Ford Mustang Forums banner

1 - 6 of 6 Posts

·
Registered
Joined
·
1,021 Posts
Discussion Starter #1
GT 40 upper and lower. non egr ported to match my dugan performance edelbrock performer rpm ported heads, im going naturally aspirated what size tb should i go with, i was hinking 70mm
 

·
Registered
Joined
·
1,118 Posts
I would say a 65mm throttle body would work just fine. You can always go with the 70mm also not much of a difference.
 

·
Registered
Joined
·
432 Posts
I ran a 65mm TB on my GT-40 intake then swapped to a 70mm at the track. On back to back runs, with the identical 60ft time, I ran .002 and .01 mph faster w/ the 70mm :rolleyes:

Either one should work just fine.

Good Luck

Brian
 

·
Registered
Joined
·
1,363 Posts
65 should be good, drop some juice on it or blow it, id do a 70
 

·
Registered
Joined
·
1,021 Posts
Discussion Starter #5 (Edited)
im going to do a 70, for the future setup with 24# injectors, and a matching MAF, maybe even larger then the e303, im ganna need high duration right??? both of the guys above me have some fast 5.0s, what cam would you recommend? maybe even some dry ZEX
 

·
Registered
Joined
·
2,056 Posts
Match the TB to whatever size the GT40 intake opening is (70 I think?) and get a larger MAF than MAF something like C&L 76mm.
 
1 - 6 of 6 Posts
Top