[Buick] twin throttle body manafold

[GTP 85]

I have 250rwhp so far, single throttle 3.8 ecotec.

Gonna pull it down again and do more porting, machining and increse comp. Hoping to get around about the 265-270 rwhp mark if all goes well.

I'm looking to make up my own custom fab plenum, staying with a single throttle though. I dont think it needs two

 

[Matchport]

Cleaning up your ports is Ok even portmatching. We spend Hr on our flow bench to see what works and what is not, hacking away at a port can have a negative effect on your job and bingo you are going backwards.No flow no go