Comp Cams Magnum Camshaft
I have torn down my 350 engine that I plan to go through and rebuild for a good street motor in my 63 Chevy II wagon for reliability and fuel milage. I pulled the current cam in it that supposedly has low milage (around 50 miles) and was going to change it since I dropped the lifters and push rods but may end up keeping the cam and buying new lifters, push rods, springs and rockers.
The cam is a 12-211-2 Magnum, Duration at .050 is 224 and lift is .470. It shows the RPM range at 1,800-5,800. What do you think of this cam in this motor of mine being used in a street car? Too big or will it work fine? I also heard that I can use Rhoad Lifters when I go to buy new lifters instead of a comps cam magnum rocker, lifter and pushrod kit. What do you guys think on this?
I did find out the pistons in this motor are L2256 TRW's (Forged, Speed Pro's) .030 over. They are supposed to have 9.72:1 compression with 64cc heads but I have 75cc heads so that should bring it around 9.0:1 I beleive (that's if it has not been decked). The manifold I am going to be running will be an Edelbrock RPM with most likely a 500 or 600 cfm carb (I have not decided on this one yet).
All I am asking here is what would you guys do, keep the cam if it specs out good or buy a new one with lifters and everything? I hear lots of good things about Rhoads lifters on bigger cams in a street car but never had experience with them myself or driven a car with them.
Thanks!
Shawn-
Wrong combo! Help techinspector!
If you are looking for mileage you are going in the wrong direction,The RPM intake is just what it says,RPM! larger runners for increased fuel delivery,to get mileage you want an intake with smaller runners to produce increased low end torque and promote higher velocity at lower speeds,the cams discussed above will not promote fuel economy either.I am not really sold on the regular Performer intake either,you'll find tons of them on ebay and craigslist for $50.So lets look at this combo to get you going in the right direction,plug in these part#'s at www.summitracing.com Weiand 8125,Crower CRO-00904,Summit SUM-M08600VS .Hopefully Techinspector can run some numbers for you.