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Old 09-09-2008, 08:12 PM   #1
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91 5.7L TPI, timing specs?
what are the stock timing specs for this car.. the decal is long gone and I can't seem to find it in my shop manual. if I recall it was 6deg btdc for my 5.0L TPI iroc, is it the same for the 5.7?

I'm trying to get a bit more power out of this car, today I check the fuel pressure and found it is good at 44psi, and the timing is set to 0.
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Old 09-09-2008, 08:54 PM   #2
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Re: 91 5.7L TPI, timing specs?
I believe the timing specs from 305 and 350 are the same on tpi cars.
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Old 09-09-2008, 10:14 PM   #3
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Re: 91 5.7L TPI, timing specs?
Funny I just did the same on mine. Owned it for 4 years now, and done a bunch of work but never checked the timing. Doh! Mine was at 1*

Stock for the L98s is the same as the 305, 6*

I'm headed to the track tomorrow night.. lol maybe I'll pick up an extra tenth
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Old 09-10-2008, 04:56 AM   #4
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Re: 91 5.7L TPI, timing specs?
Vote #3 for TPI being 6 btdc.
I believe the TBI's were 0.
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Old 09-10-2008, 09:36 AM   #5
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Re: 91 5.7L TPI, timing specs?
Quote:
Originally Posted by Viprklr View Post
Vote #3 for TPI being 6 btdc.
I believe the TBI's were 0.
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Old 09-10-2008, 09:47 AM   #6
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Re: 91 5.7L TPI, timing specs?
The 6* BTDC contestants win the round!
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Old 09-10-2008, 11:39 AM   #7
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Re: 91 5.7L TPI, timing specs?
thanks guys
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Old 11-11-2010, 06:57 PM   #8
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Re: 91 5.7L TPI, timing specs?
here is a little infor for you guys its at 6 but if you want to get just a little more power out of you time and valve tran you can more it up to about 8 or 9 and you will see a big difference
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Old 11-11-2010, 06:57 PM
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Reload this Page 91 5.7L TPI, timing specs?
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