[Ant]

Bob,

Regarding radiator size, you use the 2 X 1.25" Alloy radiator, and as your website states it cools everything up to hot big blocks!
I am having a radiator built here in Christchurch NZ, they have in their alloy cores:
2 X 1"
4 X 1/2"
3 X 1"
I am not that keen on the 1/2" tubes! for an around 500bhp small block 2 X 1" could be marginal, but the builder says he will replace it if it doesn't cool properly. 3 X 1" would be heaps, but its going to end up almost 4" wide, and I think all the extra weight of water etc.

To cut a long story short I am trying to find someone like yourself who knows what a small block can get away with in this area, any info gratefully appreciated.