Supercharger options?

65wildstang

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I know this has been discussed before, and I've researched read alot of posts and internet sales adds. I'm going to upgrade superchargers. I currently still on stock eaton with 48k stock motor. Last winter upgraded k member and installed longtubes. Cars been tuned for smaller upper and it's time to turn it up. I have considered the TVS but thinking 2.9 or 3.4 whipple. I know fuel system will be needed and will be going with return setup. My goal is at least 700 rwhp if, more that'll be great. Really wanting the 3.4 for later upgrades. Thinking 2 tunes for 93 & e85. What I've read 21 psi is around max with stock internals. With the 3.4 am I limiting myself with stock engine. I've gotten into street car no prep at our local track and the bug bit me. I respect everyone heres opinions and would like some info. Thanks

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Soap

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If you are into no prep racing you need to put a turbo on the car so you can manage the power. The instant hit of a blower isn't going to do you any good.

--Joe
 

CobraBob

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65wildstang

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I thought about that, but plan on staying with blower. I will be driving the car occasionally back and forth to work. My tuner here does a lot of turbo builds also and has tried to talk me into going that way. I'm going to stay with a blower. Just concerned the 3.4 will to much for a stock engine in my car car?

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98 svt

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I thought about that, but plan on staying with blower. I will be driving the car occasionally back and forth to work. My tuner here does a lot of turbo builds also and has tried to talk me into going that way. I'm going to stay with a blower. Just concerned the 3.4 will to much for a stock engine in my car car?

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Driving it back and forth to work should be just fine with the turbo.
I vote turbo as well
 

cj428mach

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The stock engine will be fine with a 3.4 if you can feed it the proper fuel and keep boost levels up where they need to be. The problem will be the stock lower pulley or your crank if you go aftermarket pulley.

I think for all but the biggest of builds the 2.9l has proven it can make insane power.
 

MG0h3

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At sea level I think the TVS can max the engine. A guy here in El Paso at 4k feet is spinning the hell out of his and sees 21-22. If 700rwhp will make you happy I'd go that route; its proven and not very expensive.

I do think turbo is better and they pull like a mofo but def. take more work up front and ongoing if you don't do it right.
 

65wildstang

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I've also considered the 2.9 , but the 3.4 cost isn't much more. On this car. I want to stay blower. Have a built 97 that I've considered turbos. That's my delimma lol. I'm constantly back and fourth between them 3. On the 3.4 I'll be keeping the lower cage. I have the caged 4lb lower if I go tv's. Thanks

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c6zhombre

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The first question you have to answer is what's your budget? If you're only a pump gas eaton car right now, any of the blower swaps with 20+ psi of boost on E85 are going to be FANTASTICALLY more performance than you are experiencing right now.

Keep in mind, once you go past 21-22 psi and 700 wheel, you open up another threshold of parts that will most likely fail and have to be upgraded. So the 2.9 and 3.4 blower choices spun to the moon will make well past 700 wheel no problem.....you have to be prepared with the budget to fix the driveline carnage and reinforce the weak spots. Not saying this couldn't happen at 21 psi.....just the likelihood goes up exponentially spinning the big blowers hard.
 

65wildstang

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The first question you have to answer is what's your budget? If you're only a pump gas eaton car right now, any of the blower swaps with 20+ psi of boost on E85 are going to be FANTASTICALLY more performance than you are experiencing right now.

Keep in mind, once you go past 21-22 psi and 700 wheel, you open up another threshold of parts that will most likely fail and have to be upgraded. So the 2.9 and 3.4 blower choices spun to the moon will make well past 700 wheel no problem.....you have to be prepared with the budget to fix the driveline carnage and reinforce the weak spots. Not saying this couldn't happen at 21 psi.....just the likelihood goes up exponentially spinning the big blowers hard.
I have thought about those issues and will repair accordingly. My issues I'm trying to figure out are the 3 blowers and there efficiency on a stock motor for now. Thanks

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c6zhombre

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I have thought about those issues and will repair accordingly. My issues I'm trying to figure out are the 3 blowers and there efficiency on a stock motor for now. Thanks

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The 2.9 and 3.4 are not efficient at all sub 24psi.....so, to be in their efficiency range on E85 you're looking at 750+ rear wheel hp. So be prepared for the driveline and crank/pulley carnage.

Honestly...if you really want 750 and reliability just skip the 2.9 and 3.4 and go auto/turbo. It's amazing how many cans of worms get opened up trying to surpass the little 2.3 blowers on E85.....those units are HIGHLY efficient and Big Bang for bucks.
 

65wildstang

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The 2.9 and 3.4 are not efficient at all sub 24psi.....so, to be in their efficiency range on E85 you're looking at 750+ rear wheel hp. So be prepared for the driveline and crank/pulley carnage.

Honestly...if you really want 750 and reliability just skip the 2.9 and 3.4 and go auto/turbo. It's amazing how many cans of worms get opened up trying to surpass the little 2.3 blowers on E85.....those units are HIGHLY efficient and Big Bang for bucks.
I value your opinion, but I'm not even considering a turbo on this particular car. Thanks

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cj428mach

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I value your opinion, but I'm not even considering a turbo on this particular car. Thanks

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I agree with C6Zhombre that it appears that after you go bigger than a 2.3l the headaches really start to show up.

I think a stock caged lower with harder bushings will break, honestly I think thats harder on them than leaving soft bushing material in them. Some of the best caged lower failures were with harder bushing material rather than with softer.

Also what are your end goals? Malcolm with his TVS, cams, ported heads, and higher compression did 800rwhp with some ignition issues up top. He also said the TVS was way more fun in the midrange than even his 2.9l pullied for 27-30psi.
 

65wildstang

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I agree with C6Zhombre that it appears that after you go bigger than a 2.3l the headaches really start to show up.

I think a stock caged lower with harder bushings will break, honestly I think thats harder on them than leaving soft bushing material in them. Some of the best caged lower failures were with harder bushing material rather than with softer.

Also what are your end goals? Malcolm with his TVS, cams, ported heads, and higher compression did 800rwhp with some ignition issues up top. He also said the TVS was way more fun in the midrange than even his 2.9l pullied for 27-30psi.
This is what I'm wanting to here about different blower options and data. Really my end goals are 700-800 rwhp with this current car. Thanks

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MG0h3

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3.4l will chew up a stock caged lower. Just look at how many stockers Malcolm chewed up with his 2.9.

I'm still blown away by that. I know he had a higher compression motor for a bit, but a lot of other guys too. Im at like 16k on mine and no issues and I do not baby mine at all.
 

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