4.0L Whipple on pump gas?

Just wondering if the 4.0L Whipple is able to be run on pump gas? Perhaps with the largest upper pulley possible?

I would like to have a pump gas/race gas setup for my built motor that is coming in the future.

Thanks,

Able to but pointless. You can't even max out a 2.3 Whipple or TVS on pump gas.

With E85 you can push the stock motor to its limits with either of the 2.3l units.


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MG0h3 said:

Able to but pointless. You can't even max out a 2.3 Whipple or TVS on pump gas.

With E85 you can push the stock motor to its limits with either of the 2.3l units.


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Okay, I just wanted to make sure it is doable.
I am not expecting to really push the blower too hard when its on pump gas, that is for race gas when I go to the track. Not sure how pointless that really is.

Even on race gas I think a smaller blower is better.


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MG0h3 said:

Even on race gas I think a smaller blower is better.


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So more like a 3.4?
I already have a TVS but I don't want to leave lots of power on the table for my built motor.... I feel like I should've bought a whipple in the first place. Idk if its worth selling the TVS and getting TwinScrew... probably not.

Pretty sure some guys with the tvs are running 8s. It'll be better than even a 3.4 on the street. Hell Malcom dumped a 2.9 crusher for a tvs and lost some top end but likes the low/mid better. He's on a built motor, ported heads, cams etc.

If I ever wanted more air moving than my 2.9 can push I'd go turbo.

I just can't see having a 3.4 or 4l that will ever see pump gas or the street. Maybe a dedicated race car, but then I'd go turbo without a second thought.


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MG0h3 said:

Pretty sure some guys with the tvs are running 8s. It'll be better than even a 3.4 on the street. Hell Malcom dumped a 2.9 crusher for a tvs and lost some top end but likes the low/mid better. He's on a built motor, ported heads, cams etc.

If I ever wanted more air moving than my 2.9 can push I'd go turbo.

I just can't see having a 3.4 or 4l that will ever see pump gas or the street. Maybe a dedicated race car, but then I'd go turbo without a second thought.

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I agree with this. Id say the biggest blower id go to is a 2.9l. Gabe made 1000rwhp on his terminator 5.0 stroker, thats plenty good for me lol.

It would be pointless, as you'd have to keep it very tame on pump, and with a PD blower you have to change pulleys for more boost/power, and changing that shit at the track is not fun....run corn and be done with it

Don't forget about the lower pulley issues with running large blowers!

Don't do it. You would be better off with a 2.9L as well as 4.0 your going to be at risk of breaking your crank pulley.


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Sounds like overkill. Like mentioned above, guys have run 9's on little 2.3's with the right setup.

On the street you'd likely get eaten up by a little 2.3 on corn against a 4.0 on pump gas.

Track only car I would do the 4.0L if I wanted to stay PD. but for anything that will see the street, 2.9L would be the largest and even then on pump it may not be that fun. Although depending on your motor it may be ok. Compression increase? Cams? Head work? All that could net you more power on pump gas that may still keep it fun on the street.

Khan said:

Don't forget about the lower pulley issues with running large blowers!

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Not to get off track, but can you share more details?

Thanks everyone. Considering I have the TVs already it's probably not worth it

I guess I can always spray a shot

I've ran a 2.3 Whipple on pump gas 18psi and a 3.4 Whipple on pump gas 18psi and at the track the 3.4 Whipple was 7mph faster. Don't let these people who've never ran either blower influence your decision. Some of these same people told me the same thing. I went with a 3.4 Whipple and the drive ability was no different than an eaton or Whipple 2.3.

Alpha 06.....rwhp? et? mph? stick or auto? thx

Who needs a 3+ litre blower???

I'd push that tvs and see what it can do on e85 with a built motor. Then if you're still not happy, upgrade to a bigger blower. But as proven and shown, these little TVS's put in work!


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Op, you wont even enjoy the 2.9 whipple on pump gas. Is it doable, sure. Buts its on that fine line. Your going to complain about loosing low end tq and you are not taking advantage of that blower. Ill bet a tvs on 17lbs will beat a 17lb 2.9 whipple on pump gas. The only blowers I would run on pump gas on a STOCK motor would be the ported eaton, 2.3 tvs, 2.3 whipple, 2.6 kb, maybe the 2.8H kb. The 2.6 and 2.8kb I would run 19lbs. But I would stick with the 2.3 tvs.

pump gas and 4.0 whipple dont belong in the same sentence. Thats just nonsense. You need e85, mega boost, built motor, and you will need a custom crank setup bc you will be snapping stuff left and right and the 4.0 will get hot as hell.

If the blowers mentioned by the other members, what they recommended, and what I recommend arent enough, you then need to go turbo. After a 2.9 whipple, go turbo. I spoke to lots of west coast tuners who post on here and east coast tuners, if there customers want more power and they have a 2.9 whipple, they go turbo.