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Discussion Starter #1 (Edited)
We just made 571HP and 565Ft lbs of Torque on 30 psi tapering back to 29. The impressive thing is that it was done on Our AMS GT35R Turbo Kit for the SRT-4 and all on an AFC!!
SRT4chicago said:
Its a built motor with Wiseco Pistons, Eagle rods, Crane Cams, Ported Head, SI vlaves, Fidanza Gears, Denso 750CC injectors that are maxed out at this point. A complete AMS fuel system using twin walbro inline pumps. The turbo Kit consists of A full equal length 304 1/8 in wall tubular exhaust manifold. Tubular O2 Housing with Tial 38mm wastegate. 3" Downpipe, 4" intake pipe and of course a GT35R turbo. Fuel is again controlled by an AFC. NO NITROUS
http://media.ams-evo8.com/573srt4dyno.wmv

A little update, today we had an SRT4 dyno day at our shop and we strapped the beast down. boost went up by 1/2 a lb and it layed down 587whp and 579 ft-lbs of torque!

The Head is ported with upgraded spings, retainers and valves. the motor is bored .02 over as well as the Block Being O-Ringed. Pretty standard motor build for us here at AMS.

Two 255 inline walbros will support WELL over 700 whp, we've proved it many times. Our obsticle at this point is the car is maxing out the 780s, even at decently high base fuel pressure. We will probibly keep the car in its current tune untill a viable ECU solution is released. At that point larger injectors, timing control, and more rpm will make this thing unreal. The 6200 rpm rev limiter is absolutly killing the car at this point. Im used to GT35R cars revving to 7500 at the least.
http://www.srtforums.com/forums/sho...32&page=1&pp=15
 

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Well.. something to be said for the persistant right. That is a lot of power on such a vehicle. Post street perfomance numbers when you've got them :)
 

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A hotrod Neon! :lol:
 

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In the July issue of Motor Trend there is a short article (pgs 166-168) on the GM Phase 5 (meaning 500+ hp) Ecotec engine, built from parts from their new Sport Compact Performance Build Book. The article says that the Cobalt owns nearly every sport-compact record including a 6.9 sec 1/4 mile blast. Lets put some of these pieces in our Skys...
 

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Holy crap.. 6.9 to 1/4 mile. I'm all for making mods.. I'm just going to wait until it's out of warranty to do it..
 
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