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03 GP 3.1 Throttle body

ssgtarivera

ssgtarivera

New member
From what Ive learned on just this site alone has been great.
I assume my GP has the larger 3400 intake and wanted to find out what the stock throttle body size was and if a small upgrade could be bolted direct to the manifold without porting.
 


It's most really worth doing any upgrades to a 3100 it will still be painfully slow. If you upgrade your Tb you'll need to tune for it.
 
Not ture^^ if you just put a 3400 tb on it, the 3400 tb is like 58mm and the 3100 is like 54-55mm i think(not 100% sure but its close). You say you think it has a 3400 intake? are you talking about the manifolds? or just the tb?
 


wait what, im confused? you have a 3100 all stock but it has a 3400 upper manifold and a 3100 tb?
oh i was wrong the 3400 tb is 4mm bigger then the stock one, the 3100 tb is 52mm and the 3400 stock tb is 56mm
 
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