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Chevy TBI



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Old 11-30-2005, 08:15 AM   #1
Gonzo Wheeler
 
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Chevy TBI

Does anyone know how much HP the TBI setup in 87-91 Chevrolet's is good for. I think I scored one and was thinking of putting it on my Suburban (454).
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Old 11-30-2005, 03:24 PM   #2
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I'm pretty sure the stock setup is 180hp.
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Old 11-30-2005, 06:24 PM   #3
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Which one? The BB used a larger bore.
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Old 11-30-2005, 07:11 PM   #4
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Quote:
Originally Posted by dott
I'm pretty sure the stock setup is 180hp.
Oops, I missed that. I was talking about a 5.7L. Sorry.
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Old 12-01-2005, 10:31 AM   #5
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I apologize as well....it is off of a 5.7......and I plan to put it on my stock 85 454 in my Suburban......
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Old 12-01-2005, 03:59 PM   #6
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~~*UPDATE*~~

Well what I have FINALLY found is that a TBI 350 is rated @ 210 hp and my 454 is rated @ 230 hp.

I am going to try it out and see......
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Old 12-21-2005, 04:48 PM   #7
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Also, Howell makes a plate to convert from 5.7 tbi to Speadbore.
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Old 12-21-2005, 06:22 PM   #8
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I beleive GM also used a conversion plate from the factory on some of the early TBI 454s. Should be able to get it at the dealer.
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Quote:
Originally Posted by RVREDDOG
Thats pretty much how I feel about it....You gone yet?
Reality is an illusion caused by the absence of alcohol.

75 IH Scout II
79 Chevy K10
80 GMC K25
97 Chevy S10
05 Dodge 3500

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Old 12-21-2005, 06:38 PM   #9
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Sweet!
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Old 12-22-2005, 07:22 AM   #10
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Dont know if this will help you or not, since it's for a square bore.
http://www.jabnasty.com/forum/phpBB2...opic.php?t=268
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Quote:
Originally Posted by RVREDDOG
Thats pretty much how I feel about it....You gone yet?
Reality is an illusion caused by the absence of alcohol.

75 IH Scout II
79 Chevy K10
80 GMC K25
97 Chevy S10
05 Dodge 3500

Collect the whole set.
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Old 01-06-2006, 11:36 PM   #11
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Found this one on Summit's site. http://store.summitracing.com/partde...6&autoview=sku
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Zach


Quote:
Originally Posted by RVREDDOG
Thats pretty much how I feel about it....You gone yet?
Reality is an illusion caused by the absence of alcohol.

75 IH Scout II
79 Chevy K10
80 GMC K25
97 Chevy S10
05 Dodge 3500

Collect the whole set.
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Old 01-07-2006, 09:40 AM   #12
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Thanks!

I found alot of info from Howell and from the leads given here and GOOGLE.......COM

injector size ranges from 40lb/hr to about 80.......

I found some adapters online for CHEAP........,but the new ones aren't really that much more.........

All one needs, as far as wiring, is from the three computer plugs trhrough the firewall on the passengers side that connects to the engine sensors....

When I pulled mine, I pulled the sensors and labeled ALL connections, so I would REMEMBER when I reinstalled it on the 7.4.....
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2003 Ford Ranger 4 cyl 122 rwhp, lol
2005 CTSV 390 RWHP RIP
2005 CTSV TT 700 RWHP

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Old 01-07-2006, 10:05 AM   #13
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Also, if you use full length headers, you either have to have a heated 02 sensor or move the sensor closer to the head.......

GM mismatched sensors, pressure wise, so as to help with gas mileage, so the only real way to know exactly what rating your injectors ave is to have them flowed......
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