Has anyone every ran a cam shaft that is different from factory specs with the stock EFI?
Would like to run something like a rv cam if it will work, I have done this on a sbc with a throttle body. Just wondering if anyone has tried it, I will be building a new engine in the near future.

 

Are you looking to build a new engine with an aftermarket cam? Or looking to swap an aftermarket cam into your current engine then rebuild it later on?

 

I have an aftermarket cam in my 87 Comanche and in my 99 Cherokee both on stock fuel injection

 

Will be building a new enginge when I find one to build, gonna keep driving mine and then do a motor swap. That way I have less down time.

 

Have any idea what the specs are on the one in the 99? I would like to have something that helps make more low end torque, I even want to go with a aluminium head from edelbrock, they claim its rated to make more hp and torque just bolting it on. I read what the gains are but I forgot, they a pricey about 1100 bucks.

 

That's the specs for the one in my 99. The one in my Comanche was recommend by 5-speed and I believe he said he used it in his 99. It's a SK68-115-4 from comp cams.

 

https://www.jegs.com/i/COMP-Cams/249...115-4/10002/-1

 

I dont know whether its any use to you, but the stock pre-97 cams have peak torque at 3000RPM, and I believe some earlier XJ had peak torque at 2500

 

Please don’t call and ask comp cams for a RV cam they’ll probably hang up on you lol

 

I used that one in my 98 but same difference. Gained gas mileage and power. Couldnt complain.

 

I have heard of this aluminum head from Edelbrock and how pricey it is. I know you will get more hp and lose some weight as well. Other than those, anymore advantages?

 

They claim dont hold me to these numbers been a little while since reading it, 20hp and like 30ft lbs of torque just by installing it. Its suppose to flow better with that beeing said, a engine is like a air pump the more air you can get in and out the more power it will make. If you going to be doing other things like a hotter cam, header better flowing exhaust, or maybe a stroker bottom end you could see way more than this. I think it would just be a good platform to build from.

 

I just wish they weren't so dang expensive. I think they were around $1500 when I looked last and that's what I spent on all the parts to build a stroker. I guess if you have a bad head and need a new one you're looking at $500 so $1500 isn't as bad in comparison, but still a lot of money for me to swing right now.

 

Did you buy a kit to build your stroker, or did u shop around to get everything. If it was a kit where did you get it.

 

Kit from clegg engines