Droptoplt1ta

I want to know what SIZE TB I should run with the Heads and Cam combo I have below:

Stage 2 CNC ported LS1 heads with these specs:
Combustion Chamber: 67cc
Intake Runner: 220cc
Exhaust Runner: 67cc
Intake Valve: 2.02"
Exhaust Valve: 1.57"
Max. Valve Spring Lift: 0.650"
Spring Pressure Closed: 135 lbs. @ 1.800"
Spring Pressure Open: 375 lbs. @ 1.090"
Retainer Material: Titanium
Valve Seal Material: Viton
Valve Guide Material: Manganese Bronze
Valve Job: 5-angle

Cam Specs are:

227/227 640/640 114


Would a 90mm benefit me?

teke184

iTrader: (5)

well the ls6 intake is only 75mm wide...so not really.

you would probably see good gains with a FAST 92/92

SS1875

iTrader: (34)

Ported Stock TB and a Fast 78mm Intake would do nicely for you. The Fast 90 /90 or the 92/92 will do better on a bigger cube motor. Think of the $$ you could save and still see some nice gains.

5.slow99

if you wanna go with some power but save some money you can also do the LS2 intake which is 90mm and go with a 90mm TB both ported and the numbers show better flow and you can save some $$$$

lemons12

iTrader: (71)

what rpm do you make peak power at?