Hi I am building a 95 inch twin cam motor right now and here is where I am at. And if I should have compression releases put in these heads. I am also think to change cam choice to the new TW54 cam it seems to turn on sooner 2200 instead of 2600 like the tw55 I am going to using now. This is also going in my bagger FLHTCI (FLHX CLone) I was told this cam I am using now likes about 10 to 1.
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SBC ported Head chambers set to 84CC
JE 10.25 forged piston kit
Andrews Tw55 cam
Jims Hydrosolid lifters
Crane ADj. Pushrods
Jims Gasket set .036 head gasket, how much&nbsp\\;change when you use .030 head gasket instead
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Any Help Please
TIA

I would I have a 98" with 525 cams adn 10.1 compression and I'm glad I added them&nbsp\\;

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05 ultra black cherry and vivid black
98" Big bore
GMR Stage III CNC heads
Andrews 37
D&D Fat Cats
106TQ 107HP

Go to bigboyz website and use their calculator.&nbsp\\; I believe nightrider.com also has a similar cr calculator.

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Carl
CMA, Crossties Chapter (GA)
IBA 26580
'04 FLHTPX

Thanks for the tip that helps out. I really need to dial in on the for head gasket thickness. It look like I will need james .046 head gaskets or my compression with 10.25 pistons will get a bit to high. I always use good gas but I really did not want to get to much over 10 to 1 and this should get me at 10.07 to&nbsp\\;1.
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would&nbsp\\;anybody know now @10.07&nbsp\\;to 1 should I install compression releases?&nbsp\\;

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So your vote is to add the releases ?