We didn't fill the water jackets...sorry if that was misleading.
I meant we just used a stock block with stock parts and KB pistons.

Everytime I use the Thumpr cams they make good power with a very wide powerband. We probably could have made more power with the 275HL cam but I like that the thumpr is on a 107lca and with low compression it helps kick up the low end power.

Plus with stock rockers, too much lift is a bad thing.
The heads flowed 243cfm at .550 lift and 241 at .500 I think.
From the crack of the intake valve it really flowed well up to .500 lift.

I believe there was about .045 left of the open chamber, so with a .045 gasket it was about .090 which can be bad if you don't plan it right. We installed the cam straight up instead of advanced like Comp recommends to keep from having too much cranking psi and to give some top end power to a stock headed/rocker arm'd build.

I'm sorry I forgot to take pics of the dyno sheet, I know that will answer alot of questions but I can tell you I wouldn't hesitate building this exact combo for a customer...except I would recommend a 1.6 aftermarket rocker assembly for power and durability reasons. I don't know just how long the stock rockers will hold up to 6000rpm and 280lbs. of spring pressure.