Thoughts on this cam for a SR engine 350 CID with 1.6 rockers, ported 113 heads 240 CFM at .550 and 2200 stall convertor? A lot of the cams I had been looking at have less lift, in the .505 area (with 1.6 rockers XFI Compcams?), more lift drew me to this cam:

Lunati 60121

Brand: Lunati
Product Line: Lunati Hydraulic Roller Tappet Camshafts
Part Type: Camshafts
Part Number: LUN-60121
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,800-5,800
Intake Duration at 050 inch Lift: 219
Exhaust Duration at 050 inch Lift: 227
Duration at 050 inch Lift: 219 int./227 exh.
Advertised Intake Duration: 270
Advertised Exhaust Duration: 278
Advertised Duration: 270 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.515 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.530 in.
Valve Lift with Factory Rocker Arm Ratio: 0.515 int./0.530 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Computer Controlled Compatible: Yes
Grind Number: VDSC-270
Quantity: Sold individually.

Camshaft, Hydraulic Roller Tappet, Advertised Duration 270/278, Lift .515/.530, Chevy, Small Block, Each

It's measured with 1.5 rockers, card is here: http://store.summitracing.com/instru...%2D60121%2Epdf

From the Summit page: http://store.summitracing.com/partde...D60121&FROM=MG

Is it to much?

 

cool, you are tearing in to it I assume! I am debating doing heads , and a lpe 219 cam , with mine! or if I should wait and see about making it a 383 then put the goodies on! I hate to do it 2 times! LOL! if that cam works well let us know how the build goes and take some pics please!!! Good luck!

 

That seems to be alot of advance in that cam. It's not that big a cam to start with.

 

Since the intake centerline is not listed, You can NOT tell how much advance it has.

Aardwolf -
That cam will work fine with a Super Ram as it's actually fairly close to the LPE 219. The Lunati has smaller intake lobe with less lift and about 10 degrees smaller on the seat timing (provided Lunati takes their seat timing specs @.006). The exhaust lobes are very close. The Lunati has slightly more lift and is 2 degrees smaller seat timing.
Will

 

That cam should work fine with the supperram, also the 219 cam or the ZZ-409 will work well. The cam you are looking at favors the exhaust side and may not work well as a straight up cam if you have good flowing exhaust.

 

I believe it's an excellent cam. Duration at .050 insures excellent throttle response, the LSA of 112 is right on target and valve lift is good and can be increased with a rocker ratio change.

Also, doing the math of the advertised duration vs .050 duration shows it has agressive ramps which is what you need for a street engine.

I vote a resounding YES!


Jake

 

do you think that cam is more aggressive than an lpe 219

 

According to the cam card it has a intake cl of 106. Lingenfelters is 112 on a 112 cl.
Doesn't that make the cam that he has picked out 6* out of the box?

 

The lift with 1.6 rockers works out to be .549/.565. That will work out fine with the SR intake, but I must say the advertised RPM range is a bit underrated. The cam will make power from roughly 2200 to 6000. If you want to run this cam competetively, I'd suggest a bump to a 2500 stall converter and a gear swap to 3.45s minimum, otherwise I'd look at a cam with ~214/222 duration for a more low-end setup.

On the other hand, it is a nice cam and looks like it will make roughly 350-380rwhp depending on how well everything is ported. This cam is also nice if you have future plans for forced induction/nitrous. It's really a tough call to say if you should keep that or go lower duration, but more torque usually beats SotP feeling than horsepower does.

 

Lingenfelter had said on their website many years ago that the 219 cam was designed to work hand in hand with the Superram..... I dunno if that is true, but it is what they said.

With that said, the 219 cam does seem to compliment the intake fairly well. Turns on when the superram does. Forum member Ralph used to run it on his 350 and considering his et's and traps, made over 400 HP with the combination utilizing AFR 190 cylinder heads and 1 5/8" headers. I think his best et was 11.6x @ 117 mph with a fairly tight 2800 rpm converter. Pretty stout for such a docile streetable set-up if you think about it.

I do recommend you loosen up your 2200 rpm converter another 400-600..... your driveability will still be great and the combination will really like it. 3.07 gears have proven to be just as fast as any other gear with those set-ups provided you have a decent converter.

good luck !

 

The 219 SR cam is actually recomended to be installed at 108 Intake CL but you can put it anywhere you want. You an install any cam anywhere you want, the lobe seperation of 112 degrees means they are ground on the same seperation and can be installed at any intake CL that makes sense. A rough rule of thumb is to subtract 4 degrees from the lobe seperation for the intake CL.

 

Why not the LPE219? It's proven over, and over again. Or are you just thinking outside the box. Are you thinking there is a better cam now since that 219 is at least 15 yrs old?