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exgmguy · 06-26-2002, 11:51 PM

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.

06-26-2002, 11:51 PM	#23
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	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. __________________ 1988 Mustang GT stock bottom 302, C4 10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN 1989 Mustang notchback Warmed up 306 with a Procharger.