What size TB for MY H/C combo?
Thread Starter
Launching!
Joined: Nov 2005
Posts: 276
Likes: 2
From: Clinton Twp, MI
What size TB for MY H/C combo? 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?
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?
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 $$ you could save and still see some nice gains.
Launching!
Joined: Feb 2008
Posts: 232
Likes: 0
From: fenton, MO
combo if you wanna go with some power but save some money you can also do the LS2 intake which is 90mm and go with a 90mm TB both ported and the numbers show better flow and you can save some $$$$ 
