Low 12 high 11 sec intakes

[exgmguy]

I tested the difference between a 65mm and 70mm throttle bodies at the track.

I saw no difference at all on my car. It ran exactly the same.

I had a pretty mild combo before the blower,

302
mild 1262'd TFS heads
E-303/1.72's
Holley intake
equal shorties
H/full cat back
65 and 70 mm t.b's
30 lb injectors
Pro-m 75
pulleys
3.73's
T-5
28" ET Streets

I would trap around 110 with my GT-40 with a ported lower, and switching to the Holley gave me 112-113 mph trap speeds.