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post #1 of 4 (permalink) Old Sep 23rd, 03, 02:15 PM Thread Starter
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i have a line on a stock tpi unit from an 89 iroc.will this set up work with a performance motor? the motor i plan on building is a 383 with afr heads comp cams 280h cam, headers ect.obviously i will need a chip made up but will this combo breath enough?is it worth it?i definatly want to go efi and can't seem to justify paying $2000 from the aftermarket companies.this motor won't see anything beyond 5000 rpm as it won't be raced.i know i should change to a bigger throttle body.any input would be appreciated.thanks....


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post #2 of 4 (permalink) Old Sep 23rd, 03, 02:57 PM
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Emtcee;

You might like to read through this and other past posts (do a search under 'tpi' in engine forum) and see if it answers some or all of your questions.

https://www.camaros.net/cgi-bin/forum...c;f=9;t=010714

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post #3 of 4 (permalink) Old Sep 23rd, 03, 03:46 PM Thread Starter
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Vintage 68,
actually i read those posts already.really i was wondering if it would be worth it to put together my own as opposed to buying aftermarket.also if the stock unit would feed enough air to the 383.thanks for the reply.


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post #4 of 4 (permalink) Old Sep 24th, 03, 04:38 AM
 
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of course it would be cheaper to setup your own opposed to buying a premade setup for your application..a stock 350 tpi setup will almost be at its limits on a 383 as far as the fuel injectors but will run fine up to 400 hp...the throttle body will flow about 700 cfm pretty good for under some sort of rpm i forgot how to do the math but its not hard to figure up..you can have the vats removed and egr and vss and all the smog junk and it will still run fine...it only uses the sensors to run (but fuel is the main concern)...if you wont to built a point and squirt car you can upgrade runners and throttle body for more flow....if needed
67 327ci w/vette tpi


[ 09-26-2003, 11:59 AM: Message edited by: gunny ]
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