motor overheats..please help
#1
Junior Member
SHOW GUEST
Thread Starter
Join Date: Sep 2007
Posts: 2
motor overheats..please help
i run a street stock class on a small small 1/4 mile so were not going very fast which means not much airflow
motor is pretty much a stock chevy 305 i run a hei dist. and a 2bbl rochester carb
radiator is a 3 core gm radiator
i have tried both electric and manual fan with shrouds..
i cant run a whole feature event without the motor getting so hot it pushes most if not all the water out of the radiator... please help
motor is pretty much a stock chevy 305 i run a hei dist. and a 2bbl rochester carb
radiator is a 3 core gm radiator
i have tried both electric and manual fan with shrouds..
i cant run a whole feature event without the motor getting so hot it pushes most if not all the water out of the radiator... please help
#5
Senior Member
DYNO OPERATOR
Join Date: Apr 2008
Posts: 504
Have you concidered that the cam timing is too advanced. This is a common problem with many stock chevys using towing cams. The other likely player would be a EGR that never shuts off. Sometimes the EGR gets hooked up to a vaccume source that keeps it active under full power. That will cook the intake and cause the engine to run lean. Then are you possibly running real lean?
Food for thought..........
Food for thought..........
#7
Senior Member
RACING JUNKIE
Join Date: May 2006
Posts: 2,044
Like above mentioned I'd try a new 15 to 16 psi cap first -thats a cheap fix.
Other thoughts....
I'd go with a bigger raditor if the rules allow, you might also consider a aluminum one if you can spare the change, they really make a difference.
Also a aluminum high flow water pump will make a big difference too - they can be had for around 50 bucks just about anywhere, I got mine from a vendor on here.
Goodluck, Charles
Other thoughts....
I'd go with a bigger raditor if the rules allow, you might also consider a aluminum one if you can spare the change, they really make a difference.
Also a aluminum high flow water pump will make a big difference too - they can be had for around 50 bucks just about anywhere, I got mine from a vendor on here.
Goodluck, Charles