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post #1 of 11 (permalink) Old Aug 18th, 19, 04:13 PM Thread Starter
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Name is Gary, hope to find some answers here.

Hi everyone. I have a 69 camaro project car. 454 ( 468 ) and it cranks but won’t start. I started a forum post with my issues. I’m hoping someone here will end my headaches. Recap, valves are set correctly, timing is correct, carburetor works, getting gas, plugs get spark, and my headache continues. Help!
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post #2 of 11 (permalink) Old Aug 18th, 19, 05:16 PM
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If the timing is correct, getting fuel, and spark , it should run if the compression is good. One of those is missing.

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1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018
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post #3 of 11 (permalink) Old Aug 18th, 19, 06:00 PM Thread Starter
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If the timing is correct, getting fuel, and spark , it should run if the compression is good. One of those is missing.
Yes that is the million dollar question. We are currently checking the pushrod lengths. Maybe that’s causing bad compression.
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post #4 of 11 (permalink) Old Aug 18th, 19, 06:47 PM Thread Starter
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The engine is an older big block. I’m getting conflicting stories on timing. Some say crank and cam 6&12=1 distributor on 1
Some say crank and cam 12 & 12 are 1 with distributor at 1. Are big blocks and small blocks different when it comes to timing?
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post #5 of 11 (permalink) Old Aug 18th, 19, 06:55 PM
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Re: Name is Gary, hope to find some answers here.

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Originally Posted by GI69cam View Post
The engine is an older big block. Iím getting conflicting stories on timing. Some say crank and cam 6&12=1 distributor on 1
Some say crank and cam 12 & 12 are 1 with distributor at 1. Are big blocks and small blocks different when it comes to timing?
It doesn't really matter. Pull number one plug and bump the starter with your finger over the hole or screw in an adapter for a compression tester and plug that end with a finger. When the compression blows your finger off that piston is coming up on the compression stroke and the rotor should point to number one plug wire on the cap. if your distributor is 180 degrees off it will pop back thru the carb and not run.

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post #6 of 11 (permalink) Old Aug 18th, 19, 07:02 PM
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Re: Name is Gary, hope to find some answers here.

Both at 12 o'clock is TDC #1 compression.
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post #7 of 11 (permalink) Old Aug 18th, 19, 07:41 PM Thread Starter
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Thank you all. The motor sat for a few years when I moved south. I think the timing is right but I think the rings might be bad. Anyone want to buy a motor 😂😅
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post #8 of 11 (permalink) Old Aug 19th, 19, 05:18 AM
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If you have long pushrods on both intake and exhaust, you will not get compression. The valve will always be a little open.

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1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018
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post #9 of 11 (permalink) Old Aug 19th, 19, 09:54 AM Thread Starter
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If you have long pushrods on both intake and exhaust, you will not get compression. The valve will always be a little open.
.

We checked the pushrods and they are correct, we are thinking it’s rings 🙄
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post #10 of 11 (permalink) Old Aug 19th, 19, 10:30 AM
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Re: Name is Gary, hope to find some answers here.

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Originally Posted by GI69cam View Post
.

We checked the pushrods and they are correct, we are thinking itís rings 🙄
Welcome. BTW, you have a 460ci motor, not 468ci. 468ci is .060" over and you said you're .030" over.

'69 SS396 X66 L34 08D M21 BS
460ci Gen VI 9.75:1 HP 950 carb
241/249 @ .050" .625/.625 110 LSA

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"The galleries are full of critics. They play no ball, they fight no fights. They make no mistakes because they attempt nothing."
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post #11 of 11 (permalink) Old Aug 19th, 19, 02:28 PM
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Re: Name is Gary, hope to find some answers here.

Cranks
Have spark
Getting fuel

No real reason to not run....As said above, turn over by hand with a finger over the #1 plug hole to find TDC.
Check rotor points at #1
Put plug back in
Leave distributor semi loose and mark the base to go back to later
Have someone crank while you turn the distributor slowly one direction and see if you get anything
Nothing ? go back to mark
Try cranking again and turn the other way, slowly, and see IF you get anything.

IF it starts, get a timing light on it quick.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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