mdabbott2009

here shortly ill be building a motor for my project truck. im starting with 6.0 form a 2000 truck has the nasty iron heads on it. instead of wasting money on fixing them im going to buy prc 2.5 5.3 heads i belive.

i need help with picking a cam for it and pistons. One i was looking at was a howards cam specs are

Cam Style:Hydraulic roller tappet

Basic Operating RPM Range:1,600-6,600

Intake Duration at 050 inch Lift:218

Exhaust Duration at 050 inch Lift:224

Duration at 050 inch Lift:218 int./224 exh.

Advertised Intake Duration:268

Advertised Exhaust Duration:274

Advertised Duration:268 int./274 exh.

Intake Valve Lift with Factory Rocker Arm Ratio:0.604 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio:0.612 in.

Valve Lift with Factory Rocker Arm Ratio:0.604 int./0.612 exh.

Lobe Separation (degrees):113

Camshaft Gear Attachment:3-bolt

would this work good in a dailey driven 6.0 with stockish stall and what not

thanks for any infomation

craigsix

i would be worried about piston/valve clearace with those heads and that lift on the cam.

craigsix

i would check into stage one 6.0 aluminum heads.

mdabbott2009

Thanks I'll have to do some investing. Kinda thought that was gonna be a problem with a set of flat tops

Camin00

Great point!

Do you know how to calculate this?

Camin00

The specs look great for lowend tq and over all power

If the piston to valve clearance is good

Should work fine with the stock stall

Since your going to have larger ports and big 6.0 cubs I would look into the tbss intake and 90mm throttle body. around 15rwhp more than the stock truck intake.

TXSZ66AVLANCHE

iTrader: (7)

PTV will be fine with that cam

mdabbott2009

i'll make sure to check ptv when putting togeather. Another question what about pistons what would you use for it. speed pro hyper or set it up and gets some mahle pistons? I'm trying to get parts list ready so when it comes time to do it ill just order all at one time.

Do i use ls7 lifters and tray or the crane replacement lifters?

1FastBrick

iTrader: (17)

How about about telling us what type of compression you would like to run???

With the 5.3 stage 2.5 PRC's the largest chamber is a 63cc. Your going to be around 10.9:1 compression ratio.

Do you want to be that high???

If you did the 6.0 heads with around a 70cc chamber you would be in the 10:1 range with a flat top piston. Like a factory LQ9

mdabbott2009

We'll I''ll have to run on 91 octane. That's the best I can get into other then e85.
I really don't wanna do that since I don't have flex fuel stuff.