My car with a basic blow through turbo.









t-70 turbo, modified power stroke intercooler, modified holley 750 double pumper, s-10 headers, spohn sub frame, 8 point roll cage, tranny mount with safety loop, adjustable troque bar, lower control arm relocation kit, sumped and baffled tank, walbro 255 pump, mallory hyfire vi. built chevy 5.7 with 202 heads ported, torker intake, 15 cc dished forged pistons, th350 built with kevlar bands manual shift.

 

Nice
Have any ET's yet?
---Bill.

 

 

the fastest its been down the track is 10.7 @ 123mph

Dyno'd with DYNOCOM:

9 psi of boost
MAX. HP=(389.9HP) @ 4635 rpm
Av. HP=(290.0HP)
MAX Torque=(472.4 ft-lbs) @ 4223 rpm
Av. Torque=(395.1ft-lbs)


14 psi of boost
MAX. HP=(492.9HP) @ 4468
Av. HP=(299.5HP)
MAX Torque=(563.3ft=lbs) @ 4752 rpm
Av. Torque=(421.1ft-lbs)

 

what rpm

 

i edited with the rpm's sorry pretty much the the boost don't kick in or pick up about 4k rpm my rev limiter is set at 5k. my turbo is alil too big.

 

what turbine a/r do you have?

 

Master Power T-70 .70 compressor/.96 turbine

http://www.masterpower.com.br/index.htm

 

Er, um. . . a little too small.

Looks like a nice low-buck setup. What cam is in it?

Mike

 

stock cam stock 350 3" inch exhaust from turbo and dumps on the side no muffler. maybe lack of back pressure.

 

Get a cam!

 

don't need no back pressure after the turbo

I HERD of folks going in the 9s with that turbo

 

Yea, with a turbo, you want as little backpressure as you can get, especially AFTER the turbo. Zero is best. The turbo causes alot of backpressure. At 14 psi boost, I bet you're at 35 psi exhaust pressure.

Ditch the stock cam. Get you something around 220 on the intake.

Mike

 

what brand should i go for the cam with the 220 intake side?

 

I'm assuming you're going to stay hydraulic flat-tappet. In that case, any of these would make a good choice:

Lunati voo-doo 60102 219/227-112
Comp extreme 12-238-2 218/224-110
Comp extreme 12-242-2 224/230-110

People will tell you all day long that you need a 114 LSA for a turbo and all I can say is that they are wrong and it's been proven. With the little MPT70 on 355 cid, you need to cam it to make power before you run out of turbo up top. The narrower LSA's and small duration will keep the rpm range down and the turbo happy. You'll be surprised how much power you'll gain with one of these cams.

Just be sure you're running the recommended spring pressure. Alot of these aggressive ramp cams require 110+ lb seat pressure.

Mike