65mm throtle body

[C. C. Stang]

Is it worth it to replace my 58mm stock throtle body w a 65mm one? C.A. I., headers, h-pipe and catback on an 86 GT

 

[92BlackGT]

No, you dont need it. If you plan on new heads in the near future, maybe. But right now, no. I'de get gears....you'll definately feel a difference there.

 

[5.0Droptop]

I agree. I recently read a report from a speed shop that used Kenny Brown Dyno to test The TB swap They ran stock then 65 then 70 mm tbs
The gains were minimal like less than 2 hp and 2#tq
They said same thing get gears exhaust etc.

 

[DTT92LX]

Yep, gears'll give you the kick.

 

[Ozz]

Ditto.
After the exhaust work, including headers, it would be worth buying. A friend of mine put a 70 on his car w/full exhaust and loved it. I traded him a 65mm for it and he notices no difference.

Of course there are better things to buy but at least w/full exhaust you will notice some power.

 

[Michael Yount]

The lower intake and the heads are your next big bottlenecks. Gears are probably the biggest bang for the buck.