Low power 5.0 TPI

[Programmer]

Sorry--forgot to mention cam spec.
217 EXH at 0.50
212 INT at 0.50
1.6 ratio rockers, Dart heads ported, 9.35 actual
comp ratio. With 94 octane--it apparently only pulls timing to 24 at WOT.
They haven't checked the AFR's at WOT on a dyno--but the O2 numbers
remain 900+mV at WOT "cruise"--seems to me like a mondo exhaust or intake
restriction....but this thing has apparently had new, new, new stuff
everywhere
and added twice.
Lyndon
-----Original Message-----
From: timsiford at hushmail.com <timsiford at hushmail.com>
To: gmecm at diy-efi.org <gmecm at diy-efi.org>
Date: October 27, 2000 11:11 AM
Subject: Re: Low power 5.0 TPI


>My biggest question is what is the cam in this motor?  That stock cam will
>act just like he is saying.  I would also check the AFR at the higher RPMs
>to ensure that the 19lb injectors are supplying enough fuel with the stock
>programming.
>
>Tim
>
>At Fri, 27 Oct 2000 10:33:48 -0600, "Programmer" <nwester at eidnet.org>
wrote:
>
>>
>>Hi gurus,
>>Got a weird one here I'm trying to help a performance shop on. Subject
>>vehicle is an '88 5.0L TPI with 5 speed and 3.08 ratio--running an AKFU
>>code
>>'165 computer. This code was a one time vehicle Pontiac Firebird--the
>>whole
>>thing has been placed in an S10 truck. This thing falls flat after 4500
>>RPM,
>>MAF never goes above 175 g/s--pulls timing down to 12 BTDC (with no
>>knock)
>>and the shop swears this thing should pull like crazy with the internal
>>engine mods. This thing has the Lingenfelter <sp> intake, TPI runners,
>>etc...Dart heads, 10.5 CR, blah, blah. FP is good, TPS goes 4.7 WOT,
>> however
>>this truck is 12 hours away, so I can't personally test....any ideas
>>?
>>Lyndon
>>
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