silverado2000

Brand Lunati
Manufacturer's Part Number 55008LUN

the cam below with 1.75 rocker arms would this be to much cam for the stuff in my sig?





Part Type Camshafts
Product Line Lunati Hydraulic Roller Tappet Camshafts
Summit Racing Part Number LUN-55008LUN

Cam Style Hydraulic roller tappet
Basic Operating RPM Range 3,000-6,500
Intake Duration at 050 inch Lift 237
Exhaust Duration at 050 inch Lift 242
Duration at 050 inch Lift 237 int./242 exh.
Advertised Intake Duration 298
Advertised Exhaust Duration 301
Advertised Duration 298 int./301 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.595 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.595 in.
Valve Lift with Factory Rocker Arm Ratio 0.595 int./0.595 exh. lift
Lobe Separation (degrees) 112

fasterthenyou

I think it might be a little much...but I also dont know what you are looking for as far as streetability.

silverado2000

dont care how it drives on the street going for all out drag truck that will be on the street every now and then.

Chevy Cowboy

iTrader: (5)

Doesnt seem to big for a 6.0, might be getting close though

fasterthenyou

Well then if thats the case Id say stick with it and get a decent stall converter...

EDIT: Which you already do....

Preston129

iTrader: (3)

Any work done on those 243s? I'd plan to flycut the pistons, PTV clearance might be an issue.

silverado2000

the heads are stock as far as i know. and when is pvc a issue lift wise ?

Preston129

iTrader: (3)

It's more so duration numbers that get you into trouble with PTV, and I'd start getting worried with anything above 235 on int or exh side. Just for comparison, the MS3 cam has the exact int/exh duration numbers and Texas speed will tell you it won't fit in stock heads without flycutting. That's also pretty much what everyone on LS1Tech runs into also.

Also, with a cam that big I would really want to work the heads to get as much out of the cam as possible. I have a smaller cam and even I think I'll be leaving a lot of horsepower on the table without at least a CNC job on my 243s.

silverado2000

I plan on getting heads before December . Just time and money but thank you that's Good information so stay around 235 and I won't have any worries . I do have aftermarket pistons in the truck i'll have to check how deep the valve reliefs are .

Preston129

iTrader: (3)

If you plan on milling the heads that'll come into play also. When I saw your sig about flat top pistons I figured you had the stock bottom end but if you've got dished or relieved pistons that will help. 235 is just a rough ballpark from what I've seen having PTV clearance, don't take that to the bank though. All very easy to check when you've got the heads off however.