?? About throttle bodys

Topic: ?? About throttle bodys (Read 3457 times) previous topic - next topic

?? About throttle bodys

Reply #15 – January 14, 2015, 05:53:30 PM

Question if I were to replace my current T/B on a stock 5.0L 302, to say a 75mm or a 90mm would I tell a difference? Heck I dont even know what the stock T/B mm is anyways. Okay call me dumb for asking but hey gotta ask if you want to know right.....

?? About throttle bodys

Reply #16 – January 14, 2015, 06:37:59 PM

Just keep the stock throttle body until you swap the intake. A 65mm is about as big as you will need to go until you swap heads and cam and get a little more wild. 75 and 90 is WAY too big. Swap on an Explorer intake, 65mm t-body and a 65mm egr spacer. Until then...let it go.

?? About throttle bodys

Reply #17 – January 15, 2015, 04:41:35 PM

Quote from: dan1863;442902

Question if I were to replace my current T/B on a stock 5.0L 302, to say a 75mm or a 90mm would I tell a difference? Heck I dont even know what the stock T/B mm is anyways. Okay call me dumb for asking but hey gotta ask if you want to know right.....

You could slap a 75mm on it and not notice much of a difference. General rule of thumb is (general rule=does not apply in all situations)

65mm TB: stock and or GT40 iron heads
70mm TB: 302-306 with a mild cam and aluminum heads
75mm TB: 302 with a aggressive cam, big heads and intake or a 331+ engine
90mm TB: 331+ engine

Then again my wife's '12 3.7 Mustang comes with a 73mm TB from the factory. So take that for what it's worth.

?? About throttle bodys

Reply #18 – January 15, 2015, 04:52:16 PM

Read: http://sbftech.com/index.php?topic=15585.0

?? About throttle bodys

Reply #19 – January 15, 2015, 05:01:27 PM

Quote from: V8Demon;442956

Read: http://sbftech.com/index.php?topic=15585.0

Yep. Really if you're going to buy a throttle body just get a 75mm. Or bigger. I only have a 70mm as I found an almost new 70mm Edelbrock TB at the junk yard and got it for ~$35. Otherwise if I was buying new I'd get a 75mm.