I have a 58mm throttle body, is this going to be too big for a 357?
Anyone out there have a 52mm that they want to trade?

Dave
drb930@netzero.net

 

"I have a 58mm throttle body, is this going to be too big for a 357?"

The answer is maybe. If you don't open up the plenum to match the 58mm than yes it is too big. From a technical standpoint the answer is no. I run the 58mm myself.

 

if all the porting has been done and your running 450-500+ hp then the 58mm would be better. 58mm just flows more air which would mean that our motor would have to be a rever or u will lose low end hp/tq bc the velocities would be lower... like 5500-6000rpms or more peak hp

 

On a stock car its over kill. What else has been done besides the 7 extRA cubes?

 

Sorry forgot the details-

357, 4-bolt mains, 010 block
Forged "Pink" rods and Lunati forged crank
Windage tray and baffled oil pan
TRW forged pistons 10.5 to 1
AFR 195 Street Elim 64cc heads
LPE 219/219 560/560 cam
LPE intake, 30 lb injectors
Block converted to full roller using V-6 lifters
Doug Thorley Tri-Y headers.

Dave

 

There is no reason to run a 58mm throttle body on a car running 450 horse. The 52mm works great until around 600 horse. You don't need the 58mm (1100) cfm which is overkill unless your making serious horsepower. The equation for that would be for every horsepower that you make you need 1.5 cfm of air for it.

 

That's what i think also, i going to try to trade it out for a 750 CFM 52mm.
If anybody knows someone that wants to trade, please let me know.

Thanks,
Dave

 

You should get a ton of offers.

 

Bump-
Still looking for someone that wants to trade their 52mm for a nice 58mm.

Dave