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Pontiac of the Month

onetrick56's 1964 Grand Prix

2020 September
of the Month

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Question

New to the forum working on a 33 Pontiac sedan with a1968 400 in it with tri power having a problem with finding what the timing mark should be any help would be appreciated thank you in advanced 

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Would like to possibly answer your question if I can....Could you be more specific on exactly what it is you're looking for..??

Finding TDC..advance....retard...total timing..settings.. dwell...Does it still have the stock cam...ETC..

TLBT

Edited by TWO LANE BLACK TOP
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Sorry I don't know I think it is a stock cam I'm still researching everything all cylinders have between 112-120 compression it just doesn't have the power I think it should have

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On 2/24/2020 at 6:23 PM, TWO LANE BLACK TOP said:

Would like to possibly answer your question if I can....Could you be more specific on exactly what it is you're looking for..??

Finding TDC..advance....retard...total timing..settings.. dwell...Does it still have the stock cam...ETC..

TLBT

 

1 hour ago, Tom DiMaggio said:

Sorry I don't know I think it is a stock cam I'm still researching everything all cylinders have between 112-120 compression it just doesn't have the power I think it should have

Tom, what Two Lane ask is relevant and those readings are adequate, but not great! The fact that you have that much variation between cylinders indicates a deficiency somewhere. I would recommend you do a leak down test! This will start to help you determine if it’s valves, seals or rings. So for right now I think you need to answer those questions first. Once those are answered let us know what you discovered. We can than help you with further steps forward.

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