What size throttle body?

[SBC RACING]

Ive decided to go with 42lb injectors and an 80mm maf for my 9 psi (powerdyne) supercharged cobra that i will be modding further in the future (heads, cam, intake) and i wanted to know what size throttle body i should go with. Ive read that 65mm is plenty for most setups and that bigger is not always better, but i just want to make sure. What do you guys think?

 

[Grn92LX]

You read wrong. First of all, what intake manifold will you be using? If your stock now, just keep the stock TB and hold off until you do h/c/i. Then i'd run a 75mm tb with that car and if the manifold inlet isnt a 75mm opening, port match it w/ a dremel.

I'm gonna slowly sneak out the back door before the internet racers and magazine racers get a hold of me and beat me up

 

[SBC RACING]

reply

If i decide to just stay with the 9psi supercharged setup and stock cobra motor, what size throttle body should i go for?

 

[Grn92LX]

70mm TB at least and be sure the tb matches the inlet perfect.

 

[Joes95GT]

You read wrong. First of all, what intake manifold will you be using? If your stock now, just keep the stock TB and hold off until you do h/c/i. Then i'd run a 75mm tb with that car and if the manifold inlet isnt a 75mm opening, port match it w/ a dremel.

I'm gonna slowly sneak out the back door before the internet racers and magazine racers get a hold of me and beat me up

Joe

 

[Grn92LX]

Hey, I was nice

 

[onebad95]

pm me I have 1 polished and 1 unpolished 70mm bbk for sale.