Hi,
I have an SP383 GM Performance crate engine with less than 500 miles on it.
When I first got the engine (new), I did a complete flush of the cooling passages and found that a lot of Block casting sand was being flushed out.
I have the recommended Holly 770 CFM Carb installed. Engine runs hot and the exhaust will burn yours eyes.
GM recommends only using mechanical advance with the vacuum disconnected and plugged.
Engine runs good, just runs hot on warm days.
I will be improving the cooling system this spring.
Any suggestions on the exhaust issue? Carb is brand new. I can try to have it tuned to see if that helps the exhaust issue.
Should I think about using a fuel additive to increase the octane level? Currently using 93 octane pump gas.
Nothing like coming home smelling like exhaust.
Thanks.
I have an SP383 GM Performance crate engine with less than 500 miles on it.
When I first got the engine (new), I did a complete flush of the cooling passages and found that a lot of Block casting sand was being flushed out.
I have the recommended Holly 770 CFM Carb installed. Engine runs hot and the exhaust will burn yours eyes.
GM recommends only using mechanical advance with the vacuum disconnected and plugged.
Engine runs good, just runs hot on warm days.
I will be improving the cooling system this spring.
Any suggestions on the exhaust issue? Carb is brand new. I can try to have it tuned to see if that helps the exhaust issue.
Should I think about using a fuel additive to increase the octane level? Currently using 93 octane pump gas.
Nothing like coming home smelling like exhaust.
Thanks.