Cam ???s

[VENOMOUS1 RACING]

Guys, since I'm staying n/a I am fixing to cam this monster! I am familiar with cams and speccing my own custom grind but need some general info I couldn't find in search. Really need the factory cam specs duration, lift and lobe separation angle as well as tallest lift ballpark without ptv clearance issues and no flycutting. Comp 918-921 springs? Pushrods etc. Don't want an off the shelf grind but specs on some aftermarket cam specs would be cool too. Thanks in advance for any help.

 

[VENOMOUS1 RACING]

And yes I will spec this cam around my factory heads that will be extrude honed porter most likely and maybe a slight head/intake milling.

 

[SHU-DOG]

I think its hard to beat the GTS ACR race car cam. I thought someone here had put one in along with some head work?

Maybe check the forum search?

OR

Maybe they will pipe in.

Sorry for no specifics

SHU

 

[alexspop]

This is the only info I have.

Valve Timing-Exhaust Valve
Closes (ATC) 36.5°
Opens (BBC) 88.5°
Duration 305.0°
Lift @ valve 0.554


Valve Timing-Intake Valve
Closes (BTDC) 86.5°
Opens 23.5°
Duration 297.0°
Lift @ valve 0.554
Valve Overlap 60.0°

 

[rottenronnie]

Any cam in these engines (custom or off-the-shelf) without supporting head work won't provide much in the way of a power increase.
The o.e.m. heads drop-off fairly quick after the factory cam's .544" max. lift.

I based my own custom grind on the Viper Coupe cam and was ground on a wide l.s.a. for TQ.
Mild specs- [email protected] ... works well with the truck's weight (5600 lbs.) and auto tranny.
Lopey idle, good vacuum, etc.

Ronnie