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Re: Engine cuts out after driving 20 min, ideas?
If you have not already, Compression test the engine first! It helps a lot to rule out valve and ring problems first! 8)
On a side note, I put a new mechanical fuel pump on my 1970 and the secondary bowl on my Holley 600 started to flood.
I ended up having to regulate the pressure to keep it stable.
Last edited by 1970 Custom GMC; 04-24-2021 at 02:12 AM.
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