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Post by roughneck427 on Sept 15, 2005 11:43:20 GMT -5
does anyone know if the tpi and lt1 throttle body bolt pattern is the same i was going to use a tpi plate on my lt1
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Post by fast93z on Sept 17, 2005 10:59:58 GMT -5
I really dont think they are the same. I am not a fan of nitrous plates on LT1's. I prefer a single nozzle before the t-body or even better a direct port fogger. The plates just dont seem to have time to distribute properly....especially on the front two cylinders. Just my .02 ....
Can anyone else elaborate here about the bolt pattern for the t-body? I am not 100 %.
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Post by N20Dave on Sept 25, 2005 21:45:40 GMT -5
Not sure about the bolt pattern but I will agree on the nozzle over a plate. Ideally, the distribution point should be 6-8 inches from the throttle opening. Otherwise the front cylinders are much leaner that the rears. Plates don't have the distance to atomize for those fronts.
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Post by slow260z on Nov 24, 2005 19:52:09 GMT -5
PS I have a plate system from NOS designed for a TPI. The plate bolts to the LT1 intake BUT the plate is 58 mm.
So you MUST bore the LT1 throttle body holes in the intake to 58 MM. This work REQUIRES the intake be REMOVED from the engine!
IF you try to bore it in place you will never get all the metal shavings and the more will be destroyed in a couple thousand miles.
Good luck
PS Since I have the plate system you might guess that I feel it is safe for small shots <150.
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Post by Fire67 on Feb 27, 2006 9:35:42 GMT -5
Yes the bolt pattern is exactly the same. I agree, no plates.
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