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A body BB to Hemi MM #3212730
02/11/24 11:29 AM
02/11/24 11:29 AM
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Mt Morris Michigan
mopar dave Offline OP
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Can anyone tell me if Hemi and BB wedge take the same motor mount? I currently have a BB in my A body using a plate and a pass side Schumacher conversion MM and will be installing a BME block Hemi. I understand the engine needs to set in the perfect position in order for the TTI headers to fit. I do plan on switching out the K for a QA1 K as well. So just trying to figure what motor mount i need for the pass side to get the measures 14" and 16" measured from frame to centerline crank each side. Thanks

Re: A body BB to Hemi MM [Re: mopar dave] #3212742
02/11/24 12:09 PM
02/11/24 12:09 PM
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Minnesota
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Dave, Hemi and wedge do not use the same mount. At least with factory blocks. I don't know if BME did something different or not?


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Re: A body BB to Hemi MM [Re: Hemi_Joel] #3212747
02/11/24 12:27 PM
02/11/24 12:27 PM
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Mt Morris Michigan
mopar dave Offline OP
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Do you know if BB and Hemi have the same block width? I dont see anything over on the Schumacher site.

Re: A body BB to Hemi MM [Re: mopar dave] #3212750
02/11/24 12:36 PM
02/11/24 12:36 PM
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Mt Morris Michigan
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Im now sure i will use a QA1 K and their lower control arms. This should make installing the hemi a bit easier. A gentleman over on B bodies has given me some very good info installing a Hemi into an A body. Thought i would see what i could find over here as well. I now know the master cylinder conversion block is not enough when using the Stage V covers. MC also has to be moved up about an inch or so. Anyone have any pics of the pass side inner fender mod to clear the valve cover and make easy removal? May have to speak with Schumacher to find out something on that pass side mount.

Re: A body BB to Hemi MM [Re: Hemi_Joel] #3212755
02/11/24 12:46 PM
02/11/24 12:46 PM
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Mt Morris Michigan
mopar dave Offline OP
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Was just over on the TTI site and foot notes say Schumacher has something. I will call them.

Re: A body BB to Hemi MM [Re: mopar dave] #3212758
02/11/24 12:51 PM
02/11/24 12:51 PM
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Plymouth, MI
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Originally Posted by mopar dave
Do you know if BB and Hemi have the same block width? I dont see anything over on the Schumacher site.


Same block, except Hemis have different motor mounts on them. Wedges have the ears, while Hemis have a little spot where 3 bolts thread in facing the skirt of the block on each side. The callies block I have has both the Wedge ears and the hemi pad on it, I think the BME blocks are the same way.


'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
Re: A body BB to Hemi MM [Re: mopar dave] #3212764
02/11/24 01:06 PM
02/11/24 01:06 PM
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Benton, IL.
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I put an aftermarket blocked Hemi in a 68 Dart. The outside dimensions of the new blocks will have differences from the originals. In the end, the ONLY way that I got it to fit was to buy an engine mount kit for the 'K', set the engine in and then tack the mounts together with everything in place. Then I removed the 'K', fully welded the mounts up and had it powder coated. Otherwise, a fraction of an inch or degree of measurement off anywhere meant it would not work. There is NO room for error.

Just my experience.


Master, again and still
Re: A body BB to Hemi MM [Re: mopar dave] #3212766
02/11/24 01:13 PM
02/11/24 01:13 PM
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Stuttgart, Arkansas
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Originally Posted by mopar dave
I now know the master cylinder conversion block is not enough when using the Stage V covers. MC also has to be moved up about an inch or so.

My buddy bought the new MC mount that moves it over further. I'll see if I can find that info again. It makes it a lot better.

Last edited by rickseeman; 02/11/24 01:13 PM.

2011 Drag Pak Challenger
Re: A body BB to Hemi MM [Re: rickseeman] #3212770
02/11/24 01:35 PM
02/11/24 01:35 PM
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Stuttgart, Arkansas
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Found it. Mike Roth at MR2 performance. 765-483-9371

MC offset.jpg

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Re: A body BB to Hemi MM [Re: mopar dave] #3212774
02/11/24 01:56 PM
02/11/24 01:56 PM
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Addison,IL
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Originally Posted by mopar dave
Im now sure i will use a QA1 K and their lower control arms. This should make installing the hemi a bit easier. A gentleman over on B bodies has given me some very good info installing a Hemi into an A body. Thought i would see what i could find over here as well. I now know the master cylinder conversion block is not enough when using the Stage V covers. MC also has to be moved up about an inch or so. Anyone have any pics of the pass side inner fender mod to clear the valve cover and make easy removal? May have to speak with Schumacher to find out something on that pass side mount.


I don't know what you mean that the standard conversion bracket won't work with Stage V valve covers. And in order to use that other bracket you would have to relocate the brake rod to make that work.
[Linked Image]

Re: A body BB to Hemi MM [Re: rickseeman] #3212777
02/11/24 02:04 PM
02/11/24 02:04 PM
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Mt Morris Michigan
mopar dave Offline OP
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Thanks guys. I may have to call TTI, QA1 and Schumacher to get this exact if possible.

Re: A body BB to Hemi MM [Re: OUTLAWSSAA] #3212778
02/11/24 02:06 PM
02/11/24 02:06 PM
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Mt Morris Michigan
mopar dave Offline OP
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The DR Diff MC relocating block has to be moved up about a 1/2-1" for the MC to clear the Stage V valve cover.

Re: A body BB to Hemi MM [Re: rickseeman] #3212779
02/11/24 02:07 PM
02/11/24 02:07 PM
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Mt Morris Michigan
mopar dave Offline OP
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Thank you for the other option.

Re: A body BB to Hemi MM [Re: mopar dave] #3212804
02/11/24 04:35 PM
02/11/24 04:35 PM
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Stuttgart, Arkansas
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Yes, but it's pretty easy. I believe my buddy said you turn the bolt around and the rod goes on the other side of the brake pedal.


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Re: A body BB to Hemi MM [Re: rickseeman] #3212834
02/11/24 05:57 PM
02/11/24 05:57 PM
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A collage of whims
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A collage of whims
When Hurst did the conversion back in the day, they spaced the K down from the frame rails.
Apparently the early cars were a bit evil-handling, as they later modified the steering arms.
That info, engineering drawings, and a couple photos of the rt apron cut & splice are in Jim Schild's Hemi A-body book.
Maybe some of those mods won't be necessary with the QA1 K-member.
The interference with the rt apron was at the bottom of the valve cover.
Greg Fernald @ SS/AFX, and Troy (member) should be able to help with questions/answers/tips.

Re: A body BB to Hemi MM [Re: topside] #3212854
02/11/24 07:29 PM
02/11/24 07:29 PM
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Mt Morris Michigan
mopar dave Offline OP
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I will have to get that A body book. Any idea how much spacer they used on the K? Do you know if there are any pics in that book that show inner fender mods?

Re: A body BB to Hemi MM [Re: mopar dave] #3212977
02/12/24 10:12 AM
02/12/24 10:12 AM
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S.E. Michigan
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As it was explained to me, the Original style shock tower mod was to just smash it in with a hammer.

Modern builds usually have that area cut out and a fabricated piece welded in.

Below is a link with a still-working picture of an original "clearanced" shock tower.

Link






Rich H.

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Re: A body BB to Hemi MM [Re: ZIPPY] #3213051
02/12/24 03:18 PM
02/12/24 03:18 PM
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Motor City
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Mine is in an E Body and not an A Body, but Indy does make a shock tower clearance passenger side rocker cover. This may or may not help in an A Body. I have never done it myself. I am able to remove the cover without any mods to the shock tower and in the factory mounting position even though front and mid plates are added. Hard to tell, but If you look closely there is a relief in the outside of the cover that does not interfere with any valve train internally.

rsz_20160414_201144.jpgIMG_8664.jpg

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Re: A body BB to Hemi MM [Re: 6PKRTSE] #3213079
02/12/24 05:32 PM
02/12/24 05:32 PM
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Mt Morris Michigan
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Ok, thanks for posting.

Re: A body BB to Hemi MM [Re: mopar dave] #3213139
02/12/24 09:30 PM
02/12/24 09:30 PM
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Temperance, MI
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I’m not that far from you if you wanted to look at mine.

IMG_0386.jpeg

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