I ran a search but came up with nothing.
But i am looking for a cam that will run best with stock intake and heads(88 iroc 350 TPI A4). I've tried looking through this forum but when it comes to cams and lift i get confused.


I do appreciate any input, later!

 

Hey Josh,

As you're starting to discover, picking the right cam is as much art as science - I've been a car nut since I was about four, & I'm still feeling pretty tentative about picking the cam for my GTA.

Selecting the correct cam involves knowing most of the important info about the car, like:
As you can probably see by now, once a car departs from stock, picking the "right" cam becomes a one-off, custom proposition - but there are a few basic guidelines that can get you in the ballpark, & you can narrow it down from there:

As a rule, it's been found that cams with a tighter LSA have a "choppier" idle, & make more absolute power, but are generally less streetable. If your car is computer-controlled, it's probably a good idea to have an LSA in the 112˚ or 114˚ range, although some are using lower, like 110˚. (The tighter the LSA, the tougher it'll usually be to tune.)

Finally, here is a real quick, brief table that may give you a bit of an idea of how these factors work together. Or, you might find (like I have) that this table is actually a bit better. Don't know how much experience/knowledge you have but magazines like CHP can explain the basics (also has contact info for some of the cam companies).

Hope this helps a bit. The best suggestion I can give you is to take a piece of paper, make sure you have answers for all of the questions I've listed above, & then call three or four camshaft manufacturers & see what they have to say - they probably won't all give you the exact same specs, but I'd bet money that they'll all be within a fairly narrow range. You can also browse forums like this one, thirdgen.org, or CarDomain for cars that are similar to yours, & see what cams they're running - lots of them will be willing to tell you how well they like the cam they're using (you can see in this thread that I've done just that).

Final word - Do NOT automatically assume that "bigger is better"! When it comes to cams, the reverse is usually true, & the most-common mistake that people make when choosing a cam is to pick one that's too big for what they're really trying to do. When you've narrowed it down to 2 or 3 cam profiles, do yourself a favor & throw out the biggest one. As counter-intuitive as it seems, you'll be happier with the better idle & driveability of the smaller cam (speaking from experience as the former owner of an over-cammed daily-driver truck... ).

Good luck!

 

Companies like Comp Cams and Crane has specific cams for 350 TPI cars...ive seen them in the catalogs. If your looking to keep the stock intake I would look into those cams...I remember seeing one that didnt even require computer tuning/chip burned.

 

Thanks for the info rumble and rice.

 

Good advice there. Here is the stock cam profile for 1988 L98 Camaro/Trans Ams.

.415/.430....207/213..... 117 LSA

Looks like just about ANY cam is going to be more powerful. Don't go overboard and you'll be fine. The best book I've read about cams is John Lingenfelter's How to modify Small block engines book. Look for it on Ebay.

 

I called comp cams with my info and they suggested a 206/210 .450/.480 and 101LSA

That doesn't seem much different than stock

 

S-A came out with a new book around december called "SBC Cams and Valvetrains" and it is VERY informative.

 

I've put that cam in 2 different cars,
really steps up the bottom end torque and the power band kicks in about 700rpm earlier,

this is a good for tpi cause its a bottom end intake not a top end,

I put it in a 91 SD car and the tune was way, way off, gonna take me awhile to get it right, still hasen't passed emmisons test where I live,
usually maf is alot more forgiving with cams, the other motor I put it in will be up and running in the next 4 weeks, just waiting for a couple parts I got coming

 

That LSA had better be a typo - and even if you meant a '110' LSA, I'd get a 2nd, 3rd & 4th opinion, unless you're planning on throwing out the stock ECM...

Let me put it this way - even a 106 LSA is going to have a really "choppy" idle & be difficult to tune w/ TPI, I can't even imagine what a 101 LSA would be like! (A 110 LSA can work, but it'll be a bit harder to tune.)

I forgot to mention in my earlier "book" that I've gotten bad info before when calling a cam company, so it's always a good idea to get several suggestions.

Again, good luck.

 

Yea,im sure he meant 110 lol. It seems like a narrow LSA but the cam isnt that big either. Throw some 1.6 RR's on it and some 3.55's in it and let the honduh spanking commense!

 

May be hard to believe but I had a custom engle cam 215/215 .512/.512 with 1.6 comp magnum roller tipped rockers on a 114 LSA in my 91 and it ran 102 with edelbrock shorty's and 3.73 gears. It sure dosen't look like the right cam on paper but it's hard to argue with the trap! Also that was on the stock speed density tune with 48 psi fuel pressure. By the way that cam and those rockers are on a shelf in my garage if you are interested. Good sleeper cam, Idled like stock at 700 RPM.

 

I know guys that run 98mph in bone stock G92 305's

that cam is pretty impressive in the 305 I just put it into,

shooting for a low 13, 12's on the spray