Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   572 blower cam (https://www.offshoreonly.com/forums/general-q/358809-572-blower-cam.html)

getrdunn 02-04-2019 06:27 PM

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

rob vanharten 02-04-2019 08:21 PM


Originally Posted by getrdunn (Post 4671172)
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?

getrdunn 02-04-2019 09:10 PM


Originally Posted by rob vanharten (Post 4671195)


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.

mike tkach 02-04-2019 10:23 PM

my whippled 588s have hyd roller cams 262/[email protected] with 650 lift,easy on the valve train and north of 1200 hp and 1100 ft pounds of torque.imo your heads are too small for 572 inch engine and will loose some higher rpm hp.

rob vanharten 02-05-2019 06:59 AM


Originally Posted by mike tkach (Post 4671214)
my whippled 588s have hyd roller cams 262/[email protected] with 650 lift,easy on the valve train and north of 1200 hp and 1100 ft pounds of torque.imo your heads are too small for 572 inch engine and will loose some higher rpm hp.

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

getrdunn 02-05-2019 10:29 AM


Originally Posted by rob vanharten (Post 4671238)


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.

rob vanharten 02-05-2019 11:16 AM


Originally Posted by getrdunn (Post 4671288)


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!

adk61 02-05-2019 07:51 PM


Originally Posted by rob vanharten (Post 4671238)


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

My CNC heads are the catz azz for this combination!!!

getrdunn 02-08-2019 05:03 PM


Originally Posted by adk61 (Post 4671400)
My CNC heads are the catz azz for this combination!!!


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

rob vanharten 02-24-2019 07:25 PM


Originally Posted by mike tkach (Post 4671214)
my whippled 588s have hyd roller cams 262/[email protected] with 650 lift,easy on the valve train and north of 1200 hp and 1100 ft pounds of torque.imo your heads are too small for 572 inch engine and will loose some higher rpm hp.

Mike, what heads are you running?


All times are GMT -5. The time now is 10:36 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.