Wickedws6ta

Hey all you lt4 guys I need help. Im trying to find what size trottle body I need to buy for the lt4 setup im getting ready to put on my TA?? Also what brand would be the best ot go with for the money??

Speed Density

iTrader: (38)

Holley 58mm TB

Or you could be a guniea pig and get the new summit ones.

Tony.

BlackScreaminMachine

iTrader: (17)

i liked my bbk 58mm

streetwarrior96

Holley 58mm

Formula350

iTrader: (3)

My 91 TPI loved the 58MM, moreso after I ported the intake for it. Mines a BBK, and I'll be putting it on my 93 here soon. Only diff I can tell from the 91 and 93 TB is the TPS sensor is round plug instead of square, so different mounting. I'll be changing the wireing harness to the flat 4 enlight of that. Save myself $300 getting a new one.

GIZMO

iTrader: (8)

Run the stock throttle body and spend the money on a good tune.

koolaid_kid

iTrader: (21)

Match the diameter of the tb with the diameter of the opening in the manifold. Any larger will be wasted, and could cause turbulence. My LT1 has a 52mm opening, not sure on the LT4.

PunishedU

iTrader: (1)

I am going to have to go with this statement. I bought a holley 52mm from a sponsor and immediately had problems with the blades sticking at idle. I read up more and found this was common with them. BBK has had issues in the past with the blades sticking at wide open throttle, not good.

I went back to my stock but polished it up a bit and put a new plate to make it look nice. Thats my opinion.

Mike

koolaid_kid

iTrader: (21)

I have a bored stock tb, and it is great. No issues like you run into when going aftermarket.