Originally Posted By ChevyTS
I heated the cylinder head up before I filled the crossover. This was actually a practice run for job that I am working on. I am building a 1969 455 Olds engine with a set of C castings. The Olds heads have huge exhaust crossover passages. Filling then helps quite a bit.


Then you have a much better chance of it staying in there.

Never tested it on an Olds so hope you post the results.

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston