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PEPE · 07-17-2003, 12:29 AM

Hi guys I'am new in this site I have a question maybe you guys can help me.

My car is a 1993 Mustang 5.0 with a 306 Stroker with trickflow stage III heads, solid lifters & cam (565 intake, 580 exhaust) 10:1 compresion 75 MAF. 30lbs injectors & holley system max II Inatke manifold. (150 Shot N2O)

Ok, my question is: should I use a 70 mm Trottle body or 75mm?

Thanks to everybody, this is the best site on the internet!!

Coupe50h · 07-17-2003, 03:14 AM

firs tof all, a 306 is not a stroker, the cylinders are just bored .30.

now for your question, being you have solid lifters, and that size cam, i doubt you drive it everyday, i would go with a 75 mm tb, but maybe go to a 77-80mm maf, also, the holley intake might need porting to match a 75, i could be wrong though.

either way, that thing sounds wicked.

bottlebaby91 · 07-18-2003, 01:07 AM

70mm is plenty big. I have seen dyno sheets that show that a 65mm will make more torque than a 70mm on the same motor. You have a big cam in this car, why? With a 70mm that thing should be a torque monster.

07-17-2003, 12:29 AM	#1
PEPE Registered Member Join Date: Jul 2003 Location: San Diego Posts: 6	Help Hi guys I'am new in this site I have a question maybe you guys can help me. My car is a 1993 Mustang 5.0 with a 306 Stroker with trickflow stage III heads, solid lifters & cam (565 intake, 580 exhaust) 10:1 compresion 75 MAF. 30lbs injectors & holley system max II Inatke manifold. (150 Shot N2O) Ok, my question is: should I use a 70 mm Trottle body or 75mm? Thanks to everybody, this is the best site on the internet!!

07-17-2003, 03:14 AM	#2
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	firs tof all, a 306 is not a stroker, the cylinders are just bored .30. now for your question, being you have solid lifters, and that size cam, i doubt you drive it everyday, i would go with a 75 mm tb, but maybe go to a 77-80mm maf, also, the holley intake might need porting to match a 75, i could be wrong though. either way, that thing sounds wicked. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

07-18-2003, 01:07 AM	#3
bottlebaby91 Registered Member Join Date: Nov 2002 Posts: 141	70mm is plenty big. I have seen dyno sheets that show that a 65mm will make more torque than a 70mm on the same motor. You have a big cam in this car, why? With a 70mm that thing should be a torque monster.