Engine 70mm or 75mm for my combo

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
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a van down by the river
Hey guys, will i benefit at all by going to a 75mm throttle body. Ive got a 333 ci stroker, tfs track heat intake and looking to add single turbo kit. stock bottom end for now. Im thinking with the intake opening as being 75mm, the turbo puping being 3", i should upgrade my whistling 70mm bbk to a 75mm accufab. Thoughts?
 
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I think it is a good idea to match your openings.. Is it worth spending a bunch of money?? Not to me.. Unless you can find a used one somewhere I wouldn't buy one.. Money could be better spent IMHO.. Fix the whistling.. It's prob just a sharp edge somewhere that is causing the whistle.
 
Turbo with a stroker and you'll be able to make enough power to split the block with ANY throttle body. I don't often say this, but I think in your case going to a bigger throttle body isn't money well spent. Save that money for a Dart or a Windsor, haha.
 
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