T-Man 590 Cams

[Mercury]

My son has a 09 FatBob. Ness Big Sucker, SERT, V&H Short Shots.
72 HP 84 TQ

He's going 103 with some hand-me-downs.
From me:
Big Boyz ported stock heads off my 07
S.E. cast flats (look fine, gonna bore his stuff to them)

I made 96/107 with them using Andrews 54's & Rinehart 2:1's.
I also ran a .40 head gasket.

He wants to break 100 hp. I told him those pipes don't help.
He's gonna run .30 heads gaskets.
I told him I did 96 hp with a B motor, his A might do better.
He's thinking a little more cam. I know he'd have to change springs, but is 10.1 ~ 10.2 compression gonna be enough to run the T-Man 590's? His website chart wasn't nessesarily clear about it, it only mentioned 10.6 to 10.8 on a 95" to make it work. It's too late to call & it's Saturday. Anyone have any suggestions or advice?

Thanx!

[compressor#v]

Give TMan a shout, he'll get back promptly, with CR.

[beaureed445]

10.1-10.2:1 isn't enough for the 590. I'll work, but more compression will make more power. I ran that cam in my 103" build at 10.3:1, and it was ok. I bumped compression to 10.6:1 when I went 113" (same cam).

[Mercury]

That was my concern. I'm not real comfortable bumping compression towards high 10's with cast flats. I'm thinking the 54's like 10:1 and stay in the parts group that sorta compliment each other.
Seems like to run 590's, would probably need different pistons and springs, and that blows the low buck 103 outta the water.