[TheBusher]

I am looking at building my engine this winter/spring, and was looking at also getting a stroker billet kit (along with a bunch of other goodies!)on VT's website. The lowest compression ratio I can find on there is 9.5:1. Is that low enough for a supercharger, cause I've always heard 8.5-9.0 is ideal for a supercharger.

[drgnracin72]

what kind of supercharger are you going to run. 9.5 with a centrifugal blower will be perfect, you dont want low compression with them, as for turbo and twin screw though, youll want 8.5-9.0 with them

[TheBusher]

I was planning on a KB. So is 9.5:1 too high with a KB then???

[drgnracin72]

yeah youd be better off going with 8.5, a stage 2 head plus a 18-20 cc dish in the pistons should do plenty to get that compression down low enough.

[MustangMatt96GT]

not optumal. You could put SVO heads on there that would have a NPI size combustion chamber and get down less than 9.0:1 but that for the heads and intake is like 3 grand by them selfs! You could also just keep the stock stroke with forged rods, crank, and dished pistons that would make it optimal!

[drgnracin72]

i think you should do the higer compression, with the centri blower, till make more top en power (where you want it) and it will make for a faster car. kb are over rated and are a band aid for low compression. stick with the centri if ya want a faster car.

[TheBusher]

I was planning on getting VT stage 2 heads, crower stage 2 or 3 (haven't decided yet) blower cam, crower springs and retainers (titanium), I was also thinking about crower valves (any recommendations would be nice).

Also what the difference between 44.5mm and 45.5mm (+1mm), and 36mm and 37mm (+1mm)???

Any recommendations on stroker rotating assemblies??? I would prefer billet because it is stronger. Eventually I plan on making a ton a power (700+ rwhp).

[drgnracin72]

if thats the power your wanting, regular forged parts will be fine. bllet stuff is needed if your wanting over 1000

[drgnracin72]

Originally Posted by TheBusher Also what the difference between 44.5mm and 45.5mm (+1mm), and 36mm and 37mm (+1mm)??? .

what are these numbers for?

[TheBusher]

Originally Posted by drgnracin72 Originally Posted by TheBusher Also what the difference between 44.5mm and 45.5mm (+1mm), and 36mm and 37mm (+1mm)??? . what are these numbers for?

Sorry, it's for the valves...

http://www.vtengines.com/store/index...roducts_id=110

http://www.vtengines.com/store/index...roducts_id=111

http://www.vtengines.com/store/index...roducts_id=108

http://www.vtengines.com/store/index...roducts_id=109

[MustangMatt96GT]

Those are for the size of the valves. And it might help you out with a blower, but they are expensive to gain only 20 HP tops. And well dont buy the crower stuff from VT I orders the titanuium valvesprings and retianers Aug 17, 2007 and have yet to recieve anything. They keep blameing it on crower. But havent offered me a refund or a discount or anything.

And dude im telling you go the centri way!

[drgnracin72]

centri si the way, just go with whatever valves come in the head, theyve been researhed and proven to work fine with the combo. i wont ever order form vt again, i had problems when i ordered my heads from them

[TheBusher]

If I get something besides a KB it will be a TT setup. What is an ideal TT compression ratio???

[drgnracin72]

8.5-9.0

[TheBusher]

Originally Posted by drgnracin72 8.5-9.0

So, any suggestions on a good rotating assembly that will put me at 8.5-9.0? Or would it be easier to purchase the parts seperately?

[drgnracin72]

anything with a dish around 15 or bigger, with a bigger head will put you real close to what your wanting. im running a 21cc dish piston with vt stage 2 heads and i am right around 8.5:1

[TheBusher]

Thanks! Now this may be a dumb question but, are blower cams also good for turbos, or not? If not, who makes a good turbo cam???

Another dumb question but, how does having a bigger head lower compression?

[MustangMatt96GT]

Bigger Combustion chamber in the head lowers compression. There is more space to combust in.

[drgnracin72]

a blower cam isnc ompletely different form a turbo cam, i would contact a place like vt or some place that will custom build a turbo cam for you

[TheBusher]

Right on, thanks guys! I love this forum!