Quote:
Originally Posted by jbarron
Add more initial timing.
I had the same issue. I'm more like 18-20 initial 36 total(mechanical), vacuum advance adjusted to just keep it from pinging.
Carb could be a little lean, check the plugs. They are not perfect out of the box.
Went back to factory AC water pump. The HV pump was doing more harm than good.
A 165 thermostat will give you more temp room to play with. Also only use one vent hole 1/8" if there is not a check valve in it already. The water flow around the tstat affects its opening.
Mine is one of the GM 290HP crate motors with eldebrock 600 carb. Added vortec heads, but heating problems started with originals.
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Plugs have a great burn to them .. so carb seems right . I dont have a lean bog off the line and it runs hard through 1 to 3 pulling you into the seat as it does i used a vac gauage to adjust the carb . Ok i will try a 165 Tstat ill will also try to throw more timing at it . But im not sure this will be good as i live in CommieFornia where our gas crap and sold for a mint to us lol