Re: Another Hemi Block Question - Which Version?
[Re: ScottSmith_Harms]
#1796574
04/04/15 11:26 PM
04/04/15 11:26 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Scott, I am fairly confident that version of the hemi replacement block has the wedge ears and the normal hemi mount pads. I know Dudek ran one like that in the road runner.
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Re: Another Hemi Block Question - Which Version?
[Re: ScottSmith_Harms]
#1797317
04/07/15 01:13 PM
04/07/15 01:13 PM
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Joined: Jan 2003
Posts: 75,074 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,074
U.S.S.A.
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I was told that while the Hemi mount bosses are on them, they just aren't drilled and tapped for the studs which is an easy fix. It's not that easy , they aren't machined to dimension either.
running up my post count some more .
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Re: Another Hemi Block Question - Which Version?
[Re: JohnRR]
#1797535
04/07/15 04:22 PM
04/07/15 04:22 PM
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Joined: Mar 2006
Posts: 9,910 Eighty Four, PA
B G Racing
master
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master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
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I was told that while the Hemi mount bosses are on them, they just aren't drilled and tapped for the studs which is an easy fix. It's not that easy , they aren't machined to dimension either. I agree,even though they have the flat area for the hemi mount they may need to be machined to fit the mount or the mount cut to fit the flat area.The wedge style mounts on a hemi block was someones' wet dream.They may have had the hemi/wedge conversion kits in mind but gave no consideration for the exhaust system.As far as I'am concerned engine plate is the way to go unless your a purist doing a hi-end resto. We had wedge block that had the hemi mount area that constantly threw oil out at high RPMs.After a few seasons of frustration chasing the leak it was finally found.At the front corner on the drivers side the deck was drilled for the hemi oil drain back hole and the wedge gasket and head didn't cover it.These are just a few of Mopar screw-ups back in the days.
Last edited by B G Racing; 04/07/15 04:30 PM.
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Re: Another Hemi Block Question - Which Version?
[Re: ScottSmith_Harms]
#1800306
04/10/15 02:39 PM
04/10/15 02:39 PM
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Joined: Mar 2006
Posts: 9,910 Eighty Four, PA
B G Racing
master
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master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
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It took some checking and we found the M-5digit blocks were cast with no production date and many were the variety that had the 440 mounting ears that were removed.Check your block for a flat machined area above the oilpump mounting surface and machined areas where the 440 ears were.The quality of these blocks is unknown.Look also for porousity in the casting.These blocks were lighter than most Mega blocks and the coreplug holes are shallow.We found that 4 of these blocks have gone through the shop over the years,3 were able to check out and were bored 4.500 and were built to 528" street engines,one is still here.Goes to show we still can learn things if we take time to investigate.
Last edited by B G Racing; 04/10/15 03:05 PM.
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