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Nov 30, 2006 | 08:36 AM

#16

RealQuick

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Joined: Feb 2002

Posts: 5,645

From: Bridgewater, MA

Quote:

Originally Posted by 1997blackz28

I too am new to v8 turbo setups but i have had quite a bit of experience with v6 turbo cars. at what rpm will 383 motor spool a t88? and is 12 - 15 psi in the power band of that turbo? i just ask because in my experience with smaller motors (i know that makes a big difference in spool and all) a t88 has to spin pretty high to hit full boost, and 15 psi would barely spin the compressor wheel. this is all on a 3.0L supra motor though so i have no idea how it would react on a much bigger 383. im nt saying your set up wont work or anything basically just trying to educate myself a bit. thanks.

The T88 should hit full spool somewhere between 4000-4500rpm (I have a 6.2L engine- 383ci). If you check out the air comsumption requirement of a 383 at 15psi @ 6000rpm (http://www.forcedinductions.com/consumption383.htm) you can see that it is aproximately 75lbs/min. When you look at the compressor map for a T88 (http://www.forcedinductions.com/Tseries.htm) you can see that I would be in the 80% eficiency range! Thats the best that turbo has to offer, so it is ideal. A T76 is almost off the map (65% efficiency). Dont get me wrong, the T76 will stil make a buttload of power, but I just wanted to show the people that were curious about efficiency.

There is a guy near me that has a T88 on his 408ci LSX setup and he made 820rwhp @ 14psi on 93 octane

He is my inspiration.

He also ran 10.5 @ 142mph with 12.5psi with a M6 tranny spinning most of he way down the track

. have seen the car in person many times and it sounds stock. He has a little 218/228 cam in there now and will be swapping to probably a 230/230 and looking to pickup 100rwhp from the cam swap.