Re: Really HIGH-WINDING B/RB engine ... ?
[Re: dOc !]
#717160
06/05/10 09:00 PM
06/05/10 09:00 PM
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Joined: Apr 2008
Posts: 1,141 Phoenix,Az.
hemicop
super stock
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super stock
Joined: Apr 2008
Posts: 1,141
Phoenix,Az.
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My opinion? For a boat I'd look for some lite rods & pistons, perhaps a good 440 crank with the usual mods, a Milodon oiling set-up with an accumulator and (believe it or not) a cam similiar to what Mopar ran in the old cop car motors but perhaps with hydraulic rollers. Top it off with some Edelbrock heads & a dual-plane intake & I think you'd be set. My thought here is to be looking for some steady, mid-RPM power that can run cool all day & not devour fuel like a race motor. After all the old, big Mopar cop motors would idle all day, run good top-end speeds on the freeways, stay cool and would do it for years (literally!) without any major work.
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: dOc !]
#717161
06/05/10 09:01 PM
06/05/10 09:01 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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What do you call "really high winding"?
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: Thumperdart]
#717162
06/05/10 09:08 PM
06/05/10 09:08 PM
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Joined: Jul 2008
Posts: 30,474 Florida STAYcation
dOc !
OP
The village idiot's idiot
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OP
The village idiot's idiot
Joined: Jul 2008
Posts: 30,474
Florida STAYcation
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Quote:
What do you call "really high winding"?
REALLY H-W ? ..... as good as I can get. In very short spurts MAYBE(got me thinking) near 9,000. REASON ? ...a single speed v-drive with a prop that MIGHT have 50-60% "slip" at lower speeds when you go WOT.
And as hc says ... you want something that will run all-day..... at maybe 3500.
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: dOc !]
#717165
06/05/10 09:11 PM
06/05/10 09:11 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Gotcha, I would definately consider 9,000 rpm`s high and I have no clue or answer in terms of engine combos but I`m sure they will be rolling in soon.......good luck.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: boatracer572]
#717166
06/05/10 09:19 PM
06/05/10 09:19 PM
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Joined: Jul 2008
Posts: 30,474 Florida STAYcation
dOc !
OP
The village idiot's idiot
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OP
The village idiot's idiot
Joined: Jul 2008
Posts: 30,474
Florida STAYcation
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VERY impressive boat there br572 ... is that really a 572 ? As I write this I have Bad Boats 2 in my VCR ....with Kyle Walker and Freddy Bray ! Mr P .... TALK TO ME on that combo !
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: dOc !]
#717167
06/05/10 09:31 PM
06/05/10 09:31 PM
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Joined: Sep 2003
Posts: 1,049 San Jose Ca.
boatracer572
super stock
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super stock
Joined: Sep 2003
Posts: 1,049
San Jose Ca.
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Its a 572" and I spin it to 8400 on every pass thats with 52% gears in the v-drive! High rpms have their place at the races ,but very un feasable at the lake.put a bigger gear in your v-drive instead and your motor will last mucccch longer. I have owned many flatbottoms and found that a 18 gear with a 15 pitch prop worked very well or a 15 gear and 16 pitch prop that will put you at 100 mph at around 7200 rpms, typical prop slip is between 25 to 30 percent. my lake boat(21ft Belmont) 468 bbc it spins 6500 and pushes that big boat 86mph with a 18 gear in the v-drive
Last edited by boatracer572; 06/05/10 09:40 PM.
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: boatracer572]
#717170
06/05/10 09:46 PM
06/05/10 09:46 PM
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Joined: Jul 2008
Posts: 30,474 Florida STAYcation
dOc !
OP
The village idiot's idiot
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OP
The village idiot's idiot
Joined: Jul 2008
Posts: 30,474
Florida STAYcation
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25-30% slip ? .... at WOT at big-speed ?? This boat is a Stevens shovel-nose hydro with (I think) a Thro-bred? v-drive ... gearing I think is 30-over(I don't think I can get any parts for it)... prop is a 12" 3-blade cleaver. I am just putting this together .... total newbie at this. I have fooled-around with a Hydrostream ... that had a habit of chine-walking at 80 mph !
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: Cab_Burge]
#717172
06/05/10 10:00 PM
06/05/10 10:00 PM
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Joined: Aug 2005
Posts: 4,102 Yes
sixpakdodge
master
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master
Joined: Aug 2005
Posts: 4,102
Yes
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Like Cab suggested, I had planned on building a 477" RB for my Horizon with a 4.5 bore Mega Block and a 3.75 stroke. In speaking with Herb McCandless, he said it could be done, but would be very, very hard on the valvetrain. He stated simply that it was not designed for that kind of RPM. If you do go through with this, you'll probably want to talk with these people: http://www.jesel.comFWIW, I ended up building a 528 (4.5x4.15)
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: Dads426]
#717177
06/05/10 10:19 PM
06/05/10 10:19 PM
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Joined: Nov 2003
Posts: 6,293 Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Big question would be what stroke you looking at Doc. The RPM will be in the abilty for the heads to flow, and the cam and valve train that would support it.... Long arm engine like a 4.5" stoke will take much more head than the same engine with a 3.75 stroke. High winding to me might mean something diff to someone else. above 8K to me is high winding. stoke stroke 440 with a set of fully ported B1's will get it done. Anything from the facory on this type build would be a waste of time and money.
Last edited by Bob_Coomer; 06/05/10 10:19 PM.
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: Really HIGH-WINDING B/RB engine ... ?
[Re: Dads426]
#717178
06/05/10 10:21 PM
06/05/10 10:21 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
My old de-stroked 383 use to turn 9500... light pistons and rods.... with a good balance... with nice heads
I don't think the old prostock hemis turned that high (maybe the destroked ones came close...)
Just telling you what I turned it to.... back then they were turning the PS much higher than that
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