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Looking for some suggestions on this cam

6

68fastwilliams

Member
Hoping you all can give me some direction, I was just given a Comp cams 292H cam (here are the specs 35-330-3 - Magnum? Hydraulic Flat Tappet Camshafts) and lifter kit as a gift. My car has been on the back burner for a few years now so the Crate 351W I have is still sitting on its stand untouched. I'm thinking that this is too much cam, what is your opinion? How would you build the engine for a hot street car? BTW the car is a 4 speed and will likely run 3:73 gears.
 
Not sure about the cam specs but I would aim to have 325-350 HP for a fun car. A strong cam is a real attention grabber too.
 
I'm gonna bet that crate engine is equipped with a roller cam. I could be wrong though. I'll never mess with anything other than hydraulic roller cams myself though.
Bill
 
Shoot this over to Ryan (monkeystash). When I was looking for heads he had all sorts of knowledge on cam/head combinations.
 
when I built my first small block (306) I had a 268H and it was pretty mild. I later swapped to a Crane cam with specs close to the 292H (I looked them up on their website) http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=873&sb=0
I had a high stall converter and 12.5:1 CR. The engine had ported cast iron heads with Chevy fuelie valves and a 750 Holley and Torker II intake. I had a Mallory duel point dizzy also. It ran like a scalded dog. It was a lot of cam but I think it would be fine in a 351. I have a very similar cam in my 429
 
i would be worried with stock heads its going to be too much. Unless you are planning to open the heads up and run a bigger intake so it cant breath a little better.
 
"lethal289" said:
i would be worried with stock heads its going to be too much. Unless you are planning to open the heads up and run a bigger intake so it cant breath a little better.
Click to expand...
agreed, it has to be a part of the whole package
 
Well it's no roller, it's a truck engine that I picked up cheap. As it sits it has 8.5:1 comp ratio, and some very crappy heads. I have a line on some ported RPM heads and would like to use a RPM airgap intake with a 650 DP. Might need some new slugs as well as the current ones have a pretty big dish.
 
The cam you are looking at is very similar to the Lunati I ran in my stroker for a little while.
http://www.lunatipower.com/Product.aspx?id=2426&gid=292
Sounded awesome, made good power but suffered from low vacuum and you can forget about idling around a parking lot in first gear.

After the oil pump cratered, I went with this cam http://www.lunatipower.com/Product.aspx?id=2361&gid=297

I love it. Makes wicked power, sounds awesome, i can tool around in first gear all day[nb]t-5 trans[/nb] long without lurching and the power brakes actually work. Don't let the advertised duration fool you, this is a tough little bastid. Gotstang ran it through engine analyzer pro along with several other, including a couple mother-thumpers and it was pretty much a no brainer.

I would like to have gone with a roller but did not want to spend the money.
 
It could be a good option, but not without a higher compression ratio and better flowing heads, which you mentioned doing. 244 degrees duration at .050 is a lot and wouldn't work so hot with 8.5:1. If you replace the pistons you'll have to rebalance the assembly too, which might lead to an entire rebuild. This free cam might cost you a lot, lol!
 
As Ryan said, 244@ 0.50 will be a dog unless you get the comp up to the 11+ range. Look for something in the 220 range with more lift (.52-.54 or so).
 
Agree with everyone. I have an XE262H in my stock 351w and it has a fairly smooth idle and good vacuum. Its the only cam I've had in the car, so no real comparisons to a bigger cam. I am pleased with it though, given it still has stock heads and compression ratio.
 
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