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Search found 467 matches

by Wesman07
Sat Dec 23, 2017 2:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Does anyone know the stock valve timing events? The link in the facts section is not working.
by Wesman07
Thu Dec 21, 2017 6:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Ahh! Ok got it now. Thank you guys.
by Wesman07
Thu Dec 21, 2017 4:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Thank you, that one gets me every time. So when the vacuum drops to zero.. how does the computer know that this new engine wants more fuel? Will the manifold pressure be different?

If it was a carburetor, I would have to up the main jet
by Wesman07
Thu Dec 21, 2017 2:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

That makes sense if the computer stays in open loop. At wot the computer falls back to closed loop, ignoring the o2 sensor and runs off of a fuel table that's programmed in its memory. So if this motor makes more power at say 2,000 rpm... what is telling to computer to add more fuel at wot?
by Wesman07
Thu Dec 21, 2017 12:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

You bring up some very good points. So if I stick to the original plan, I would still run the risk of going beyond what the stock computer can handle. I would still need to check this with a wide band. And if I do run lean, I would need to limit my rpm... or is it possible to run lean through out th...
by Wesman07
Thu Dec 21, 2017 6:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I had seriously considered going to turbo route, but the time and money that it would take to do it right turned me off. I would be investing way too much into just one area of my truck. I would also never feel comfortable saying things like "sure babe, just take my truck". And I would pro...
by Wesman07
Wed Dec 20, 2017 8:50 pm
Forum: Fuel Injection - Mega Squirt
Topic: 300 fuel injection swap
Replies: 7
Views: 3445

Re: 300 fuel injection swap

Did you ever end up buying the pimp set up?
by Wesman07
Wed Dec 20, 2017 7:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Do you have a rough guess on the power out put?

Im just trying to justify the extra 1500 bucks and the time to learn mega squirt
by Wesman07
Wed Dec 20, 2017 4:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Ok, the hand work I can do and would enjoy doing. The longer valves and roller rockers arnt that much more work for the machinist, are they? Just need screw in studs? So this would roughly add $1,500 to the build... total around $3,000. What kind of gains could I expect? Worth the price? I would gue...
by Wesman07
Wed Dec 20, 2017 11:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I think this is one of the best ways to build a 300 EFI truck motor, and keep the factory fuel system. Simple, cheap, reliable. But, If I wanted the option to take this one step further... im assuming that would involve head work and a stand alone? Would head work alone yeild any benefits? Would mod...
by Wesman07
Sun Dec 17, 2017 4:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 277
Views: 61222

Re: 300 I6 EFI performance upgrades

If you overlay a late model 302 EFI truck motor it will have more torque throughout the operating range than a late model EFI 300. If you want to amplify the advantage of the higher HP at higher RPMs of the V8 then a gear change could do that too. Having said that, I just like the 300 six. I would ...
by Wesman07
Fri Dec 15, 2017 11:55 am
Forum: 240-300 "Big Block" Six Performance
Topic: Finding the right scale.
Replies: 17
Views: 2183

Re: Finding the right scale.

Great info!
by Wesman07
Thu Dec 14, 2017 9:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: heaviest you've towed with a 300.
Replies: 27
Views: 4867

Re: heaviest you've towed with a 300.

Ah I understand now. That would probably push everything back pretty far
by Wesman07
Wed Dec 13, 2017 9:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: heaviest you've towed with a 300.
Replies: 27
Views: 4867

Re: heaviest you've towed with a 300.

Can you elaborate on this idea more?

Would this be an additional shaft? Or modified what's already there to shrink the gap?
by Wesman07
Wed Dec 13, 2017 6:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Off Index Lobe Grinding
Replies: 21
Views: 2985

Re: Off Index Lobe Grinding

I know all of the new KTM two stroke motors have roller bearings at each end of the rod. Some of them even have a roller bearing on ONE side of the crank, I believe it is the side with the fly weight. Keep in mind that all those bearing are lubercated by the fuel oil. Ktm recommends 60:1. For the re...
by Wesman07
Wed Dec 13, 2017 11:38 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Was that the only year for feedback carbs?

I just remember it being a total birds nest with vacuum lines woven in, around and in between everything.
by Wesman07
Wed Dec 13, 2017 5:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Nope. I did the EFI swap back in 2006.

86 was the last year carburetored. I got so dam frustrated trying to keep the original motor running right that converting to EFI was the easiest solution.
by Wesman07
Tue Dec 12, 2017 10:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I have not... I am still working on the logistics. I have found a local machinist who I hear is good but a little pricey, and I would rather pay for quality. I also found an engine stand to barrow... but the location is stil in question. I am pretty maxed out in my garage now, two Dirtbike's, my par...
by Wesman07
Mon Dec 11, 2017 11:58 am
Forum: Transmission & Drivetrain
Topic: Which trans makes more noise?
Replies: 7
Views: 1619

Re: Which trans makes more noise?

Thanks for the replies. I have tried some insulation which helped a lot. I still think my trans is just as noisy as my motor... which seems a bit high.

Do any of you guys have foam inside your shifter boot?
by Wesman07
Wed Dec 06, 2017 10:01 am
Forum: 240-300 "Big Block" Six Performance
Topic: Propane compression ratio
Replies: 11
Views: 2040

Re: Propane compression ratio

Probably not from a finance point of view, but there are other benefits. I know the off road guys like it because they can flop their rigs upside down and not spill any fuel... and you can run the rpm's so low you think you stalled out, but nope your still running lol. I just figured there has to be...
by Wesman07
Wed Dec 06, 2017 5:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Propane compression ratio
Replies: 11
Views: 2040

Re: Propane compression ratio

That sounds pretty cool. What are the benefits of propane?
by Wesman07
Sun Dec 03, 2017 11:19 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 277
Views: 61222

Re: 300 I6 EFI performance upgrades

I don't know how much you can remove off the head before having issues. I don't think there is an exact number, it's more of a "avoid it if you can" type thing.

I know the Efi heads are prone to cracking, but I'm not sure where.
by Wesman07
Sun Dec 03, 2017 8:13 am
Forum: 240-300 "Big Block" Six Performance
Topic: max mpg from 300 in a lightweight vehicle.
Replies: 32
Views: 4932

Re: max mpg from 300 in a lightweight vehicle.

T bodies are cool but I think you would see your best mpgs at around 45 mph. Would increasing the rocker arm ratio increase lift enough to push the valve past the shoulder in the EFI head? Or enough that it would hurt the swirl effect? I remember xctasy talking about a "learn burn" motor.....
by Wesman07
Sat Dec 02, 2017 2:27 pm
Forum: Transmission & Drivetrain
Topic: Which trans makes more noise?
Replies: 7
Views: 1619

Re: Which trans makes more noise?

It got new syncros and maybe bearings around 130k. It probably has 230k on it now.

I tried the Lucas oil stabilizer and it helped some, but it's still pretty loud.
by Wesman07
Fri Dec 01, 2017 5:00 pm
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 3879

Re: 1986 F250 300 i6 efi conversion, SAS and more

Very cool.... I did almost the same thing lol
by Wesman07
Fri Dec 01, 2017 4:57 pm
Forum: Transmission & Drivetrain
Topic: Which trans makes more noise?
Replies: 7
Views: 1619

Re: Which trans makes more noise?

It's whiny is 2nd and 3rd when there is no load on it and the rpm's are above 2k
by Wesman07
Fri Dec 01, 2017 12:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Ok great! It was user error on my end. thank you!
by Wesman07
Fri Dec 01, 2017 11:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: 1995 F-150 4.9 Bolt-on Performance/ Recomendations
Replies: 4
Views: 1109

Re: 1995 F-150 4.9 Bolt-on Performance/ Recomendations

Avoid the lift kit. It has been my experience that the front suspensions on these trucks do not take modifications well. You will find yourself a frequent customer at the alignment shop. They just don't want to track straight. Further more, there isn't a chassis engineer at these lift kit company's....
by Wesman07
Fri Dec 01, 2017 5:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I just took a trip from Pennsylvania to Missouri and back. The truck weighed in at 6300 pounds. The air temp were around 50 degrees. Engine temp was on the low side. Going through the Mountains in Kentucky i was able to stay in 4th gear through most of it, but I started to hear some knocking. So I s...
by Wesman07
Thu Nov 30, 2017 10:10 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cam and possibly other upgrades on 300
Replies: 8
Views: 1588

Re: Cam and possibly other upgrades on 300

Metal timing gears are also a must with an aftermarket cam
by Wesman07
Thu Nov 30, 2017 5:49 am
Forum: Transmission & Drivetrain
Topic: Which trans makes more noise?
Replies: 7
Views: 1619

Which trans makes more noise?

Currently have a NP 435 and the trans is just as loud as my motor. Is the BG T19 any quieter??
by Wesman07
Wed Nov 29, 2017 11:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cam and possibly other upgrades on 300
Replies: 8
Views: 1588

Re: Cam and possibly other upgrades on 300

I think the big question is... what do you want to do with it?

There is a pretty solid data base of information here. Almost every combo has been done and reflected appon. Searching these old posts might help you decided what you really need and what's worth it.
by Wesman07
Sat Nov 25, 2017 9:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Yeah your right... it all makes sense. It's just the very different from what most people use for the same rpm range.
by Wesman07
Fri Nov 24, 2017 7:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I tracked down a junkyard engine. Complete 1994 4.9, still running for $380. Howard cams do not sell directly. They said try compitition products or summit... neither website showed a custom cam option for this motor... I will have to make some phone calls. Pmuller, do you think the 288 duration wil...
by Wesman07
Thu Nov 23, 2017 7:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Resurface warped heads at home?
Replies: 5
Views: 1249

Re: Resurface warped heads at home?

It works, no doubt about that. I use this method on my dirtbike engine cases. The crank and transmission sits inbetween two precision die cast aluminum cases. Being that the crank and main bearings in a 2 stroke is lubercated by the fuel oil, it is essential that the seal is not compromised. One tim...
by Wesman07
Wed Nov 22, 2017 3:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Awesome. I'll have to call it in. I doubt they will have much input, as you seem to well versed in their cam profiles and know the build better. I did not find the piston dish volumes listed on summit. I'm assuming the standard D dish, and not the round dish or the just the valve reliefs? Should I g...
by Wesman07
Wed Nov 22, 2017 11:26 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Yes. I will be building a second motor to keep the down time of my truck to a minimum. I don't like rushing motor builds.

I have about 250k and 150psi across the board on my current motor, so I should have an adequate amount of time.
by Wesman07
Wed Nov 22, 2017 10:09 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Ok. That makes sense. I will have to call them. The guy just replied back and said " yes you could do that". I order to deck the block to the correct height, I would have to assemble, measure the top of block to top of piston, disassemble, mill.... correct? Any other machining that should ...
by Wesman07
Tue Nov 21, 2017 11:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Will the cam advancement change between the 270 and 280 degree duration?

Given the motor specs, Would you lean towards one or the other?

I would assume that the 280 would be on the safer side of things but less bottom end.
by Wesman07
Tue Nov 21, 2017 10:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

What is the best way to advance the cam 4 degrees? A offset cam key with a cloyes adjustable get set?

Thank you for all of this by the way. It is the exact direction I wanted to go with this. Should be a great truck motor!
by Wesman07
Tue Nov 21, 2017 7:34 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I should just call them. I also have to find a good machine shop or engine builder.

Any idea what kind of power this would make? I'm guessing 175hp 290lbs
by Wesman07
Tue Nov 21, 2017 6:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I asked about your recommendation as well.

It looks to me that one was close to the crane 901 that we were trying to get away from.
by Wesman07
Tue Nov 21, 2017 11:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

?[/quote] If the cam has a longer advertised duration than the stock cam that will help with detonation Adjusting the base timing moves the entire timing curve. If you retard the base timing you will lose power. The plan was to use a higher octane pump gas (91 octane) to compensate for the higher co...
by Wesman07
Mon Nov 20, 2017 4:32 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

Very cool. I like the direction this is going. So hypertec Pistons set at a zero deck hight. 9.2:1 compression, and 91 octane. I'll gladly take your cam advice... I filled out the form on Howard's website to get their recommendation. Would this factory fuel system handle this? I remember reading the...
by Wesman07
Sun Nov 19, 2017 10:42 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Re: Setting up a stock efi motor to run on 91 octane

I'm looking for a reliable, simple and strong motor for my truck. The area I'm trying to improve is the highway cruse... 2500 down to 1800 rpm. I was considering the 260 degree crane cam, but I really like the characteristics of the factory cam set at zero degrees. Knowing that going to a smaller ca...
by Wesman07
Sun Nov 19, 2017 9:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Setting up a stock efi motor to run on 91 octane
Replies: 96
Views: 11930

Setting up a stock efi motor to run on 91 octane

What if you were to take a stock efi 300, and put flat top pistons in to raise the compression up to the 9.2 ish range? Or a level safe for 91 octane.

Would this have similar results to putting a smaller cam in that raises the dynamic compression?
by Wesman07
Fri Nov 03, 2017 2:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: After 350K+ I think I need to rebuild my Big Six. Current best budget build?
Replies: 12
Views: 2508

Re: After 350K+ I think I need to rebuild my Big Six. Current best budget build?

That would make sense. So higher lift would be more benifical than larger valves?
by Wesman07
Fri Nov 03, 2017 1:35 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 277
Views: 61222

Re: 300 I6 EFI performance upgrades

Uneven gasket material is the most common cause that I've heard of. Check the flatness of both mating services.

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