[footnfan]

I had a professional shop in Orlando freshen up an old 340 ci R block (302) for me for my ex race 66 Shelby GT350. I told him, big Hp, reliable, needs to run on pump gas. It had been a high compression 110 octane guzzling 590 HP steroid build.

At the end of the day, I had a R block 302, bored .030 over...roughly 345 ci, Canfield heads..and produced as I recall 560HP on the engine dyno...and runs on pump gas.

The build is 4 years old. I drive the car every weekend in sunny Naples Florida....and has been 100% trouble free.

550hp with a modern SB build is almost ..common. 4 years ago..it was kind of cutting edge. Nothing slows progress......

I am not an engine expert, but the people I trust have told me...spend the money on the heads, so I did that and have not been disappointed.