The 454 in my 70 runs at 190 most of the time and if it's hot and humid like it typically is here in NJ during the summer, it will climb to 205 and hit 220 in traffic. Big Blocks are good up to 230, if it goes higher than that, then you worry.
Tom
The 454 in my 70 runs at 190 most of the time and if it's hot and humid like it typically is here in NJ during the summer, it will climb to 205 and hit 220 in traffic. Big Blocks are good up to 230, if it goes higher than that, then you worry.
Tom