Alright guys it lookd like its time to rebuild a motor for the 70 Estate Wagon I have. I have a new SP 400 trans for it and will more then likely be going in in the next week or so. I might as well geta motor in there at the same time or dang close to it. I have a 70 Block the will need a bore over to 30. The crank will be polished and I have the bearings for it and have the gaskets as well. The heads will be stock valve size and have a valve job done. I plane to put a New B4B on it and rebuild the Q-jet. BUt I need a cam. I want something that the old lady can get in and drive. I also want to be able to get some more power out of it when pulling. I might drag the local rice but not push the motor over 5500rpm. I need you guys to help me out with the cam. I would call TA or Poston and ask but am looking for some real world use of a cam.It gets new duel 2 1/4 exaust on it this week if all goes right. Also the car has a 3.42 posi in it. The cam has to have lots of low end and mid range in it. Thanks Doug :3gears:
Take a look at Crower's Compu-Pro #1. Hydraulic, mild timing, low down torque. I have one in a 2400# roadster with 462" BBB and it'll snap your neck when the tires bite. Would be an excellent cam for a tow rig.
Sorrry, no experience with it, but TA does offer an "RV" cam. Also, You may want to send Brad Conley a PM - He's got a roll-back truck with a 455" in it that he uses to haul around his cars with.
I used to use the TA RV12. I ordered it by accident. This cam made lots of low end torque, but that grunt went away too quickly in my car. Probably because of my converter and gears, plus I was looking to keep passengers plastered to the seats for longer. I grabbed third a time or two with it, though. That cam also idled as smooth as butter and I pulled 19" Hg with it at 800 rpm. Very nice cam all in all, just wasn't what I really wanted in my car. I am giving it away, but it's already spoken for, sorry
if your #1 concern is low end to mid torque i would stay with a cam similar to the stage one cam or a step up such as the 113, they will pull hard to 5000 rpm's, but if you want it to pull like a fraight train to 5500, i would go with the 118, but it idles about 800 but you have a s/p trans so no problem there, also with your gears your towing rpm should be above 2500 rpm, so you would be in the power band of the 118. just remember the smaller the cam the more low end torque, and the bigger the cam, the more top end horse power, and the torque curve moves up in rpm as the cam gets bigger. i my opion you would give up just a little low end torque and economy, in turn you would have gobs of power when you nail it. also , have a proformance valve job done along with bowl blending and smoothing out the combustion chambers. just my 2 cents Kelly
