i have a 71 442 with a 455 and i want to swap the cam for something more high performance, but i've heard that in doing that i could cause other annoying problems such as a lurching idle and many others. So i was hoping to get some advice from someone who has had good luck with high performance cams. thanks a lot
Tom

 

i have a 71 442 with a 455 and i want to put in a high performance cam and valvetrain, but ive heard that doing that leads to some lurching while idleing as well as other problems. I was hoping that someone who has had success with could point me in the right direction. thanks a lot
Tom

 

What size cam did you put in? Most performance cams are not going to idle smooth. You also need to run more intial timing than stock. Also is this a auto trans? If you put in a lot off cam, and while in gear it does this, you may need a higher stall convertor?

 

Well i havent decided what size cam yet, so it still has the stock one in right now. and my timing is a whole different issue, i'm starting to think that the genius i bought the car from thought he had a little more knowledge than he acutally did because there are some pretty "mickey mouse" fixes etc. throughout the car. Also yesterday i bought a Munice 4 speed for it so i'm pretty sure that i'll be putting that in the car. thanks a lot for replying.
tom

 

Try something like this: http://store.summitracing.com/partde...2&autoview=sku

This should put you in the performance ball park, and not give you any drive-ability problems. Stick with Crane, their cams are top notch. Stay away from Comp cams, they're better set-up for Chevy. Good Luck!

 

I merged you threads for you...

 

thanks a lot everyone who replied, you were a really big help
Tom