what size t.b. with this combo?

[v8only]

that rpm 2 will be way too big for your combo,...switch out to an explorer intake or the sort.

 

[Deleted member 87397]

Basically I've noticed that with the different sizes, and I've had 3 diff ones on the same combo is this: the larger you go on TB size the more your intake velocity slows and you lose some of your low end power. For that combo you can do a 65 with no trouble and you'll feel great bottom end and it will not run out of air on the top end. If you use it for a while and need to step up just sell that one and buy a new one. You can unload a used TB on ebay easy for a good price and buy a new one. If you don't want the hassle of doing that then shoot for one that will give you some room to grow.

 

[5spd GT]

Hmmmmm.... Me too. Lol....

Just got it running yesterday. Now I'm waiting to get it tuned. Hopefully today or tomorrow. Damn rain...

Your just confusing him David.

The idea is to match your combo.

- Congrats

68keyblr - The 75mm won't hurt your performance at wide open throttle while racing, but just understand you don't 'need' the air that it can provide.

Russ1979 - If you are going to run a 347 and are going to add boost to the mix (assuming aftermarket block/forged internals), get the 75+ mm...