xjcamaro89

Anyone have any cam suggestions, im looking to put a new cam kit in a 1985 camaro with a 305 q-jet automatic trans, looking for a summit kit, any part #'s would be greatly appreciated, thanks!

Sonix

iTrader: (1)

compxe 256, or 262. They kit with lifters is $189, or you can get it with springs, retainers, etc, the "K" kit I think. I dunno how much$ that is though.

xjcamaro89

Everything that I keep reading about the 256 cam is that it is to be used in a 87 and up TPI car, would it still be ok to use in a carb car, and the 262 has a noticable idle, how much noticable is it, and which cam would be better for just a little bit over stock? Thanks!

Just to make sure, am I looking at the right cams

256: eBay Motors: COMP Cams SB Chevy Cam & Lifter Kit #CL12-256-4 (item 7934359326 end time Sep-03-06 04:26:14 PDT)

262: eBay Motors: COMP CAMS 262 XTREME ENERGY 350 SB CHEVY CAM/LIFTER KIT (item 270017645011 end time Aug-21-06 14:59:58 PDT)

mnorton

Sounds like you would like the 256 the best.

xjcamaro89

It would be fine to put the 256 in a carbed 1985 engine, even though the part description says for a TPI car?

five7kid

iTrader: (14)

You could put a 268 cam in it, even though it says "TPI".

The main issue computer cams address is reducing overlap so that the O2 sensor doesn't get confused at low engine speeds. It doesn't really matter if the computer is controlling a carb or some type of EFI. Beyond that, you just need to pick a grind that fits the rest of your package and intended use.

I had a Crane Compucam 2050 when I still had the 305. It ran fine, but you need headers, upgrade valve springs (accomplished with the heads in my case), and higher stall torque converter. Without exhaust upgrades, you aren't going to see a lot of gain with a bigger cam. Ditto with the air cleaner. But, go any bigger than the 262, and you're going to absolutely have to have a higher stall converter.

xjcamaro89

Well i already have headers, and open element air cleaner, so the 256 would be a good choice then? Thats all the mods we are doing. A cam and headers. Open element. Thanks guys!

billybob6110

this maybe stupid but im lookin for more horsepower to, umm whats a stall converter and whers it at?

five7kid

iTrader: (14)

As long as all you want is a small bump, it would be a good cam to put in it.

five7kid

iTrader: (14)

"Stall" is a characteristic of any automatic transmission torque converter. It is an inaccurate way of describing how it reacts to torque input from the engine and vehicle speed. If you keep the car from moving and open the throttle while the transmission is in a forward gear, the maximum RPMs the engine will go to is the "stall" of that converter behind that engine. A more powerful engine will "stall" the same converter at a higher RPM than you would observe in the "test" above. For instance, the converter I have behind my 350 now stalls at 2500 RPMs, but behind the 305 that preceeded it was only 2300 RPMs - the outfit I got it from estimated it would stall at 2000.

The stall speed is affected by the size of the converter and internal features of the converter. In general, a smaller diameter converter will stall higher than a larger diameter converter, but there is some overlap possible there by changing the vane angles of the turbine components in the converter.

The reason for having higher stall is to allow the engine to spin up to the cam/induction powerband. If the stall is too low, the engine will labor getting up into its powerband. Think of it as not having the RPMs high enough when letting the clutch out on a manual transmission car. Cam duration is a major player in the engine powerband, so you need to match the converter stall to the cam (just as you need to match the induction system powerband to the cam).

Sonix

iTrader: (1)

i'm a little late here, but when I said the "xe256, or 262", I didn't mean the one for computer controlled vehicles, I just meant the normal one.
Look harder.


But yea, either one would work just fine for you, but if you did have TPI, then the computer compatible one would be better.

xjcamaro89

OK, could someone really hep me out here, everyone is telling me something different. I have a computer controller q-jet 305, i need a cam that will give me a little better performance over stock, and that is computer freindly. I talked to summit and they gave me the part# for this cam- CCA-12-249-4 , if this one is ok, let me know, if any other suggestions, please provide part #'s so i can just go look at them, thank you!

Sonix

iTrader: (1)

the "computer" in an '85 q-jet controlled vehicle isn't a terribly intelligent or finicky one. Don't get all upset about that.

For those who don't want to follow that link, that cam is a 206/212, "249/260", .434"/.444" lift. That's the smallest cam available (except of course the peanut LG4 cam that is..
It'd work ok, better than stock, but you wouldn't notice any idle characteristic changes, or anything really.
Most people warn against "overcamming" a motor, and tend to err on the smaller side... I don't know, i'd rather go bigger myself.

I think you should go up one step, to the xe256. That's just my opinion though.

xjcamaro89

Is the xe256 a part number? Im trying to find it summit, or is the 256 one the durations of the camshaft, i just cant find that camshaft on summit, could someone please get me a summit part# for that camshaft? Thanks!

Sonix

iTrader: (1)

CCA-12-256-4