[EDFHOBBIES]

I have seen the vette forums posting picking up a 100 hp just by swapping blowers to like the 2.3L edelbrocks and maggies vs over spinning the 1.7L.

We all know the stock fuel system is the hold back... and the goal is lower IATs.

I noticed on my LS3 camaro I started with a eforce blower, ID850s, Cam, Headers, exhaust, and CAI the most I could get on 93 was about 620whp with about 14 psi.

Then made switch to a AGP TT on the same components minus the CAI and headers I made 706 with 8 psi..

With that theory the 2.9L should be good to what 650 or 670 rwhp? and spin less hard with lower IATs even though 620 seems to be the max the fuel can handle with the 1.7L blower?

I realize the cheaper route is the smaller pulleys for the 1.7L but will the gains be better with the whipple or larger blowers with the same fuel system moving more air with less heat vs over spinning the small blower like it was on the LS3s?

Also any Hp numbers for the following?

Stock Zl1 about 550 to 560 rwhp M6 on 93
Stock Zl1 with whipple and tune M6 only on 93?
Stock Zl1 with Maggie and tune?
Stock Zl1 with Eforce and tune (vette info)?

I'm kinda tired of the Headers and cam route I'd like to be stealthy faster now.

[BMWM.D.]

Not a ZL1, but the gains should be very similar on a Z06: https://www.corvetteforum.com/forums...on-my-z06.html

For what it's worth, I've never been an E-Force fan. The runner design wasn't great, and the IATs were high. At least based on what I saw on LS3 Corvettes. The Magnuson Heartbeat was a much better blower, and has made some big numbers on different applications. It probably isn't going to have the maximum potential of a 2.9 liter Whipple, but I think it's an excellent choice depending on power goals.

I've seen a number of guys get near 700 WHP with the stock 1.7 liter blower. Intake, headers, pulleys, and some extra octane (meth or E85) are needed though. I think either way, the octane is needed if you want to add ~150 WHP over stock. At least with the crap 91 octane we have out here.

[KingLT1]

Yup...higher Octane will be needed regardless of supercharger choice at that power level.

[BlaqWhole]

Looking at the price and labor of doing a pulley or porting the stock blower plus adding a tune in...I think it is much better to just do a Whipple. Because the way I see it, if you overspin that blower (or even just spin it more) you ARE adding heat to your setup. And if you aren't happy with the performance you get out of it, well you just wasted money on porting/pulleying/tuning the stock blower just to go a different route. It is much better to just go with a Whipple and then if that isn't enough you can add a cam, ported heads, etc and the blower will still be of good use. That is the route I'm going. My next mod will be LTs and tune and then after that will come a Whipple.

[EDFHOBBIES]

The eforce on the ls3 did sux.. but on my SS I have not felt any loss and the dyno didn't show any 3 runs all at 551 w eforce can tune hot mustang dyno . If that was my ls3 there would of been 60 hp difference between 1st run and last run. Now the ss has cai, headers, and Atak system it bumped it up 30 hp.

I'm not doing exhaust my SS is over the top I kind of like to hear the wHine of the 1.7 for now.

Was thinking of the whipple and the lingenfelter pump that does 30% more than the lt4 stuff with out the doing a cam.. if I did the cam it ne similar specs to the LT4 cam w the lobe.

If the whipple flows more air with less heat it probably won't require as much octane as you think.

The question is the whipple adds 125 hp over the zl1 1.7 is that becasue it's out of fuel or because the octane..

[scooter k]

I'm contemplating this same stuff. Why not a procharger?

[Joe's_cool_1le]

Originally Posted by scooter k

I'm contemplating this same stuff. Why not a procharger?

Easier to replace a PD with another PD and cheaper from what I understand.

[bucknut2006]

Something to consider is that the Whipple will be perfectly fine with the ATI replacement pulley/balancer. Besides a tune and a cheaper upper pulley, you can always try out the stock blower and go from there.

[TheElementalCashew]

Originally Posted by bucknut2006

Something to consider is that the Whipple will be perfectly fine with the ATI replacement pulley/balancer. Besides a tune and a cheaper upper pulley, you can always try out the stock blower and go from there.

Yeah, I'm starting with the lower pulley. If it runs to hot with E85 I'll start looking into a blower upgrade.

[EDFHOBBIES]

Originally Posted by TheElementalCashew

Yeah, I'm starting with the lower pulley. If it runs to hot with E85 I'll start looking into a blower upgrade.

That's about 610 hp to wheels.. if no cam is done to increase fuel demand with the parts below..

By the time you do headers and exhaust 2k, 500 CAI, pulley 50 Daves flex kit 400, and tune 650..(labor to install 1000?)

Isnt that below the 125 rwhp gains whipple wit there CAN tune.. for 5900 but I bet you could get it for 5k on sale blk Friday.

This is what I'm trying to figure am I missing something?

[TheElementalCashew]

Originally Posted by EDFHOBBIES

That's about 610 hp to wheels.. if no cam is done to increase fuel demand with the parts below..



By the time you do headers and exhaust 2k, 500 CAI, pulley 50 Daves flex kit 400, and tune 650..(labor to install 1000?)



Isnt that below the 125 rwhp gains whipple wit there CAN tune.. for 5900 but I bet you could get it for 5k on sale blk Friday.



This is what I'm trying to figure am I missing something?

Based on a local guy's similar mods, I'm expecting to make upper 600s on E85 with the mods listed in my signature. But of course I won't know for sure until after it's all done next week.


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[EDFHOBBIES]

Powerfab is a very very good shop this is my wife running a ZL1 on e85 with kooks, Rotofab, smaller pulley, and a tune it made between 610 and 620 probably made same on 93 remember it takes 30% more fuel which is not good since fuel system is all ready weak.

It barely pulls my SS with Eforce and headers. He was maxed out he know has a cam and is in the 730 range

No Meth on either setups

https://youtu.be/bruKdOcKHAc

[Can'tHave2MuchHP]

18% OD, E85, Intake, Headers & Tune should be 650-675 RWHP. Even more if porting is involved. I am not sure how you got 610-620 on a Pulley, E85, intake, Headers and tune. That seems to point to high heat, low reading dyno (Mustang), or (Unlikely) awful tuning.

A blower swap is obviously the answer for more power out of the LT4. IMO the route I'd go would be ProCharger if you wanted BIG power and a Whipple for everything else. I believe ZL1 Tommy is basically showing the outer limits of the Whipple on the LT4 with Heads/Cam/E85/Meth/Headers and he's running 922 RWHP. A Whipple on an otherwise stock engine is probably worth 100 RWHP I'd bet. Spin it a bit more, maybe 150 RWHP.

Vengeance has turned out Z06s (Lt4) with ProCharger conversion running anywhere from 800 RWHP on otherwise stock engines to 1100 RWHP on full builds. I'm sure the only thing holding them back there was the internals of the LT4.

I'll give a very rough outline of what the options are:
600-700 RWHP - Stock blower, just turn it up a little bit
700-800 RWHP - Stock blower and Heads/Cam/FBO OR Blower Swap on stock engine
800-900 RWHP - Stock blower Heads/Cam/FBO/Nitrous or Blower Swap on Heads/Cam Engine
900-1000 RWHP - Stock Blower Heads/Cam/FBO/200 Shot or Blower swap on Heads/Cam with more E85/Meth etc.
1000+ RWHP - ProCharger (Or other large centri style blower) or Turbos.

You're really up against an octane wall with anything over the 600-700 HP range. E85 helps. Meth helps. People who run away from using either end up limited at the mid 600 wheel range. What you'll notice is that the amount of power a blower swap will add (Lets say 100 RWHP) is the same number maintained across the board as you add mods to either setup.

[EDFHOBBIES]

610 to 620 is all the stock LT4 fuel system can do on e85 with out messing with cam for the fuel lobe or using some type of spacer under the cap ect.... if you break into the motor your spending another 4k to 5k for a cam swap to run the pump.

I don't want to run meth I have 4 different friends that used jrods, kpracing, hpmotors, and g force all have had some tiype of falure running meth and those shop are better tuners than HHP. When I first moved to houston 5 years ago all I heard was engines blowing by them. It looks like they are a lot better shop now. I trust powerfab He has my friends Zl1 making 770 on e85 no meth with cam swap..

I don't want to be meth dependable or want to break in to the motor.. these direct injection motors are a pain all the gaskets are silicon now and requires more labor than my old Ls3 to swap a cam.

If I'm at 550 to 560 rwhp not sure it's not broken in yet.. and I can add a true 125 rwhp as claimed by whipple I think that's enough power for now..

Every whipple I see posted are all modded I'm looking for the whipple video with stock manifolds and air box and there CAN tune that makes 675 or 680 just bolting the blower on and there tune.