jacobsed

OK, I want to install a new camshaft and Intake while the motor is out of the car. Also going to replace the rear main seal but I'm not sure if it is leaking or not. Is a couple drops after every cruise worth it? It is the only thing I think can be leaking. If the manifold gasket or head gaskets were leaking wouldn't that be more noticable? Anyway, what camshaft and what other hardware should I replace while putting in the new camshaft? I have a 79 L48. Non original engine, it is actually out of a 72 Camaro and has less than 25K on it since the rebuild.

Thanks!

Fevre

To select a cam you need to know your comp ratio, head flow (or at least casting numbers and current springs), rear gear ratio, trans type (and stall speed for auto), intended use and since you are replacing a cam need to know that cam specs are and what type of change you want (more low end torq or more hp up top).

jacobsed

There is no way I can tell you what the comp ratio is.
Casting numbers off the heads is 3973487X.
I can't tell what the springs are.
3.08 gear in the rear end.
4sp manual (Borg Warner from a 78).
I want it to sound cool and have low end torque.

Thanks

MotorHead

Check the rear of the intake manifold for oil leak, up to CC XE268 and Performer intake.

billlambeer

you have to get a cam that is not too aggressive if you are sticking with stock springs, since if you do, it will snap them, so look at something with a duration at .05 thats like 268, and lift around .45, you can maybe go over a bit more, but not much if you are sticking with stock valvetrain, and this is all assuming its like a 350, like i would look at the comp high energy 268, make sure there isnt any note that says you need to replace stock valvetrain too!!! You need to replace the the lifters and the timing chain assembly also, and while your at it, i would replace the push rods since its only like 20 bucks.The oil thing is as much as its worth to you, if you want to watch the oil level, well then i guess its not a huge problem. If you want to find the issue you should just crawl under after your done cuising and try and find where the oil is coming from, that the best advice i got, has worked for me in the past. Good luck

Ganey

You don't state exhaust. HE268H is very good & will work w/ your stock valve springs. XE-262 w/ new valve springs. Get a roller timing set also.

jacobsed

I have true dual exhaust. Got rid of the stock style last year but still have the ram horn exhaust manifolds.

COMMANDER370

I just put CC 270H and Weiand Stealth on my 80 L82.Sounds good,performance wise i am not sure as i am still working on the car.all it does is go up and down on the lift