0 comp in #4 cyl.

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Jun 26, 2011 | 07:08 PM

#21

Rick364ls

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Springs junk that is why it bent

Jun 27, 2011 | 12:12 PM

#22

remauto1187

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From: Rosedale, Indiana

Quote:

Originally Posted by trans_am7935

i hate to tell you this but looks like you are running an LT1, not a LS based motor, you sure that is a 99 Tahoe? cause they didnt put the LT1 in any car after 1997.

I hate to tell you this....but he is running a VIN R 350 NON LT based engine. His is also not a "LS" based engine either.

1999 was the crossover year where you could have a "LS" based engine (5.3L,6.0L) or a Gen 1 vortec 5.7L. My 99 Sierra has the same engine. Vortec Gen 1 have a ignition distributor. VORTEC LS based DO NOT have an ignition distributor.

You also cannot associate the word "Vortec" specifically with one engine series since LS and NON LS based engines both came with Vortec induction (Heads). You can have a GEN1 vortec 5.7L or even a Gen 3 (LS Based) 5.3L or 6.0L with Vortec "package" so the VORTEC is not engine series specific.

Jun 29, 2011 | 08:06 PM

#23

gary pierce

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From: Germantown, TN

Head shop said the valve stuck due to our crappy ethanol gas. Got lucky no cracks just a bent valve so I will do a comp check as soon as I put the head on to check the rings in that cyl. I asked about the springs and they said they were ok.

Jun 29, 2011 | 08:41 PM

#24

Rick364ls

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Put springs in it you will regret it. They only have like 90# on the seat new. Doesn't take much for them to fail

Jun 30, 2011 | 05:48 PM

#25

gary pierce

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From: Germantown, TN

Quote:

Originally Posted by Rick364ls

Put springs in it you will regret it. They only have like 90# on the seat new. Doesn't take much for them to fail

I'll get some since the heads were ok. Do I get stock springs. Thanks

Jun 30, 2011 | 09:23 PM

#26

1994Z28Lt1

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From: Elko MN

Quote:

Originally Posted by gary pierce

good god people are still blaming things on the ethanol in gas??

that is completely ridiculous!

at the very least i hope you are replacing all the the valve springs, there is no logical reason for the valve to just all the sudden stick unless it has been bent because of contact with a piston.

I could have been a rocker issue or a spring issue, maybe some mechanical over-revving? not easy with an automatic, but is possible

Jul 1, 2011 | 02:35 AM

#27

remauto1187

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From: Rosedale, Indiana

"good god people are still blaming things on the ethanol in gas"

Yeah the ignorant fools still are!

Jul 1, 2011 | 08:28 PM

#28

gary pierce

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From: Germantown, TN

Got my heads today with NEW springs, seals, and valve job. We tested every spring, and the NEW ones were 10 pounds higher than the old, so you guys are right. Also got some new head bolts and head set. I guess I have to get to work on the motor tomorrow even though its going to be 99 degrees.
Thanks for the input everybody.