like the title says, does anyone know the specs for the stock cams which came in thirdgens? i know there are several different engines, not exactly sure which codes but they should all have relatively similar lift/duration. i think.

 

There's a link off the homepage that lists all the different cams with specs for these cars.

 

really? i couldnt find it. the technical info only tells me things like cr, hp, tq, production numbers, no cam specs. also, in the technical faq and whatnot, i couldnt find it either. could you maybe post a link to it?

 

https://www.thirdgen.org/mods3

stock specs are all the way at the bottom

 

so when they sell a cam and give you the lift specs, its assuming 1.5 rockers? i guess then the "aftermarket" .477 lift cam which came with my longblock really isnt much of a change. Guess we'll have to change it up come spring.

p.s. thanks for the link, i appreciate it. i cant navigate forums for the life of me.

 

The only aftermarket 0.477" cam I can think of is the COMP Cams XE268H-10, and that is quite a departure from stock. It's about as wild as you would want to go for your first cam upgrade.
Try it before swapping it. With good heads, intake, headers, etc., it should pull hard to 6000 rpm. I know from experience that even the L69 cam goes dead just above 5500 rpm.

 

Well when i bought the motor the previous guy had some some stuff to it, bored it .060 over with hyper pistons and put in what he claimed was a "wolverine" cam. he said the specs were .477 lift on int/exh, 112LSA and i'm not sure on the duration. however, i took a pick when i took the camshaft out to rebuild the motor and it had "EDEL" and some numbers on the end of it, makes me think its an edelbrock cam. now that i look back, i regret not changing the camshaft when i had the chance. i mean, i still have the chance cause its not in the car yet, but everythings been put together. i was trying to rebuild it as cheaply as possible, then found myself splurging on arp bolts and aftermarket/new parts to do the job right. ah well, i'll probably end up getting new heads/valvetrain next summr anyways. for some reason i thought stock cams had like mid .200 lift.

I found the pic of the cam i took, it says EDEL then 840341 and then randomly 210.

 

Stock specs = tiny by small... or put another way: Almost perfectly round.

 

well, according to the link that was posted, the stock cam's had over .400 lift. which isnt that far off from the aftermarket .477 cam, so they couldn't be perfectly round. unless they don't actually have that much lift...

 

However, your stock cam isn't listed. The only ones listed in that tech article are the "better" factory cams.

Regardless, going from .413" lift to .477" lift is a pretty big change. But, duration is more important.

I'd guess that your cam is an Edelbrock cam, which is basically a restamped off-the-self grind. The "210" is probably supposed to be "2102" or "2103" but the person doing the restamping got the end of the stamp over the center hole. Those are Performer cams, and don't have anywhere near .477" lift.

But, that's just a guess.

 

really? .064 inch more lift is significant? thought it had to be more than .1 to make a descent difference. according to summit the 2102 has: .420in/.442ex. with 278/288 degrees dur. and the 2103 has .442/.442 with 288/288.

This is the first time i've built an engine (im only 19) so i'm now doing my homework when it comes to valvetrain and getting everything to work together (optimize). I take it this cam is pretty mild then? any thoughts?

My engine is actually a 1969 block, so i don't know what the original cam specs were, but regardless i'm comparing it to an early thirdgen cam. i guess the two are pretty similar? i'm trying to go for something a little more agressive. I know you're supposed to pick the intake last, but i want to keep my air-gap so i'm going to try to get my cam/heads to work with it instead. I'm aiming to get max power around 5500rpm.

sigh. I knew the previous seller would lie to me. I'm going to measure the cam when i go back home for the winter break, just to make sure.