Originally Posted by dedge
Here is a link to a cam that i think would be a good choice for me.it's not a "big" cam but it will improve power..tell me if i'm wrong please. http://www.holley.com/06605LK.asp
I'm not disagreeing that cam gurus like Ed and Jay are THE men to contact when you want to squeeze every last ounce of power from your combo – but I don’t think Dedge is anywhere near this point. I think all he wants is something better than his stock piece – a ’76 smog cam ground back in the days of the Jimmy Carter fuel crisis.
Dedge – you don’t need roller-rockers, and more than likely you won’t need pushrods – especially with the mild grinds you are looking at. (Check them for straightness by rolling them on a piece of glass.) The issue you could run into would be valve-float if your springs are not up-to-snuff. Of course – if the springs are bad, that could happen with your stock cam too. Most (if not all) cam manufactures will list a recommended spring. The last Comp Cam I chose (XE-262) was just on the edge of recommending a non-stock spring. (I left the stock springs in.) The “smaller” cams below that should work just fine with a stock spring (as recommended) if they are in good shape.
Anyway – I’m not a cam expert but I’ll “go out on a limb” here. As Jay pointed out – an RV or towing cam should be a very nice improvement – and the cam you’re looking at appears to be VERY mild – but should give you good throttle response with better low-mid range torque – and if your stock springs are in good shape it should work just fine. (What RPM do you want to turn?) The drawback for you is that it will NOT have any sound to it. The other cam you were looking at (the Bracket II) *appears* to be close to a Comp 268H cam I ran years ago – with a 218 dur. @ .050. on a 110 lobe center with a .468 lift. That cam was a great on the street (stock 289 heads.) Had a very slight lope.
As I said earlier, I’m currently running a (dual profile ) Comp 262-XE in my ’67 289. I’m satisfied with it’s overall performance. Even through a C4 and a 3.00 gear, it’s got good, stock-like low-end (no bogging), with very nice mid-range torque. I don’t rev it that high, but it’s advertised operating range is like 1800-5600, and it’s also got that “cam-chop” you’re talking about (through the automagic tranny…)
Remember that most of these guys here are pretty hard core racers – and that’s why you’re catching all the flak about picking a cam for sound.
That said… I’d be lying if I said “sound” wasn’t at least *part* of my decision-making process in picking a *street machine* cam. (I have no plans to race my ’67 at any track, so winning by a head-light bucket is not important to me.) But let me tell you. Nothing… and I mean nothing sounds sweeter than an American V8 rolling through the gas-station with that beautiful choppy idle. JMHO.... Good luck!