I am bout too install some vortec heads on my 350. I am just waiting on my edelbrock intake too show up on my doorstep. It is a roller rocker motor. A it also has headers,3in flowmaster and 3.73 gears. I am lookin for a cam for over all performance not too crazy, but a good mild one. any help with a good brand and product number would help. thanks

 

I used the ZZ3 (ZZ4) cam in my stock-headed L98(check sig for other mods); made 320 lb/ft & 240 hp @ wheels.....passed California emissions.....14-15 miles per gallon, 90% around town, regularly driven with heavy right foot. There might be something more advanced though, now. I installed the ZZ3 cam in 1995(?).

 

i also have ram air,adjustible fuel rail and just bought the 6al box not too long ago. But did you have all your goodies on it when it was dynoed?

 

I too am running the ZZ4 cam on my L98. I've got high flow cats - SLP 1.75 headers and NO emissions. We hooked it up at my buddy's shop just to see, and it woulda passed a sniffer.

I gotta say it's a great cam for a long runner set-up.
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I was wondering that too. I would've expected it too be a little higher than 240. Not MUCH more, but there are SO many variables involved. Still, I've seen similar set-ups around 260 at the wheels. regardless.......

.....I'd imagine there's a LOT more power under the curve than the 240/rwhp shows. The long tube set-ups don't shine with peak numbers.

 

so was there a noticeable difference with the cam? I am also looking at the lt4 hot cam,but not sure what all i would have to change on the heads

 

That dyno pull was on a so-so tune, about 13.8- 14.1 A/F ratio at WOT. But everything else was installed. 240 RWHP certainly doesn't sound really impressive, but when you drive the car, and it tries to get sideways in second, the numbers become secondary.
I have a LSRacing Chips tune now that appears to be much better, according to my scan tool and the improvement in drivability.
I'll soon be running AFR Eliminator 195's with Comp Cams XFI268 H13 cam, 1 3/4" headers; I chose the Comp cam over the LT4 HOT cam, after I had purchased the LT4 cam. Reading the message boards convinced me to exchange cams. Too much lift for stock heads, I think, with XFI268.
Bill

 

I think the hot cam would cause you more headaches than it's worth, especially if you don't want to have a custom prom chip made. For your goals, I'd recommend either the ZZ4 cam, or the Comp cams #08-501-8. Either of these cams is supposed to work great with the stock programming. The only thing you'd have to do is upgrade your valve springs since your stock springs won't be able to handle the lift. Get a set of Comp cams 981-16 springs with matching retainers, and you should be set. They're 1.250 diameter, so they'll drop right in the stock spring pockets. I'd also recommend putting new valve seals in while you have the springs off. Might as well while you're right there. Use the positive type seals on both the intake and exhaust valves. They provide more retainer to guide clearance and are a lot less prone to leaking than the umbrella seals.