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Originally posted by st5150:
Nice combo, but the TB, MAF and injectors are an over kill for this naturally asperated combo.

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That is just my combo but it is a 427 not a 408, w/ n2o, and the cam is just a stock '95 s-351. Thanks for the compliment!

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2001.5 Audi S4

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Originally posted by st5150:
The exhaust ports on those AFR's will respond nicely to the nitrous. You know that nitrous "makes" its own air in the combustion chamber so your big intake manifold, TB and MAF will show marginal gains since the extra "air" won't be flowing past them like it would be on a boosted car? I don't know about running a Saleen S351 cam in that thing though

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Well the n2o is on the car as it is and I'm not going to take it off and I have yet to buy the MAF but I wil probably go 92mm instead of 80, I don't believe the MAF and TB are overkill, and it is not like the car is set up for nitrous, it is just there. I could always get crazy and throw a supercharger putting out 14psi on a 10.0:1 compression engine and make 775hp

Oh, and the cam is just one that is sitting in my garage so I am going to see how that one works out on the motor first.

[ January 09, 2003, 05:12 PM: Message edited by: 7.0L ]

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2001.5 Audi S4

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Originally posted by 7.0L:
How about a 408(or 427), AFR 205's, EFI Spyder intake, 90mm TB, 92mm MAF, 50lb inj........

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400+ cube motors can make good use of 300 cfm heads

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Originally posted by SIR Paint Job w/ '84 Tercel on MTBE:
is it a 4.125 bore 427 or just the 4.170 stroke 427?

My combo is a 408, TFS 205s, TFS intake, 75 mm tb, NO MAF, 15-18 lbs of boost and 50 lb injectors. My injectors might be on the small side for my combo but i think for your set up 50 lbers might be a bit much unless you have a dry kit and an aftermarket computer which added more fuel through the injectors (which it doesn't sound like you have). even 42 might be too much.

also how big is the dish in your piston to bring it back down to 10:1?

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It is the 4.170 stroke. And as for the injectors, oh well, I already bought them, if they are too big, I guess I'll have to buy a supercharger

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2001.5 Audi S4

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Originally posted by wookdawg:
An aftermarket EFI system...interesting thought. I guess after buying a tweecer, getting it tuned, and buying all the MAF stuff I'd be in the same price range. Anybody use an aftermarket EFI setup with a blower or turbos?

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me, jeff s, trbo50, yellow67stang (nitrous, no boost), and probably some others that i forgot. Jeff S is the only lame-o without a stroked windsor.

I think I'm the only one with an accel DFI computer, i think the others all have a FAST computer, trbo50 might have a Motec.

DFI ($1,200 from summit) is cheaper than FAST. I bought it because I just wanted something to put on my car that would work and Accel has a list of people that they have personally trained to tune their computers. (the list is on their website www.mrgasket.com)
If you're running a blower/turbo then you'll need to buy a 2 bar or 3 bar MAP sensor ($50) depending on how much boost you plan on running. Other than that, everything else is in the kit.
They are tuned with a laptop (not included) so you never need to buy new chips and they have cool ass data loggers so when you beat your friends while only at half throttle, you can prove it.
The big negative about Speed Density instead of Mass Air is that any engine combo chance usually requires some tweeking of the computer.

An aftermarket computer would be definitly more expensive.