Turbo camshaft?

slow'n'steady · Post by **slow'n'steady** » Sun Nov 26, 2006 10:15 pm

i am just wondering how to go about chosing a good camshaft for say a, 383 twin turbo.

i am probably just going to go with a Summit Racing brand, but dont know what the differences are in the cams other than the power range. Is that the only difference in the cams, when it creates the best power?

http://store.summitracing.com/egnsearch ... 4294908216

i like the SUM-1105 personally.

emod19 · Post by **emod19** » Sun Nov 26, 2006 10:38 pm

Crower will custom grind a cam to your needs. They ground one for me for a turbo Buick V6 and it was awesome.

Steve

DreX · Post by **DreX** » Thu Nov 30, 2006 3:39 pm

emod19 wrote:Crower will custom grind a cam to your needs. They ground one for me for a turbo Buick V6 and it was awesome.

Steve

Specs?? If want to share.... :thumbleft:

emod19 · Post by **emod19** » Fri Dec 01, 2006 12:01 am

Intake 290 duration, .472 lift
Exhaust 280 duration, 442 lift
Lobe separation 112 degrees

The intake and exhaust specs are reversed when compared to a NA camshaft.

Steve

DreX · Post by **DreX** » Sat Dec 02, 2006 12:09 am

emod19 wrote: The intake and exhaust specs are reversed when compared to a NA camshaft.

Why is that?

BTW, Thanks for the specs :thumbleft:

emod19 · Post by **emod19** » Sat Dec 02, 2006 1:18 am

The lower lift and short duration on the exhaust side increases the velocity of the exhaust gas exiting the port for better response from the turbo.

Steve