75MM throttle body necessary for 351?

SuperIrish · 04-11-2002, 10:13 AM

I was contemplating stepping up to the 75MM throttle body but wondered what sort of gains I could expect with it. I recall reading that 70's flow nearly 700 cfm, wouldn't that be enough for this fairly mild set-up I've got?

David

sn95gt19 · 04-11-2002, 12:34 PM

i have a 75mm on my 306 and it seems to like it ive got heads intake cam headers just about everything you can bolt on, so i would go with the larger one your car most likely flows more air than mine and mine likes the 75mm

Stang Runner · 04-11-2002, 05:05 PM

I would Run 70MM if it is Not a Race only car the 75mm might be a bit to much. I know a few Guys that WOULD NEVER put more then 65mm on a 302/306 they Say there is not need at all for a 70mm less it is a Race only car. And I am sure that 75MM is a Bit of Over kill less you Have 430+ or so.

gtsr515 · 04-11-2002, 05:14 PM

70mm is plenty for you.

04-11-2002, 10:13 AM	#1
SuperIrish Registered Member Join Date: Sep 2001 Location: Fort Walton Beach, Floriduh Posts: 10	75MM throttle body necessary for 351? I was contemplating stepping up to the 75MM throttle body but wondered what sort of gains I could expect with it. I recall reading that 70's flow nearly 700 cfm, wouldn't that be enough for this fairly mild set-up I've got? David __________________ David Claflin 1990 Red LX, 5.0, EEC Tuner/EEC Analyzer, daily driver 1988 GT, in pieces 1990 Red Harley FXRS, Andrews EV-3 cam, corbin seat, baby apes, other stuff 2003 Eddie Bauer Expedition 5.4L(wifemobile) bone stock and staying that way

04-11-2002, 05:05 PM	#3
Stang Runner Registered Member Join Date: Jun 1999 Location: Walker, MI, USA Posts: 1,202	I would Run 70MM if it is Not a Race only car the 75mm might be a bit to much. I know a few Guys that WOULD NEVER put more then 65mm on a 302/306 they Say there is not need at all for a 70mm less it is a Race only car. And I am sure that 75MM is a Bit of Over kill less you Have 430+ or so. __________________ Engine: steel mounts, Under drive pulleys, K&N, GT-40 Intake ported Lower, No power steering, No A/C, Mac cold intake, 65MM TB, 255 Fuel pump, 24's, AFR 165 58cc, Rocker Arms 1.7with the stock Cam, 1 5/8 short headers, offRoad X-pipe Drive Train: 3.55, T-5 with a Pro 5.0 shifter 12.656@107.71MPH See It at www.T-racing.com/mustang.htm

04-11-2002, 05:14 PM	#4
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	70mm is plenty for you. __________________ Remember...2nd place is 1st place for losers!

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04-11-2002, 12:34 PM	#2
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	i have a 75mm on my 306 and it seems to like it ive got heads intake cam headers just about everything you can bolt on, so i would go with the larger one your car most likely flows more air than mine and mine likes the 75mm