Guys I know the cam thing has been discussed at length many many times, but was wondering if you could give me some advise on an off the shelf grind for my new motors. I am currently in the middle of building some 572”, 8.5-1 engines with ProMaxx 317 heads that Valeko had worked on the exhaust side and now chamber porting as well. They flow 375 at 650. I have super chiller intercoolers and BDS 12-71 blowers with quick fuel 1050 blower carbs. I will be installing Daytona Sensors ignition as well. I plan to set them between 8-10 pounds of boost. I currently have 254 264 @50 and .632 .632 lift on a 112ls. My exhaust is a dry Imco Powerflow system. If you guys could pick me an off the shelf cam to maximize these engines to their full potential, what would you pick? I feel like my cams are decent for the project, but if I buy new bump sticks what should they be? Also I am using 1.7 rockers.

Jim probably mentioned to run 1.8's on the intakes with that cam. Just a guess. Lol... Your gonna make a chit load of power either way. Is Earhart gonna dyno? That's a good proven cam and easy on valvetrain. Would be nice to have a little more lift if your going for max hp but.... Did Jim say what he ended up with int CC's. If I recall mine ended up at 347.

We are just working on the combustion chambers this go around. My budget is being stretched as it is.... the chambers ended up at 128cc. I am going to leave the cams as well. I really think they are going to be very close to being ideal. I was at More Power on Saturday for about an hour and I think I will have Dick Dyno them as well. I am starting to think I could hit 1000hp. What do you think?

I think you'll hit 1,000 hp on the conservative side. Big cubes and big blowers with chillers makes for some awesome power. I'm glad your going to more power. Much closer to you also. Dick and Duane great guys. I practically grew up there living only a couple miles away years ago and have a great relationship with them. 6-8 lbs of boost you thinking? Let me know when your going to dyno if you don't mind. I'd like to come down and can help set up etc and get away for a day or two. I've got to bring some engine parts down at some point anyway. I'm happy and excited for your builds. Hope your drives feel the same. lol...

Yes we are going to set them up somewhere between 8-10 pounds. I am really looking forward to the process. I have never had an engine dynoed, and never actually seen a engine dyno live before. Dick has been very helpful! I would have no problem with you coming down and taking part in it!! Who nows maybe they will sniff 1100.....:). The drives are not going to appreciate it, going to be building a spare until I can upgrade to something with some more structural integrity.

Just keep updated. You will have a riot and great experience however being your first time you'll likely chit your nest thinking that your hard earned engine gonna scatter on dyno right before your eyes. I'll be there for sure. I don't see 1,100 out of the question what so ever with that boost. I would think you'll see that near 6,000 rpm with a nice torque curve.

Kinda funny we flipped builds. I started out NA to SC and back to NA due to current trans and drives. You started NA and went SC. It is what it is.

Are your QF's 4150 or 4500 - 1050's.

4150’s. That’s exactly what I am afraid watching it Grenade on the dyno!! We ring them out in the boat all the time but it feels different on the dyno... Are you on FB?

I nearly worded it the same as you regarding not giving two chits or thinking twice while in the boat. You'll be fine and look forward to coming down. Not on FB. One thing I tend to stay away from. Looking forward to selling out so I have more time for this never ending hobby. Can't wait to see that monster on the dyno and listen to it grunt. Back in the day we'd spend late nights out there. Some before they had to muffle outside. Talk about some wicked sounding pulls. I'll pm you my ph number.

Yes to make maximum power the heads are a little small! But the check book is screaming already.

I can only imagine. You'll be fine. You mentioned chamber CC's but not intake runner CC's. If I had to guess I would say around 340 or so with the flow numbers you posted. Your cam will work well with heads at the rpm I would imagine you'd like to run at WOT. (Under 6k). I see do see where mike is coming from but... I'm trying to think back if it was smitty that did a 548 build or there close to it with a 315 head and made near 1,000 hp. Have to do a search, it was a few years back.

Mike was that a custom grind? Power plant.

Not sure where the intake runner ended up, Jim just let me know what they were flowing. Yes I think I will be setting the rev limiter at 6,000 at least on the dyno and maybe a touch lower in the boat depending on some more professional feedback. I am going to be adding stud girdles as well. Valve train stability is huge and once again shaft rockers are not going to be in the budget this go around. If they made a solid 1000hp I would be very excited with that!

just curious what you end up with. I've seen you selling sets with good results. Good job.

Mike, what heads are you running?