talking to a local supra buddy, he has a custom, mostly home built single turbo set up on his 95 supra and i have been picking his brain a little. check out what he had to say about intercoolers. by the way he is dynoing somewhere in the high 600's on a mustang dyno.

"I wouldn't worry about the intercooler. Just get a big enough air to air to support the turbo you want to run. A Spearco 3.5"Dx13.04"Wx24"H #2-205 would be perfect. I have a similar sized IC on the Supra, and it is very efficent. At Scribner on Sunday my last run was at 11:20am the outside temp was 87 degrees. My IAT's during the run ranged from 90 degrees at the starting line to 120 degrees at the finish line running 26psi. I was running within 1 mph of last time's trap speeds and my IAT's were 60 degrees then. The Air to Air definitely does it's job."

what i find amazing about that is his intake air temps with 26lbs of boost on a 87deg day were only 120deg!! is anyone else amazed by this? i had no idea an intercooler could cool that well. this really makes me wonder if more displacement would be worth the money. if your IAT's are that cool couldn't you just run more boost rather than a stroker? i have always dreamed of a forged everything 408 with high boost but now am wondering if i could skip the crank and just go 370cu and a stock crank with really high boost. is anyone breaking stock cranks?

another question, compare a 14psi 408 to a 18psi 370. if the iat temps are only a few deg hotter on the 370 and both motors make the same hp what positives would there be to a 408 other than a stronger crank. would the 408 handle less octane gas? would the 408 see lower cylinder presure or cooler exhaust temps? would the 408 be less likely to lift a head or spit out a head gasket?

thinking the 408 would have more low end and spool the turbos quicker but not even sure about that.

 

A FMIC almost that size(cubic inch wise) will fit but, the mounting bar for the hood mount latch will have to be modified a little. I'm going to go ahead and make a prototype(wood) up and see how it fits. Actually a bigger one may fit with some work on the lower radiator support.

The 408 and 370 at those boost levels will make almost identical power, probably somewhere close to 900flywheel hp. The stock crank is plenty strong as Harlan and countless nitrous guys have shown. They seem to be standing up to 700+rwhp cars fine.

The only advantage to the 408 would be the lower boost level. Exactly how boost/octane/cr work together I don't really know alot about though.

Air to Air intercoolers are fine and do a good job. They just need to be in a good stream of air to work. The only advantage a air to water has is that you can put ice water in there at the track plus you get a more constant charge temp throughout the run.

Did you order those big injectors yet? Racetronix finally got them in stock, they were out for a LONG time.

PS - Go with a BIG single and put a stall in that sucker. That way you won't have to buy twice the hardware(for each turbo) Actually you could even use the stall size to control how boost came in with big 4 bolt T88

 

can you get a t88 with provisions for an air filter, i would think so but the only ones that big that i have seen seem to be designed for no air filter.

i wont be ordering any parts for awhile, i have a few house projects that need to be finished, wont stop me from dreaming and planing.

 

Now that you say that I don't think I've ever seen a filter on a big turbo. I don't see why you couldn't put one on though. It might require a couple of big filters so the turbo can suck in all that air, ~1300cfm at 900hp.

You dreaming and planning is kinda scary. :p

PS - Don't let the house mods eat into your truck money.