SUPERPOWERS

iTrader: (1)

ok, here is my situation. I have an 82 corvette. 3000 lbs. 4.11 gears, T56. I have a 416 LS3 stroker. Forged eagle crank, H-beam rods and Diamond forged pistons. L76 intake, Holly 90mm TB, SLP 85mm MAF, 25% underdrive pulley, 1.75"/3" long tube headers, dual exhaust, through 3" high flow cats, x-pipe and flow through mufflers. The heads are L92, hand ported, stock valves, patriot dual springs. Flow 342/215 @.60 and 351/219 @.65. The comp ratio is right at 11.3 to 1.

The car will be mainly street driven, but might see the drag strip and road course occasionally. I am a hard street driver, I take off hard and stop hard. I want a choppy idle w/o too much in town low rpm bucking, and to be able to cruise nicely at 75mph and get around 24-26 on the highway. I will also be doing a flex tune for now and all E85 in the future.

I have already paid for a cam in a package deal, so please don't tell me to go to such and such person. I need specs please. I barely know what I am talking about. So far I have had a few people tell me this...

244/250 620/620 @112+2 (my engine builder)

240/250 612/612 @114+2 extreme high lift lobe 3376 intake 3377 exhaust (comp guy)

238/252 ??/?? @114+3 (forum member)

244/248 612/615 @112+2 XER lobe (different comp guy)

So far I am leaning towards #2. Still pretty choppy and will avoid some reversion and get me to 6600 rpm

I only know what people tell me, so please tell me if any of this is BS. I would like around 630 flywheel hp, but I could be out of my gord!

Patrick G

iTrader: (14)

I think most of the successful L92 builds you'll find are running less overlap than the cam you listed. All of the cams listed have 19-23 degrees of overlap at .050". While you can always run more, there seems to be diminishing returns in 416s once you exceed 15 degrees of overlap at .050" with L92 heads. The high flow of the intake valves at low lifts make them very sensitive to exhaust reversion.

Ed Hutchins and Rick from Synergy have combos like this making well into the 5xx rwhp range with cams with much less overlap. Just don't expect to get very many people to offer up their winning combinations for free.

In my opinion, all your cams are about 6-8 degrees of duration too big, especially if you don't want any low rpm bucking.

firefighting1101

iTrader: (48)

its worth it to pay the money and get your cam spec'd by this man ^...he did mine for the l92's and even my engine builder was happy with the cam spec, and he is a very hard man to please when it comes to cam selection. and the cam pat g spec'd for me was significantly less overlap then all the ones you have listed.

SUPERPOWERS

iTrader: (1)

like I said earlier. I got a deal on a heads/cam package (from a forum sponsor) so I can't do that.

WKMCD

iTrader: (2)

PM Sent

Old SStroker

You admit that barely know what you are talking about, but you are trying to pick from a bunch of cams yourself. Do you see a problem here? I surely do!

You need to listen to the right cam person and trust his judgement. The problem is finding the right person to listen to. Not all of the best are sponsors here, nor even visitors.

I suggest some of what you have heard and post is Bovine Scat.

DIY cam picking is a lot like DIY brain surgery...and often about as successful.


Jon

SUPERPOWERS

iTrader: (1)

I hear Jessica knows the right people

I was very nieave to how this whole process worked. After talking to a few people I am more enlightened. I will call my builder and tell him to pull the cam out of my order. I will get ahold of someone who I know will get me the right cam for this motor.

WKMCD

iTrader: (2)

Progress not perfection...

SUPERPOWERS

iTrader: (1)

I am definitely a work in progress...

Stang's Bane

iTrader: (22)

Everybody was at one time, at to some extent everyone still is. I know personally, the more I learn, the more I realize the more I have yet to learn.

If you go through a day and don't learn something, you have wasted a day