Compression & Power Adders

Old Skooler · May 11, 2012

I had some issues in the beginning because the guy who put the motor together was an idiot, that being said its been running great. I only use Sunoco 93 gas and Hess as a close second. My issue is the edlebrock heads there ported but I know there's more power in the motor with a set of 185's or in my case 205's this thing will see over 400 rwhp. IMO!!! If I were you I'd do a little work to the heads before you put them on but I would reco the higher compression. After this thread I'm going to get 150 shot after the head work.

Ive had a lot of set ups over the years and this one feels like it has the most potential.

Could anybody answer the difference in power between my set up w/ lower compression? Is it a substantial difference?

Old Skooler · May 11, 2012

Also gas mileage isn't that bad once everything was tuned properly.

65ShelbyClone · May 12, 2012

madmike1157 said:
Ohhh 750 DP, NOT 750 HP. That's much better.

You EFI guys are funny. The Holley 750HP is a DP.

90lxcoupe said:
If you get a batch of e85 that is say e70, and tune the car on that you will have a very safe tune up.

2.) Also, you said plenty of guys run 11:1 with boost, thats true, but not a whole lot of windor guys do it. It takes a very efficient chamber design to pull that off. Which is why the new 5.0's make it look easy

1.) Tuning it fuel-wise for E70 is going to result in a leaner mixture with full E85. It really is a PITA to tune for a fuel with octane and stoich AFRs that vary as much as pump E85. The solution, short of a flex fuel retrofit and EFI, is to pad the tune a lot or blend down your own fuel to an ethanol percentage at or below the lowest coming out of local pumps.

2.) Since pushrod 5.0s don't have all the features that help DOHC 5.0s manage that combination, it will come down to timing and octane. Lots of octane...

90lxcoupe · May 12, 2012

65ShelbyClone said:
Tuning it fuel-wise for E70 is going to result in a leaner mixture with full E85.

yes i had that backwards, but if you got a batch that you made e-85 or even e 90 you would have a safe tune no matter what, and still have the benefit of added octane

CarMichael Angelo · May 12, 2012

65ShelbyClone said:
You EFI guys are funny. The Holley 750HP is a DP.

I'm an EFI guy???? Now that's funny.

#1. If you're gonna assume something, be sure the answer to that assumption isn't in the thread you're commenting on.
#2. Had you read my previous reply, you'd see that I thought he was talking about Horse Power, not confusing a suffix on a Holley competition carburetor.
#3. Lastly, before you lump somebody in w/ a group w/o knowing the who they are, or what they have, you might wanna touch on their profile and see what it says. My profile info doesn't go 3 words before the words Carbureted 4.6 show up.

"You EFI guys"............Why I oughtta.................

65ShelbyClone · May 12, 2012

Do you always get that offended when someone pokes fun at you? That's just...wow.

90lxcoupe said:
if you got a batch that you made e-85 or even e 90 you would have a safe tune no matter what, and still have the benefit of added octane

That's true. I suppose it depends on how much effort someone wants to put into mixing their own fuel. Raising the ethanol content means adding dry, 100% ethanol, which I figured wasn't as easy to get as premium pump gas or even pump 100(which presumably won't lower the octane of E70). Denatured alcohol might be suitable. It has a lot of methanol in it, though, which also plays with the AFR. Here it costs per gallon more than twice what VP 100 does.

NIKwoaC · May 12, 2012

View attachment 149879

90lxcoupe · May 12, 2012

that sh it is no joke, made jungle juice with that, rum, and three different vodkas in it. Made 5 galons and after one cup you were feelin loose lol

srtthis · May 13, 2012

It's good for blowing fireballs also...

NIKwoaC · May 13, 2012

The 190 proof stuff is actually illegal in a few states, lol.

65ShelbyClone · May 13, 2012

I think CA is one of those states. Everything is illegal here.

190 proof is 95% alcohol with the balance being water because Everclear is, AFAIK, made by conventional distillation which cannot yield anything higher than ~95-96%. The remaining 4-5% H2O has to be removed by other means like a molecular sieve or desiccant.

MikeH686 · May 13, 2012

BadBlue68 if your gonna stroke it, why not just go to a 347 the kits arent that much more expensive?

90lxcoupe · May 13, 2012

Its illegal here in mass too, but im 20 minutes from the CT line, so i just got it there.

From what ive read about E-85 you can add methanol to it, to me, it seems worth the hassle, testing it isnt rocket science and around here there is nowhere to get 100 octane pump fuel. C16 is 18 bucks a galon these days. Phuck that noise.

I just wish we had more e85 stations around here. There are a few DSM guys running it and they have great luck with it.

srtthis · May 14, 2012

90lxcoupe said:
Its illegal here in mass too, but im 20 minutes from the CT line, so i just got it there.

From what ive read about E-85 you can add methanol to it, to me, it seems worth the hassle, testing it isnt rocket science and around here there is nowhere to get 100 octane pump fuel. C16 is 18 bucks a galon these days. Phuck that noise.

I just wish we had more e85 stations around here. There are a few DSM guys running it and they have great luck with it.

might want to look into shell URT... 116oct unleaded. around 15-16 a gallon

but if you REALLY want to get fancy you can blend your own... blend fuel X with M1 ive heard of some very nasty race gas with a blend of C16 and M1 around a 50/50 mix

Compression & Power Adders

Old Skooler

Old Skooler

65ShelbyClone

90lxcoupe

CarMichael Angelo

my rearend will smell so minty fresh,

65ShelbyClone

NIKwoaC

中國製造

90lxcoupe

srtthis

the guy doing it does every local racers rear end

NIKwoaC

中國製造

65ShelbyClone

MikeH686

Mine is only two inches though.

90lxcoupe

srtthis

the guy doing it does every local racers rear end

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Compression & Power Adders

my rearend will smell so minty fresh,

中國製造

the guy doing it does every local racers rear end

中國製造

Mine is only two inches though.

the guy doing it does every local racers rear end

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