back to the stock 1.6 ratio rocker arms?

1.6 ratio stock rocker arms.
by 48kenworth
Sat Jul 20, 2019 4:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Thanks to everybody for sticking with me through this. In the next week or two I will try to figure out how to post a video and show y'all idle quality and a full throttle run. I will also update on what Schneider has to say about the first cam they sent.
by 48kenworth
Sat Jul 20, 2019 11:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

That's as good as it gets. Nice job! Did you take the time to check the exhaust lobe timing? I did not. It's in, broken in, and made a trip to town to get gas. So about 20 miles, I have not opened the secondaries yet but it runs great has a surprisingly smooth idle and takes very little throttle to...
by 48kenworth
Fri Jul 19, 2019 8:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Ok. I check this cam three times, same numbers every time.
Intake opens
1 btdc
Intake closes
40 abdc
Centerline comes out to 109
I'm happy with that. Yes I put the little bevel in the ring facing the cam.
by 48kenworth
Wed Jul 17, 2019 10:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

I just looked up Royal Purple break-in oil. (I haven’t used it), but it looks good. It’s mineral oil based with an additive package for break-in. (You don’t add anything else to the oil) Does Schneider use a grease type cam lube or black moly paste? I thought it was an extreme pressure grease, but ...
by 48kenworth
Wed Jul 17, 2019 10:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

I hope 15 gallons per minute of diesel was enough... I did all 12 lifter bores then ran a fare bit through the front of the pan.
by 48kenworth
Wed Jul 17, 2019 8:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Schneider shipped my new cam and lifters out today. They did make me pay a marginal fee for them but agreed to refund that fee after they get a chance to look over the old cam and determine it wasn't my fault. They told me they opened the Lsa on my replacement cam to 112 because they feel I will li...
by 48kenworth
Tue Jul 16, 2019 7:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Schneider shipped my new cam and lifters out today. They did make me pay a marginal fee for them but agreed to refund that fee after they get a chance to look over the old cam and determine it wasn't my fault. They told me they opened the Lsa on my replacement cam to 112 because they feel I will lik...
by 48kenworth
Tue Jul 16, 2019 7:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

When you put the spacer ring back on the camshaft be sure the beveled edge on the inside diameter of the ring is facing the cam and the flat side is up against the cam gear. What valves do you have in the head? Stock sized valves, I didn't see needing to go any bigger for the rpm range I am wanting...
by 48kenworth
Sun Jul 14, 2019 9:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Hi 48kenworth, from your above picture it looks as though the camshaft damage might of been caused by the cam moving excessively. :bang: I suspect that the cam spacer / wedding ring wasn't transferred over from the old camshaft during the new cams installation (see below link for an idea of what th...
by 48kenworth
Fri Jul 12, 2019 10:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

I used the valve springs Schneider sent me as per their instruction. If they do warranty the cam I will likely use break in oil for the next one unless Schneider recommends against it, I doubt they would though.
by 48kenworth
Fri Jul 12, 2019 5:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

They asked for pictures. Said it may still be warranty. It was broken in with normal 10w30 along with the additive and assembly lube Schneider sent, fired the engine and as soon as it got oil pressure it went to 3 grand and was gradually fluctuated from 1500 to 3000 for 30 solid minutes. The schnied...
by 48kenworth
Fri Jul 12, 2019 4:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

There is more to it now. I got the cam out..... even being wrong I doubt they will warranty it.
by 48kenworth
Fri Jul 12, 2019 2:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Intake opens 15 tdc Intake closes 35 abdc Exhaust opens 43 bbdc Exhaust closes 4 atdc Checked it three times, each time was within 1 degree. Guy at Schneider said send it back. He was very helpful, I gave him the numbers I came up with and he explained to me how my engine runs spot on. He suspects I...
by 48kenworth
Thu Jul 11, 2019 7:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Yeah, I'm confused. First you said exhaust at .105", then .050", then ICL. I'd remeasure it all a few times to be sure. I worded it poorly. At the mark where the intake should be at .050 lift it is at .105 lift. I took half a day off tomorrow to deal with this. We should have solid answer...
by 48kenworth
Wed Jul 10, 2019 10:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Thanks for the cam card. It shows the exhaust .050" closing point at 1 degree BTDC (Same as -1 ATDC) and you are showing it at 2 ATDC which is close. You should then show the intake lifter .050" lift point right at TDC taking the 3 degree shift into account. Please check both one more tim...
by 48kenworth
Wed Jul 10, 2019 10:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Did you check all events the first time? Timing at .050” open and close for intake and exhaust? Something is not adding up if the cam is ground to the card specs. Time to get a degree wheel back on and go through all the timing events. Unfortunately I just zipped through the #1 intake centerline wh...
by 48kenworth
Wed Jul 10, 2019 9:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Cam card for your viewing pleasure..
by 48kenworth
Wed Jul 10, 2019 9:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

At the same spot the #1 ext is at .105 lift. At .050 on the down side of the ext lobe the timing marks show 2 atdc.

Edit: I checked it coming from both sides of the lobe, aka rolling backwards up to .050 and going all the way over the lobe to .050 and got the same thing.
by 48kenworth
Tue Jul 09, 2019 10:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Each tooth on the crank timing gear is 12.4 degrees so it is possible the gear set is one tooth off. In any case the cam timing needs to be redone and the timing tab versus the mark on the harmonic balancer needs to verified with the piston at TDC. How did you zero the degree wheel? Did you use a p...
by 48kenworth
Tue Jul 09, 2019 10:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

guhfluh wrote:By the way, that looks advanced...depending what is true TDC on the balancer.

Yea I edited my post after I scyfered on it for a minute.
by 48kenworth
Tue Jul 09, 2019 10:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Ok. So far I owe an apology and a thanks to those that have stuck with me. I repair diesels for a living but this isn't the same. I must have fudged pretty bad on my degreeing, even alotting for balancer slippage the cam is very retarded. The mark shows 14 degrees on the balancer. So I guess the que...
by 48kenworth
Tue Jul 09, 2019 9:04 am
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

I am still running the 1.73 stamped rocker, although I did dig out the stockers. It will be easy enough to swap the stock rockers onto it. I also figure if I do come to yanking the cam back out I will at least recheck the degree on it first to verify I didn't make a mistake the first time.
by 48kenworth
Mon Jul 08, 2019 9:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

The cam card said 108 degrees. Actually came out to 109 degrees installed straight up so I left it be.
by 48kenworth
Mon Jul 08, 2019 8:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

MechRick wrote:Does it happen after the engine is warm? I'm wondering if the valves are sticking in the guides when warm.

You might try a running compression test after the engine is good and warm.


Warm operation is actually dramatically better than cold, no where near good enough to idle along with a load.
by 48kenworth
Mon Jul 08, 2019 8:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

The 140H cam does not act that way if all else is good. So we are all clear and remove any subjectiveness from the conversation, the driveability issues are all below 1300ish rpm and include. Poor cold engine manners ( think Rich/ lean cycling), very low power when attempting to engage the clutch a...
by 48kenworth
Mon Jul 08, 2019 7:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

#1: 140 4 turns to achieve max pressure #2: 135 4 turns #3: 135 5 turns #4: 135 4 turns #5: 138 4 turns #6: 125 4 turns I'm not seeing anything just jumping out here as cause for it to lope so badly at idle. The numbers are lower than it was stock but I kind of expected that. Edit: I retested #6 wet...
by 48kenworth
Mon Jul 08, 2019 3:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

pmuller9 wrote:Before you do anything else, do a compression check to be sure the valve train is OK.
The 140H cam does not act that way if all else is good.


I'll check it this evening after work if I remember to carry the stuff home. I had 145-155 with the stock cam.
by 48kenworth
Mon Jul 08, 2019 1:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

The carb is the 1901 with annular boosters and does have a 1 inch spacer under it already to help with heat soak. I've tuned on it quite a bit and the fact is it behaves very similarly to every thing I have ever seen/driven/rode in that had high compression and a long duration camshaft. The lifter i...
by 48kenworth
Sun Jul 07, 2019 2:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: So I have a plan but now im Second guessing myself.
Replies: 120
Views: 14229

Re: So I have a plan but now im Second guessing myself.

Well crap! The issue may be starting to surface. I have two separate intermittent lifter ticks now. I know I ran the overhead right because I went through it twice with the tappet (lifter) cover off so I could be absolutely certain I sent preload on the base circle of the lobes. #1 intake goes to ti...