Thread: Engine Assembly Question

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The head gasket supplied in the kit is 7733PT2, a composition perma-torque design. Here's the skinny on it....
http://store.summitracing.com/egnsea...nresults=false
It's good to 10.5 scr or less and 420 hp or less and displaces 8.54 cc's @ 0.039" compressed. I would do one of two things here, either cut the decks for a better squish with the 7733PT2 (zero deck will put the squish at 0.039") or use a much thinner gasket such as the Fel-Pro 1094 for a squish of 0.045".
http://store.summitracing.com/partde...4&autoview=sku
The pistons you have chosen have 4 valve reliefs and a total volume in the eyebrows of 5.0 cc's....
http://store.summitracing.com/partde...art=STL-H345NP
You have 6.3 cc's in the deck.
Assuming you go with the thinner gasket and leave the deck alone (that's what I would do), your scr would be as follows....
Volume inducted would be 731 in the cylinder, 61 in the chamber, 3.2 in the gasket, 6.3 in the deck and 5.0 in the piston. Total...806.5
Volume compressed would be 61, 3.2, 6.3 and 5.0....Total 75.5
806.5 divided by 75.5 reveals 10.68:1 scr.

I think that all will agree that it is better to build a little more compression into the motor with a tight squish than a little less compression with a loose squish and then choose a cam that will allow the motor to run on pump gas.
I might choose a hydraulic roller something like this....(I'm done with flat tappets)....
http://www.cranecams.com/?show=brows...tType=camshaft
I'd use the springs recommended by the cam grinder to go with this cam along with 1.5 rockers and a short rear gear with a 3K converter.

If you don't like what you see in this post, use a different piston or different heads and back down on the scr.