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Search found 231 matches

by GPGoverMPG
Sun Jul 28, 2019 8:24 am
Forum: 240-300 "Big Block" Six Performance
Topic: Finishing touches fresh build.
Replies: 4
Views: 326

Re: Finishing touches fresh build.

The simplicity and cost of the DSII is nice. If the distributor and the rest of the system is good it should provide a very reliable set up.
by GPGoverMPG
Sat Jul 20, 2019 7:43 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Yea I can make a tool. Was thinking of using old stamped rocker arm and welding a fork and handle to it. I've done the air thing using my leak down tester. Some times I use small rope to fill the cylinder and bring the piston up and the rope holds the valves closed. It's a manual trans so 4th gear a...
by GPGoverMPG
Fri Jul 19, 2019 7:47 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

I got the recommended comp springs and retainers, cam degree kit, and the valve spring micrometer. The springs look pretty strong so I was wondering if I should leave the inner coils out for cam break in or run the stock springs. I had kind of thought to just run the full spring set up because it lo...
by GPGoverMPG
Tue Jul 16, 2019 7:39 am
Forum: 240-300 "Big Block" Six Performance
Topic: Knocking noise; seems different from others
Replies: 8
Views: 1126

Re: Knocking noise; seems different from others

My story. My truck had an odd rattle sound driving at around 50mph or so. It was the light throttle changes to maintain speed that caused it to get loader or more noticeable. I played with ignition timing and fuel mixture and it would change but was still there to some extent. I ended up pulling the...
by GPGoverMPG
Sun Jul 14, 2019 8:28 am
Forum: 240-300 "Big Block" Six Performance
Topic: Base Timing & Vacuum Advance Update
Replies: 10
Views: 526

Re: Base Timing To Far Advanced

My mechanical advance will only pull in 18* max. I kept advancing the timing a bit at a time until I felt a little performance drop off driving the same route every time. I was doing short full throttle runs of maybe an 1/8 mile in third from 1000rpm up to my 4000rpm shift point. Once it stopped imp...
by GPGoverMPG
Sat Jul 13, 2019 7:56 am
Forum: 240-300 "Big Block" Six Performance
Topic: Base Timing & Vacuum Advance Update
Replies: 10
Views: 526

Re: Base Timing To Far Advanced

So it runs good but the base timing is high. To me it seems that the total advance (no vacuum advance) of 28* is way to low. Seems these motors like 36* to 38* total. So if he is not getting enough total advance it would affect his MPG. As I found you don't get full vacuum advance at WOT and Ignitio...
by GPGoverMPG
Wed Jul 03, 2019 8:02 am
Forum: 240-300 "Big Block" Six Performance
Topic: Some daily driver questions
Replies: 14
Views: 1143

Re: Some daily driver questions

I went with the buy another motor and build it method. It has the benefit of spreading the cost out over time and you know it's what you want. Make a good plan that fits your needs and stick to it (a do as I say not as I do moment). There is a ton of good advice here and you should have a great expe...
by GPGoverMPG
Tue Jul 02, 2019 8:14 am
Forum: 240-300 "Big Block" Six Performance
Topic: 2100s and E85
Replies: 7
Views: 537

Re: 2100s and E85

Kind of what I was wondering. Didn't know if the passages in the carb's were big enough to move the fuel required by E85. E85 is available here and it may be fun to build a motor just for it. I now have three complete 300's to mess with.
by GPGoverMPG
Sun Jun 23, 2019 8:08 am
Forum: 240-300 "Big Block" Six Performance
Topic: 2100s and E85
Replies: 7
Views: 537

Re: 2100s and E85

The current engine in the truck runs a little hotter than I would like. I was thinking E85 may help. I was also thinking with a .050 bore and the performance improvements my new engine is going to be generating more heat. I've checked and rechecked my current cooling system and it's all good. The bi...
by GPGoverMPG
Sat Jun 22, 2019 8:13 am
Forum: 240-300 "Big Block" Six Performance
Topic: 2100s and E85
Replies: 7
Views: 537

2100s and E85

So I'm building my new motor and trying to pay attention to every detail and ask the right questions. I'm sure it will run great on 93 octane pump gas. I find that as slow as my progress is that I have time to think and this may be a bad thing. Would E85 improve performance any? What will it do to t...
by GPGoverMPG
Mon Jun 17, 2019 8:23 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Re: Another piston question

I do have two very small plenums and straight runners about 14" long. The carbs will work at the same time and be syc'ed like motorcycle carbs. Runner length should be for peak torque around 3000rpm first time building intake so there is a lot I don't know. Will need to purchase two wide band O...
by GPGoverMPG
Sun Jun 16, 2019 8:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Re: Another piston question

Ok, I remember putting down several 1.23s. I will go look again just cause I don't remember seeing 1.33s doesn't mean their not there.
by GPGoverMPG
Sat Jun 15, 2019 9:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Re: Another piston question

They are flat top with 6cc valve pockets. Standard 360/390 FE pistons which makes them .050 oversize for the 300. I have opened up my combustion chambers for 78cc and I'm running big valves in the ported head. The Schneider 142f solid lifter cam and Harland Sharp 3002 roller rockers. So I am going t...
by GPGoverMPG
Sat Jun 15, 2019 8:36 am
Forum: 240-300 "Big Block" Six Performance
Topic: VINTAGE CHAMP CAR REPLICA BUILD
Replies: 51
Views: 6660

Re: VINTAGE CHAMP CAR REPLICA BUILD

Man that looks fun. I've wanted to build a replica of the old SCCA chaperal (spelling?) with the wing.
by GPGoverMPG
Sat Jun 15, 2019 8:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Re: Another piston question

The machine shop turned down a wrist pin so I could test fit my H395p speed pro pistons. The piston skirts missed the crank counter weights by at least .25inche. So much in fact I did not bother with an actual measurement. I also used this time to measure piston deck height. Using A straight edge an...
by GPGoverMPG
Thu Jun 13, 2019 8:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Re: Another piston question

Yea, shouldn't be any problems. I need to call my machine shop today and find out where I am. I was reading the thread about priority oiling and I was wondering if oil restrictors were used to the top end. FE motors I've built reduce the oil when using roller rockers. Guess I'll be putting the botto...
by GPGoverMPG
Wed Jun 12, 2019 8:11 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Re: Another piston question

Mocking it up is the way to know. He's looking for one of my old pistons to compare to we'll see. If it's even close I'd be best served by mocking it up. The only question is how many times can you install and torque bearing caps before you need to replace the bearings?
by GPGoverMPG
Mon Jun 10, 2019 8:24 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston question
Replies: 17
Views: 940

Another piston question

So I'm running the 390 pistons that I balanced. I took the rods and pistons to the machine shop to have them married and the shop called to see if I had clearanced the skirts for the crank. He said he had to do it on a previous 300 build. Does anyone know if this is something I need to look for with...
by GPGoverMPG
Mon Jun 03, 2019 7:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Have the crank in hand again. It was cut and polished to .010 - .010 and balanced. I asked and they said the crank is spun at 700rpm and the computer tells them where to drill. The computer says the crank should be good to 7000rpm a number it will never see. I dropped the balanced rods and pistons o...
by GPGoverMPG
Fri May 24, 2019 7:50 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Yes thanks a lot, I'm having fun building this motor and I'm really thankful for the help. I had forgotten to have the spring seats cut. I'll get that done when they install my screw in studs. Now that I know the rocker arms I'm running I can get the studs. I think I'm going to order the comp cam de...
by GPGoverMPG
Thu May 23, 2019 8:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Crank and flywheel are ready for me to pick up Friday. I have my pistons all within half a gram and the rod split weights within half a gram as well. I'll be leaving the rods and pistons to get married when I pick up the crank. I still need to purchase the 142f cam and lifters from Schneider and the...
by GPGoverMPG
Tue May 07, 2019 7:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: Need guidance on Master cylinder and slave cylinder
Replies: 6
Views: 443

Re: Need guidance on Master cylinder and slave cylinder

Those systems can be a real pain. I've had motorcycle front brakes wear me out. The bleeders are at the bottom and the air rises in the system. You may need to bleed at the master by loosing the line while the pedal is pressed. I have also had problems with the vehicle being jacked up in the front c...
by GPGoverMPG
Mon May 06, 2019 5:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Took crankshaft to machine shop. The key way has already been extended and it's going to be ground and polished. They are also going to replace my ring gear and surface my flywheel before balanceing it and my crank.
by GPGoverMPG
Sat May 04, 2019 2:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Piston wrist pin offset
Replies: 12
Views: 589

Re: Piston wrist pin offset

With my fat fingers on the caliper I measured .125 after subtraction. Split that in half and it's .06125 so basically .060. Everything is going great. Thanks
by GPGoverMPG
Sat May 04, 2019 7:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Piston wrist pin offset
Replies: 12
Views: 589

Re: Piston wrist pin offset

I think I understand the measurement method now. I was inside the pin to the outside of the skirt and could rock my caliper too much for a good reading. I will try the inside the piston plan today.
by GPGoverMPG
Fri May 03, 2019 4:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Piston wrist pin offset
Replies: 12
Views: 589

Re: Piston wrist pin offset

You know that sounds great. I tried the claliper thing in the wrist pin then turn the piston and remeasure. To inconsistent to know what the real offset is I know there is more than .006. I wish I could find better data like Keith black and silvo-light.
by GPGoverMPG
Fri May 03, 2019 1:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Sweet, I am going to run cowl induction all sealed up from the vents at bottom of windshield. I thought about from the cab but thought it would be to loud. Again thanks for the help
by GPGoverMPG
Fri May 03, 2019 1:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Piston wrist pin offset
Replies: 12
Views: 589

Re: Piston wrist pin offset

So there is certainly offset. I used information from Summit or Jegs on the .006 number could have been mine or their error. I can't really find a good site for speed-pro piston information. The notches facing forward on all 8 pistons makes the most sense. I don't remember where I saw the run 2 with...
by GPGoverMPG
Fri May 03, 2019 9:26 am
Forum: 240-300 "Big Block" Six Performance
Topic: Piston wrist pin offset
Replies: 12
Views: 589

Piston wrist pin offset

So the pistons I purchased have an advertised pin offset of .006 and the tops are all the same. Does this mean I need to have two installed backwards? Also, which one are correct left or right bank? I am going to measure the offset today. The pistons have the notch that you point to the front so the...
by GPGoverMPG
Fri May 03, 2019 8:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Picked up my cylinder head and the machine shop did a great job installing the new valves. They installed new valve guides and I have very little hand work to do cleaning up the bowl areas. The 194/160 SI valves with the dished faces did not help me in the combustion chamber cc's as I had hoped. My ...
by GPGoverMPG
Wed May 01, 2019 8:15 am
Forum: 240-300 "Big Block" Six Performance
Topic: Oil pump issue ?
Replies: 10
Views: 625

Re: Oil pump issue ?

Very nice, I want the pick up version bad. Hope it starts you may have left your lights on.
by GPGoverMPG
Wed May 01, 2019 8:11 am
Forum: 240-300 "Big Block" Six Performance
Topic: Top things to freshen up an old engine.
Replies: 16
Views: 961

Re: Top things to freshen up an old engine.

What was your oil pressure. Pretty easy to change rod and main bearings. I recently changed the rod bearings in my truck and would have done the mains but I didn't want to remove the manual transmission and xfer case. Helped my oil pressure a lot.
by GPGoverMPG
Fri Apr 26, 2019 8:35 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Yea I know, stay with the plan and quit changing things. I did get the call from the machine shop I can pick the head up Monday. I'll be able to play with chamber volume to get the exact cc in need. I will also make sure the bowls are blended nicely. I'll be making progress.
by GPGoverMPG
Fri Apr 26, 2019 7:07 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Still have not got my head back from the machine shop. It's driving me crazy not being able to do anything. So here's a question. Do I run the 142F cam with the 4002 rockers or run the 292-96F or the 148F to get more lift rather than run the 3002 rocker with the 142F. The 292-96F has the least affec...
by GPGoverMPG
Sat Apr 13, 2019 7:34 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

I'm thinking the 4002-7 will serve me well.
by GPGoverMPG
Fri Apr 12, 2019 7:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Thinking about the Harland Sharpe S4002 or S4002-7 the -7 uses the larger 7/16" stud and the valve train might be more stable. Their web site says they'll fit but I was hoping someone could confirm. So many choices. I was hoping for something a little less expensive given my slow cash flow but ...
by GPGoverMPG
Fri Apr 12, 2019 7:31 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Took the head in to the machine shop. They are going to install the oversize valves, set it up for good seals and pull the rocker studs. Should be able to finalize the combustion chamber volume. With the dished valve faces and a little clean up I should be able to get a couple cc. He didn't want to ...
by GPGoverMPG
Mon Apr 08, 2019 9:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

I need to get the big valves installed in the head. Have them do the smallest cleanup cut they can. Then I'll have my finial combustion chamber volume. I should pickup a cc or to with the valves. I really want my quench right.
by GPGoverMPG
Mon Apr 08, 2019 11:19 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

And this is why you check. The Pistons checked at 6cc. Making my compression a little crazy. Need to look at the numbers when I get home.
by GPGoverMPG
Sun Apr 07, 2019 7:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

I have not cc'ed a piston yet. My work bench is way to cluttered with work I was doing to make money to pay for my engine habit. Should be able to do it Monday. I keep things slow on Mondays so I can play with my own stuff.
by GPGoverMPG
Sat Apr 06, 2019 7:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Yet another cam question
Replies: 10
Views: 574

Re: Yet another cam question

It's right where I'm headed. When I degree the cam it's going to be figuring out which offset keys to run in which configuration. Are there straight cut timing gears available? It would make installing the cam simpler. I would rather not be pressing the cam gear on and off a bunch.
by GPGoverMPG
Fri Apr 05, 2019 7:43 am
Forum: 240-300 "Big Block" Six Performance
Topic: Hedman vs EFI headers
Replies: 23
Views: 1411

Re: Hedman vs EFI headers

When I was building my intake I had it mounted to the ported head I'm going to run with the valves removed. It was quite the revelation seeing the transitions. I going to run the EFI manifolds at least for a while guess I'll need to do the same thing. Making sure they line up right when installed wi...
by GPGoverMPG
Fri Apr 05, 2019 7:28 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Got my swing balance made and it works. Should be able to get everything weight matched now. I'll see if I can get some pictures today. It sure is fun to learn and do different things. Looks I'm going to need some more specialized tools before my next build.
by GPGoverMPG
Thu Apr 04, 2019 6:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 461
Views: 54469

Re: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress

Very cool video. My dad started taking me to the drags in Ohio when I was 11 years old in 1970. Those old videos are neat.
by GPGoverMPG
Thu Apr 04, 2019 6:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

I did build a swing balance need to finish the scale platform today. The test I ran yesterday looks like my weights will be repeatable. I have not polished and peened the rods I have the time so I guess I could I just didn't think it would matter much with the stock rods. I did have them checked and...
by GPGoverMPG
Wed Apr 03, 2019 7:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Working on building a rod balancing jig. My first attempt was not as repeatable as it needs to be. The pistons are 836 grams which is 30 grams more that the original I measured. When I did the math the pistons with a zero deck resulted in a 9.3:1 compression ratio. A tad lower than I'm shooting for ...
by GPGoverMPG
Sun Mar 31, 2019 4:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Re: Picked up my block and pistons from machine shop.

Yes the heads are 79cc but the head surface has not even had a clean up cut. The best information I can find on the pistons has the dish at 13cc I will need to cc one while I'm balancing them. As far as the cam goes yes, no, maybe. I have also been looking at the Schneider 142F solid lifter cam. For...
by GPGoverMPG
Sun Mar 31, 2019 10:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 42
Views: 2465

Picked up my block and pistons from machine shop.

Just got my block back from being cleaned and bored. The block was cleaned and checked and everything looked good it was bored 0.050 over to accept H395P Sealed Power pistons. Still waiting for the crank to be ground and polished which brings up first question. Is it true no bob weights are needed t...
by GPGoverMPG
Wed Mar 13, 2019 8:01 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine in truck, torque converter lined up, bolts not coming through flexplate
Replies: 2
Views: 310

Re: Engine in truck, torque converter lined up, bolts not coming through flexplate

All The bell housing bolts tight? Many years ago I let a bracket get in between the engine and bell housing and things would not go together right quit for the night and found it the next day easy. Now I check every time I install engines.
by GPGoverMPG
Wed Mar 13, 2019 7:38 am
Forum: 240-300 "Big Block" Six Performance
Topic: Clutch Options
Replies: 8
Views: 575

Re: Clutch Options

I'm very interested in this clutch thing as well. I should be making good power and torque when my motor is done. Playing in the mud and trying to keep wheel speed can make for aggressive shifts and the big tire np435 combo can make street driving hard on the clutch. I have used Zoom racing parts in...