Alright I am working on putting my winter build together, this is what I have some up with. Feel free to make suggestions or tell me it won't work all together

heads ported and polished
jugs bored to 103"
SERT
SE adj. pushrods
SE-255 cams

These are the basics, I need suggestions on the second half of things.

Option #1
mill the heads down .010
SE flat top piston part #21996-07
gving me about 10:1 comp

Optiion #2
don't mill the heads
SE 10.5:1 piston part # 29144-08
giving me 10.17:1

If I am wrong please correct me and I am open to suggestions.

Thanks.

 

Are you planning on doing the machine work yourself?

If not, I'd suggest selecting a machine shop (HQ, Hillside, R&R, etc) and talk to them about what you want to achieve. Let them tell YOU how to get there. Listen to what they tell you and follow their recommendations.

One other thing.... FORGET the S/E cams! If you are getting professional machine work done, don't strap it with those cams.

 

I would strongly agree with Phil on this, best to let the porting shop choose the cam and help you pick the compression and piston to use. For instance I have a cnc ported head that we get 110-115 torque and hp with on 103" at 10.2 to 1 with one of our 525 bolt in cams and can go 10.8 to 1 and get even better numbers without pinging with a little bigger cam.

 

Phil and King, thanks for the info, I am going to have http://www.bigboyzcycles.com/index.php do my porting and cylinder boring. I have been thinking about doing the HQ set-up, but I am trying to keep this within a reasonable budget. So far I have got about $1300figured up, the HQ set-up is $1800 not adding SERT. The more I think about it I think I am just going to suck it up and pay for HQ to build me a 103" set-up. They seem to have a pretty good reputation, I have emailed Big Boyz with my ideas, but go no response so far. Do you guys have any suggestions on a MAP system other than the SERT?

 

Properly tuned, the SERT is hard to beat. If you get one of the HQ packages, they will be able to provide you a reasonably close SERT MAP for your build.