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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 05-17-2002, 01:12 PM   #1
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TB to TPI
I have a buddy that has a 1995 350 with a TB on it, his son gave him a TPI off a 305 . He has every thing except for the ECM and the MAF sensor. Will this fit and what wiring harness will he need. Thanks for any info
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Old 05-17-2002, 01:21 PM   #2
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Define "TB on it"

TBI ?

1995 what? truck?
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Old 05-17-2002, 02:30 PM   #3
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Sorry a 1995 Blazer with TBI, it is now in a 1972 chevy P/U
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Old 05-17-2002, 03:06 PM   #4
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I thought they were using CPI by 1995. If that's the case, that 305 TPI will need a lot of work to keep up with a CPI. I have read that they work really well. You will also need a different base for the TPI if you plan on using the stock heads as they are most probably Vortecs. My vote is to stick with the CPI.
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Old 05-17-2002, 03:23 PM   #5
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It sure looks like the TBI to me it has the spray knozel on top and you can see the fuel being injected it to the TB. What is CPI ?
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Old 05-17-2002, 10:19 PM   #6
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CPI stands for "Central Port Injection". Check it out. This one is off of a '99/
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File Type: jpg cpi.jpg (27.3 KB, 44 views)
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Old 05-17-2002, 10:20 PM   #7
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Here's another shot:
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Old 05-18-2002, 12:38 AM   #8
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that is not what he has on his 350 now it looks like a TBI, He never saw what it came out of but was told it was a 95 blazer.
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Old 05-18-2002, 12:38 AM
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