3.4 tb question

[l67ss]

Ive heard there were bigger tbs than the 3.4s 56mm tb what are they from?

[RobertISaar]

all 3400s should have a 56mm TB. i want to say all 3100s had a 52mm unit. the 3.5 shortstar has i THINK a 65mm unit, it doesn't directly bolt on, but WOT-Tech has/had an adapter for them for fairly cheap. if WOT-Tech doesn't stock them anymore, britishcarconversions / TCE would likely still have them.

[19Cutlass94]

The small port 3100's had the 52mm TB. The large port 3100's had the 56mm TB.

 

 

Sent from my iPhone

[l67ss]

I swapped on the 56mm tb i just wanna go bigger ps my engines 3.4 with a 3.1 intake

[RobertISaar]

The small port 3100's had the 52mm TB. The large port 3100's had the 56mm TB

 

if so, then it would be safe to say all large-port manifolds got the 56mm unit then, since the 96-99 3400s received them as well.

[l67ss]

Something i noticed when i swapped on the 56mm tb was that it didnt have a hole in the butterfly for the idle, my 3.1 tb did. When i put it on it wouldnt even run without holding the gas. Guess that means i have no vaccum leaks huh?

if so, then it would be safe to say all large-port manifolds got the 56mm unit then, since the 96-99 3400s received them as well.