Team Chevelle banner

Does change adv curve, engine run hotter?

1539 Views 8 Replies 4 Participants Last post by  Jim_66SS
I put in lighter springs so that the distributor advance comes in sooner. Now the car seems to run about 23* hotter. This is on a stock 66 396/360hp. Is this normal? Thanks.
1 - 2 of 9 Posts
You sure nothing else in the timing or anything else changed? If the timing is really retarded it will run hotter but advancing the timing shouldn't cause a 23* change in temp.
Yes, retarded timing will cause the engine to run hotter. A very lean fuel mixture will also cause higher temps. Any vacuum leaks? That would cause a lean mixture.
1 - 2 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.