A 260 what, on a 350 what, might help us answer that.
it would be a 260 a 350 and 305 are Chevy motors
WILL IT STLL RUN ?OR IS IT DEAD ?
74.29%
Compression ratio on a 1974 Chevy 350 in a Nova was 8.5:1.
About 260 kgs
260
8.5 to 1 compression is factory stock.
head gaskets??? warped heads? did you have them milled?
The compression ratio of a 350 Chevy engine usually ranges from 8.0 and 9.0 to 1. This provides a good balance of fuel economy and power.
I believe it is 260 horsepower.
There's no way to answer that, but putting 305 heads on a 350 would increase compression ratio by about 1 point, which usually increases hp by about 20.
Not a good idea. 350 heads will lower compression to 7 to 1 or less.