Stage V engineering Hemi conversion heads
#2643101
04/09/19 08:08 AM
04/09/19 08:08 AM
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Joined: Jan 2012
Posts: 1,541 USA
hudsonhornet7x
OP
pro stock
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OP
pro stock
Joined: Jan 2012
Posts: 1,541
USA
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Any opinions on Stage V conversion heads? What else do you need to make them run?
Last edited by hudsonhornet7x; 04/09/19 08:29 AM.
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Re: Stage V engineering Hemi conversion heads
[Re: hudsonhornet7x]
#2644250
04/12/19 02:23 AM
04/12/19 02:23 AM
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Joined: Aug 2003
Posts: 43,099 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,099
Bend,OR USA
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Any opinions on Stage V conversion heads? What else do you need to make them run? Don't even think of doing that Every thing I've read on here about them has been bad about them
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Stage V engineering Hemi conversion heads
[Re: hudsonhornet7x]
#2644265
04/12/19 03:07 AM
04/12/19 03:07 AM
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Joined: Jan 2007
Posts: 10,125 A Red State
SNK-EYZ
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I Live Here
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Posts: 10,125
A Red State
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There was a time when Hemi blocks weren't available so there was a need, not so much anymore.
A friend built one of the conversions back in the early 90's (he still has it).
The RB Block isn't nearly as strong in the bottom end as a true Hemi block, no cross bolted mains on a standard RB Block.
Kayse can't keep up at all now. lol
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Re: Stage V engineering Hemi conversion heads
[Re: SNK-EYZ]
#2644345
04/12/19 10:33 AM
04/12/19 10:33 AM
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Joined: Aug 2006
Posts: 614 Michigan
Get-X
mopar
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mopar
Joined: Aug 2006
Posts: 614
Michigan
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There was a time when Hemi blocks weren't available so there was a need, not so much anymore.
A friend built one of the conversions back in the early 90's (he still has it).
The RB Block isn't nearly as strong in the bottom end as a true Hemi block, no cross bolted mains on a standard RB Block. Not trying to stir the pot, but where today are Hemi blocks available that aren't $8k KB blocks or used up OE blocks for $6k+ in need of repair??
'65 Belvedere '68 GTX '57 Dodge pickup
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Re: Stage V engineering Hemi conversion heads
[Re: Get-X]
#2644355
04/12/19 11:03 AM
04/12/19 11:03 AM
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Joined: Jan 2003
Posts: 17,838 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
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Posts: 17,838
S.E. Michigan
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Slim pickin's out there.
But now that the supply is low, folks are cashing in and who can blame them...
This one sold yesterday (not mine)
https://www.ebay.com/itm/NEW-MOPAR-PERFORMANCE-DIRECT-CONNECTION-426-HEMI-ENGINE-BLOCK-NEW-/264270095224?item=264270095224&vxp=mtr&ViewItem=&nma=true&si=tyiY2mkj9Xkdqmp63dg2bCg8VL0%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
Rich H.
Esse Quam Videri
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Re: Stage V engineering Hemi conversion heads
[Re: ZIPPY]
#2644363
04/12/19 11:20 AM
04/12/19 11:20 AM
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Joined: Jan 2003
Posts: 3,704 MICHIGAN
DynoDave
master
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master
Joined: Jan 2003
Posts: 3,704
MICHIGAN
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Slim pickin's out there.
But now that the supply is low, folks are cashing in and who can blame them...
This one sold yesterday (not mine)
https://www.ebay.com/itm/NEW-MOPAR-PERFORMANCE-DIRECT-CONNECTION-426-HEMI-ENGINE-BLOCK-NEW-/264270095224?item=264270095224&vxp=mtr&ViewItem=&nma=true&si=tyiY2mkj9Xkdqmp63dg2bCg8VL0%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557 Damn. But, if it's what you "have to" have, then I guess that's the going price. Which brings us back to the OP's question about this conversion.
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Re: Stage V engineering Hemi conversion heads
[Re: ZIPPY]
#2644379
04/12/19 11:43 AM
04/12/19 11:43 AM
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Joined: Aug 2006
Posts: 614 Michigan
Get-X
mopar
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mopar
Joined: Aug 2006
Posts: 614
Michigan
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Slim pickin's out there.
But now that the supply is low, folks are cashing in and who can blame them...
This one sold yesterday (not mine)
https://www.ebay.com/itm/NEW-MOPAR-PERFORMANCE-DIRECT-CONNECTION-426-HEMI-ENGINE-BLOCK-NEW-/264270095224?item=264270095224&vxp=mtr&ViewItem=&nma=true&si=tyiY2mkj9Xkdqmp63dg2bCg8VL0%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557 I don't blame them at all, if I had one and was selling it I would get as much for it as possible.
'65 Belvedere '68 GTX '57 Dodge pickup
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Re: Stage V engineering Hemi conversion heads
[Re: Get-X]
#2644507
04/12/19 07:10 PM
04/12/19 07:10 PM
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Joined: Feb 2006
Posts: 604 TN
1DGEMAN
mopar
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mopar
Joined: Feb 2006
Posts: 604
TN
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So what if you used these on a 400 block? Stronger bottom end,larger bore and if you stroked probably a lighter piston. Any thoughts?
Real Men shift for themselves
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Re: Stage V engineering Hemi conversion heads
[Re: 1DGEMAN]
#2644519
04/12/19 08:21 PM
04/12/19 08:21 PM
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Joined: Jul 2004
Posts: 3,804 Arlington, Texas
bobby66
master
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master
Joined: Jul 2004
Posts: 3,804
Arlington, Texas
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So what if you used these on a 400 block? Stronger bottom end,larger bore and if you stroked probably a lighter piston. Any thoughts? Probably hard to find an intake for that combination.
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Re: Stage V engineering Hemi conversion heads
[Re: hudsonhornet7x]
#2645263
04/15/19 08:36 AM
04/15/19 08:36 AM
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Joined: Jan 2003
Posts: 13,351 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
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The way block availability is now, I think the conversion kit is a viable option. If I was in the market, I'd definitely be looking into it.
Anyone remember Steve Magnante's (from Hot Rod magazine, B-J Auction, etc.) red hemi dart? That was a Stage V conversion on a 440 block if I'm not mistaken.
Lets be honest here...most people building a hemi aren't looking to make block breaking power. Less than 600 hp is what most seem to be after and a stock block will last a long time doing that.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Stage V engineering Hemi conversion heads
[Re: RATTRAP]
#2645382
04/15/19 01:00 PM
04/15/19 01:00 PM
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Joined: Nov 2007
Posts: 21,814 Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,814
Kirkland, Washington
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[quote=an8sec70cuda] Why build a Hemi If your looking for 600 or less The first answer would be the guy building a hemi clone.
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Re: Stage V engineering Hemi conversion heads
[Re: RATTRAP]
#2645394
04/15/19 01:46 PM
04/15/19 01:46 PM
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Joined: Jan 2003
Posts: 13,351 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
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The way block availability is now, I think the conversion kit is a viable option. If I was in the market, I'd definitely be looking into it.
Anyone remember Steve Magnante's (from Hot Rod magazine, B-J Auction, etc.) red hemi dart? That was a Stage V conversion on a 440 block if I'm not mistaken.
Lets be honest here...most people building a hemi aren't looking to make block breaking power. Less than 600 hp is what most seem to be after and a stock block will last a long time doing that. Why build a Hemi If your looking for 600 or less While I agree w/ your thinking (mine makes 4 digit HP), there are a lot of car show and cruiser guys that just want the look. Or have just always wanted a hemi. Back when they were available, I bet the "little" 465 hp crate hemis outsold the 600+ hp 528" crates 10 to one.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Stage V engineering Hemi conversion heads
[Re: Cab_Burge]
#2645629
04/16/19 08:12 AM
04/16/19 08:12 AM
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Joined: Jan 2003
Posts: 13,351 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
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I think a good set of B1 or a set of B1-MC heads on a good wedge block will out perform and out run a hemi conversion set up I agree 100%, but some people just WANT a hemi. I was all set to build a B1 engine before I found a real good deal on a hemi top end package. Glad I did, b/c I really just wanted to have a hemi...even knowing a B1 combo like mine will likely be faster.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Stage V engineering Hemi conversion heads
[Re: hudsonhornet7x]
#2645636
04/16/19 08:35 AM
04/16/19 08:35 AM
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Joined: May 2004
Posts: 12,383 Taxes & Virus's R-US, NY
Dragula
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I Live Here
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Taxes & Virus's R-US, NY
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My engine builder did one a while back. It makes good horse power, and if the block is cheap enough and in good shape, its probably worth it. What is nice now a days that people don't mention is the proliferation of stroker kits, AND the lower end girdles kits.....This I think makes it worth while investment, with the right engine builder. I say that because if I remember right, You have to drill out and re-tap the head deck holes to a larger size. Plus the girdle can be a pain to setup, and getting the right length head bolts/studs can be a pain too. Its all time consuming. More so with all the little oddities this combo brings.
And even if you built a wedge as suggested, everone has one, and they suffer from the same HP limits as the Hemi and need a girdle.
Heck even one of the big magazines built one, and it made 680hp in a street car if I remember......We saw one at the drags last year making passes. I do not recall what it ran. Looks almost like a regular Hemi unless you really are looking at it.
For somthing to tool around town in, and enjoy, I would do it. Hemis are damn cool. The girdle will really help along with a rev limiter. Don't look for Mopar to save you by bringing anything back.
I always wanted to do one of these in a low deck....I here FHO was tooling up to do a low deck, so if he comes out with an intake, man that would be cool...A 400/512 stroker low deck Hemi!
Last edited by Dragula; 04/16/19 08:41 AM.
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Re: Stage V engineering Hemi conversion heads
[Re: Dragula]
#2645647
04/16/19 09:00 AM
04/16/19 09:00 AM
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Joined: Feb 2006
Posts: 604 TN
1DGEMAN
mopar
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mopar
Joined: Feb 2006
Posts: 604
TN
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I thought about the low deck 512 hemi conversion for a NSS 68 Barracuda but then spent my money on NHRA D/S 340 6pack which is still in progress. I think the Hemi would have been cheaper.
Real Men shift for themselves
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