[mn65bis]

I have a 66 Chevelle and were rebuilding the 396. Summit forged engine kit with small dome, heads are 1966 closed chambered oval ports, the intake is a stock cast iron Holley, factory manifolds with 2.5 exhaust. 4 speed, 3.31. either a 3310 or 750 double pumper carb.

I have 2 cams available to use that are on my shelf. One is a

LUN-60203 Hydraulic flat 1800-6,200 227Exhaust at 050 233 Duration at 050 inch Lift227 int./233 exh.Advertised Intake Duration268Advertised Exhaust Duration276Advertised Duration268 int./276 exh.Intake Valve Lift with Factory Rocker Arm Ratio0.542 in.Exhaust Valve Lift with Factory Rocker Arm Ratio0.554 in.Lobe Separation (degrees)110

Or a Comp solid roller
11-770-8 Cams Xtreme Energy Camshafts-11-770-8 Mechanical roller 2,200-6,200Intake Duration at 050 inch Lift236Exhaust Duration at 050 inch Lift242Duration at 050 inch Lift236 int./242 exh.Advertised Intake Duration274Advertised Exhaust Duration280Advertised Duration274 int./280 exh.Intake Valve Lift with Factory Rocker Arm Ratio0.639 in.Exhaust Valve Lift with Factory Rocker Arm Ratio0.646 in .639 int./0.646 exh.Lobe Separation (degrees)110


Would this roller even work in the 396 with the manifolds and small cubes?
Thanks for any input

 

[SWHEATON]

I have a 66 Chevelle and were rebuilding the 396. Summit forged engine kit with small dome, heads are 1966 closed chambered oval ports, the intake is a stock cast iron Holley, factory manifolds with 2.5 exhaust. 4 speed, 3.31. either a 3310 or 750 double pumper carb.

I have 2 cams available to use that are on my shelf. One is a

LUN-60203 Hydraulic flat 1800-6,200 227Exhaust at 050 233 Duration at 050 inch Lift227 int./233 exh.Advertised Intake Duration268Advertised Exhaust Duration276Advertised Duration268 int./276 exh.Intake Valve Lift with Factory Rocker Arm Ratio0.542 in.Exhaust Valve Lift with Factory Rocker Arm Ratio0.554 in.Lobe Separation (degrees)110

Or a Comp solid roller
11-770-8 Cams Xtreme Energy Camshafts-11-770-8 Mechanical roller 2,200-6,200Intake Duration at 050 inch Lift236Exhaust Duration at 050 inch Lift242Duration at 050 inch Lift236 int./242 exh.Advertised Intake Duration274Advertised Exhaust Duration280Advertised Duration274 int./280 exh.Intake Valve Lift with Factory Rocker Arm Ratio0.639 in.Exhaust Valve Lift with Factory Rocker Arm Ratio0.646 in .639 int./0.646 exh.Lobe Separation (degrees)110


Would this roller even work in the 396 with the manifolds and small cubes?
Thanks for any input

===============================

Well just curious why the large dif in cam choice,your going fairly mild ft hyd to soilid roller with approx 10 deg more int/ex duration and from mid 500's to mid 600's on lift,those 2 cams are diff animals in MHO.

Anyway,the lunati cam is was better suited for your gears/stock ex man etc then the solid roller is,will the roller work yes but not optimal match for motor setup /car sertup by a long shot without headers/more gear/ etc.

But with .650ish " gross lift on the solid roller you better chk piston to valve clearance or you coiuld run into issues esp if block/heads were decked flat for rbld.

With given cam choice given the Lunati is the right choice for your 3.31 gears running stock ex manifolds etc as would any cam close to the same profile as the lunati is.

Scott

 

[mn65bis]

Thanks Scott,
I needed the assurance from someone who knows what all those numbers mean. Camshafts are not my area of expertise. Im trying to keep costs down. The Lunati is in a 496 we have with low miles. I'll be sure to look it over real good before we use it. I had the Comp roller sitting around to use in the 496 and figured I'd make use of the Lunati but wanted to make sure of my plans.
Thank Again.

 

[mr 4 speed]

X2 on using the 60203 in your 396 :thumbsup:

 

[OLDED]

The 60203 is in my Elky and I like it for all around sound, low speed torque and shifting at 6,000. It works great with the same basic heads and pistons you have - 063 heads, and .060 over (408) small dome pistons hooked to a 400TH and 3:31 reag gear. I did a lot of searching and asking questions before I picked it and have not been disappointed. Use the proper springs to get the best out of it. Have fun!

 

[grovey]

you know you need the factory groove turned into either cam, right ? why not buy a new cam, and get it turned at the factory ???

 

[mn65bis]

Thanks for the help, the 60203 will be going in, if it's still good.
Tim,
I stumbled across that info on an older posting here a while back. Thanks for watching my back.

 

[kettbo]

Dave,

Again, if a 66 block, you need the oiling groove cut into the cam's last journal and the right cam bearing set

 

[novadude]

Personaly, I'd go smaller than both on such a mild stock engine.

 

[Kevin R]

I ran the 60204 in my 396. 390 closed chamber heads 10.25-1 compression, 5 speed 3.73 gears. Ran a best of 12.95 @ 107. Very good street combo

The 60203 should work great with your gearing.

This is what it sounded like. 2 1/2" exhaust and flowmaster muflers.

http://www.youtube.com/user/kreuvsisnell#p/u/11/_lPyLPrmPq8

 

[The Old Reliable]

There are those people that could literally "destroy an anvil with a feather", so with that said upfront,

we have never had an experience with a Lunati cam that was less than excellent, from installation forward. :thumbsup: