l67ss Posted October 14, 2013 Report Share Posted October 14, 2013 Ive heard there were bigger tbs than the 3.4s 56mm tb what are they from? Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted October 14, 2013 Report Share Posted October 14, 2013 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. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted October 14, 2013 Report Share Posted October 14, 2013 The small port 3100's had the 52mm TB. The large port 3100's had the 56mm TB. Sent from my iPhone Quote Link to comment Share on other sites More sharing options...
l67ss Posted October 14, 2013 Author Report Share Posted October 14, 2013 I swapped on the 56mm tb i just wanna go bigger ps my engines 3.4 with a 3.1 intake Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted October 14, 2013 Report Share Posted October 14, 2013 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. Quote Link to comment Share on other sites More sharing options...
l67ss Posted October 14, 2013 Author Report Share Posted October 14, 2013 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. Quote Link to comment Share on other sites More sharing options...
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