Hello, I was wondering what some of you think about this cam: PowerMax
HMV-260-2
Cam Specifications
Degrees Duration @ .050 Int./Exh. Degrees
204 / 216
Advertised Duration Int./Exh. Degree
260 / 272
Lobe Separation
112
in the L69. I would be changing the stock valve springs over to the summit spring kit at the same time. How would this cam compare to the stock cam in the engine. It's just a basic L69 w/ performer intake, 1.5 roller rockers, holley 4776c, all emissions equipment removed, hollowed cat, turbo muffler, open filter with extreme lid (cowl hood as well) So nothing intensely modified. I'm looking for some more mid range, would I gain it but then loose top end? Thanks guys

 

Anyone?????

 

That's not a good match. I'd suggest a COMP High Energy 260 if you have headers.

 

I don't have headers, factory manifolds. You think I should just leave this setup alone and run with it? The cam is free it's in another motor I have, and I could take care of some oil leaks while I was at it.

 

try if dont like it change it back...

 

IfThat being the case, install it 4 degrees retarded, and don't be too surprised when it's all done at 5200 rpm. You'll find some midrange torque this way. Don't install it dot-to-dot, because it has 5 degrees of advance ground in.
Get a 3-position timing set, and use the 4-degrees-retarded position.

 

I realize that cam will run out of steam at around 5200, but do you think that it would even be worth all the hassle of changing it? I was looking for more low into mid pull, but I wasn't sure if this is really even going to do anything in the way of a gain whatsoever. Currently it pulls well all the way to 5500 from mid range. I was also thinking of waiting (next year) put some headers on and go with something like the performer / summit grind k1102 .420/442 cam or one step bigger. I would like to get some lower 1/8ths (low 9's) down from mid 9's, and also get some more streetable torque. Maybe I'm just wishing in one hand.... lol

 

5500 is about what I expect from a stock L69, based on the few I've driven.
The stock cam is 202/208-114.5 at 115, .403/.415". So your intake lobe isn't much better, plus is closing 7 degrees sooner. In an 8.6:1 LG4, that'd be a good thing, but L69s are 9.5:1.
Your 416 heads don't want or need a dual-pattern cam. If you have them cut for 1.94" intake valves, which is a good thing, then you might have use for a dual-plane.
For now you'd probably do best to just step up your rear axle ratio.
With the COMP High Energy 260, it should also be installed 4 degrees late. Then it'll give you a bit more low end, and a bunch more mid-range, with a little more top end. It would still like you to go up one ratio in the rear.
If you have 3.73:1 gears, consider getting 4.10:1 gears.