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Old 04-30-2018, 07:02 PM   #1
brian schuetta
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Default 1986 tpi 350

Bought an engine on the west side of San Antonio yesterday, was told it was a 1987 or 1988 Z/28 350 TPI. When I get there it is a TPI engine but it was different in some ways, perimeter valve covers, no 9th injector, 1 piece rear main 638 block. Fifty dollars later they load it in my truck using a dog leash instead of a chain hung on an engine hoist. So does anybody know about the 86' TPI engines? It has 261 heads. 1986 was a year in transition for the SBC. I haven't pulled the intake yet but could the 638 block be a non-roller block? I have other 638s and they are two bolt main 350s, the 880s are four bolts. I did pull a valve cover and it was very clean like could have been rebuilt clean. Opinions? A pieced together engine?
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Old 04-30-2018, 08:36 PM   #2
ss3011
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Default Re: 1986 tpi 350

We used to run one in a SCCA Show Room Stock Camaro . The 350 TunePort was only available with an automatic transmission . Most of the other guys ran 305HO , QuadraJet , engines with a 5 spd manual . Our advantage was using the torque of the engine , and never revved it over 4000 rpm . Got much better fuel economy than the 305 crowd . These were typically 12 or 24 hour races , and you won if you had the most laps .
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Old 04-30-2018, 09:26 PM   #3
brian schuetta
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Default Re: 1986 tpi 350

What year car?
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Old 05-01-2018, 07:33 AM   #4
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Default Re: 1986 tpi 350

1986
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Old 05-01-2018, 11:30 AM   #5
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Default Re: 1986 tpi 350

1989 was the first year with no "9th injector".
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Old 05-01-2018, 05:11 PM   #6
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Default Re: 1986 tpi 350

What is the 9th injector ?
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