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TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Old 09-27-2009, 07:01 PM   #1
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LT1 TB on TPI intake

please just delete this and send me in the right direction through a pm if this is a repeated post, but i did a search and could not find an answer...

can i use an LT1 throttle body on my TPI? and is it an improvement or is the LT1 a 48mm TB also?... thanks for any help and i apologize if this is an inconvenience for anyone
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Old 09-27-2009, 07:18 PM   #2
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Re: LT1 TB on TPI intake

Stock TB on an LT1 is 48mm also...don't think you would gain anything from doing the swap. We usually go to a 52mm TB...bore out the stocker and what not as the 58 tends to be a bit much unless you have serious head/intake/exhaust work to flow that much.
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Old 09-28-2009, 05:02 AM   #3
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Re: LT1 TB on TPI intake

thanks so much thats exactly the info i was lookin for
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u call it "drifting"? i call it a lack of proper traction, the fastest way around the track isnt sideways with the tires smoking (well, most of the time). oh yeah japan makes the best race bikes, but the cars are for transportation.
and thats, your new opinion!



my build thread:
http://www.thirdgen.org/techboard/en...block-zz4.html
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Old 09-28-2009, 10:38 PM   #4
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Re: LT1 TB on TPI intake

Also the LT1 throttle cam is completely different (still works)

The bottom vacuum port is missing on LTx TBs and the TPS/IAC connectors are the newer style
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Old 09-28-2009, 10:38 PM
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