5.7 / 6.1 location preference?

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HemiDenny

HemiDenny

HDK Suspension
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just finishing up mounts for a 5.7 / 6.1 install and was wanting any input regarding engine location.

currently mated to a small block 727....I kinda like what I see with the Hemi moved forward appx 1/2" giving a little extra firewall room and steering shaft clearance. I also like the Hemi shifted slightly to the center....so zero notching is required for the alternator on the 6.1 I'm using.

I presently do not have any kind of adapt plate between the Hemi and the 727....anyone know the thickness of the required plate?

suggestions or comments appreciated
 
HemiDenny said:
just finishing up mounts for a 5.7 / 6.1 install and was wanting any input regarding engine location.

currently mated to a small block 727....I kinda like what I see with the Hemi moved forward appx 1/2" giving a little extra firewall room and steering shaft clearance. I also like the Hemi shifted slightly to the center....so zero notching is required for the alternator on the 6.1 I'm using.

I presently do not have any kind of adapt plate between the Hemi and the 727....anyone know the thickness of the required plate?

suggestions or comments appreciated
Click to expand...
If your saying a 1/2 fowared from the bell housing, I would say it would be easier to move the transmission fowared with the engine, reworking the trans mount instead of a spacer plate between the engine/transmission.... unless I am missing something..
 
HemiDenny said:
just finishing up mounts for a 5.7 / 6.1 install and was wanting any input regarding engine location.

currently mated to a small block 727....I kinda like what I see with the Hemi moved forward appx 1/2" giving a little extra firewall room and steering shaft clearance. I also like the Hemi shifted slightly to the center....so zero notching is required for the alternator on the 6.1 I'm using.

I presently do not have any kind of adapt plate between the Hemi and the 727....anyone know the thickness of the required plate?

suggestions or comments appreciated
Click to expand...
>> According to PHR eng. swap book and Bouchillion,(they sell) you need 1/8" spacer between hemi/trans. This because flange is 1/8 further-back than sbm's. :eek:ops:
 
I speaking of moving the engine/ trans forward 3/8" plus the 1/8" spacer

In the 66-71 Hemi builds I have moved the combo forward up to 3/4" to clear blower motors, heads, ect to get the Hemi low enough to fit under the stock flat hood
 
I am of no help here. I haven't had a stock fire wall since before I test fit my hemi the first time. I do know thisyou have gobs of room to go forward if you are running an electric fan.
 
mancini sells a offset flexplate for the swap that requires no spacer between the motor/trans... Thats what I used, however, they appear to be sold out currently...
 
Re - Motor forward. - I'm gonna take a guess that the reason you would prefer the motor to be forward is not because of the "front/back" position on the K frame - but actually that the motor is on a significant tilt at the front, thus "crowding" the firewall?

I have just experienced the same issue...and its down to the TTI adapters.

Check it out and let us know if its the same case with yours.

-----------------------

As far as creating more room from the right inner guard, removing .5" from your drivers side TTI adapter height will both drop and centre the motor.

Get back to us on the "tilt" issue.

PS - FWIW I didn't need to use a bell housing adapter plate..once the TTI adapter mounts were "massaged" into providing a decent location.
 
no tilt issue that I see ....98% for crowding the firewall. added benefits of that little 1/2" push forward that I see is steering column/head interference becomes a negated...and of course a there is little more room in the tunnel area. If I used the (66-71) Hemi platform utilized for the under the stock flat hood...I can drop the front another 1/2".....maybe that would be the way to go. That platform however requires the Wilwood Pro spindle for the geometry....I better look at that next time at the shop....maybe a combo!.....thanks Rat!

I am not raising or lowering the Hemi/trans when I move it forward. The Milodon pan is appx 3/8" over the rack (with my K) not sure about other packages.....can go a little higher.

BTW...did you see the RH drive K/package I recently did for a Charger in Australia?...I will send pics if you e-mail me. this was a no motor mount build, the owner is installing a big cube (66-71) Hemi/auto with a motor plate

hemidenny@rocketmail.com

thanks all for the input....I know you guys have done all types of these new gen Hemi builds and I was hoping to get any concerns addressed or helpful hints on what you would like to see.

Denny
 
i'd suggest making sure if you move things too much you keep the headers and/or exh manifolds in mind too. and that starters need extended reach down under there. i'm not sure if the extra 3/8 will affect that area.

i like what you are doing though, trying to make it easier for these swaps. less fab work by the customer = less time in the barn workin on the car. :D

denny not sure if you have seen this page:
http://www.hotrodlane.cc/New%20HEMI%20Tech/HEMI%20links%20page.html#installs

there are a ton of links halfway down, have measurements and info about the hemi swaps. there is even a 6.1 service manual.

P.S. what you could do is offer a trans crossmember with a 3/8 offset not sure how that would affect driveshaft length. we dont want anyone poppin a driveshaft out goin down the road. you could even put a built-in driveshaft loop package on the custom trans xmember... that would affect stock consoles also though. would be fine for anyone with a cable-shift aftermarket hurst/b&m shifter.
 
Rat Patrol said:
So what mounts and what adapters are you using?
Click to expand...

I usually make my own rather than buying someones and only using a small fraction of it.....no one likes paying twice. I will source a spool poly mount insert and laser cut the rest. The trick/challenge for me is placing the HEMI in the optimum position (with my K, of course) and be able to add ECONOMICAL off the shelf components for ANY trans application with minimal mods to the body as far as the HEMI goes.

I am basing my application on a 4-speed or A/body 727 with no sheetmetal mods. the tunnel area /trans might have to be modified if a large OD trans is used....but that will be up to each builder, no change in Hemi placement will change that fact.

3/8" forward should not affect drive-shaft length issue unless you are way out there now. When I built mine I was told by the Dennys Driveshaft to have 1'-1.5" of area to move inward to eliminate binding....that is alot.
 
Denny I have a set of TTI style mounts if you would like to see where they end up putting the motor on a stock K
 
what are your thoughts on.... 1/2" plus/minus adjustment in the mounts?

side to side?
front to back?
up and down?

is that too much adjustment?...or nice to have provided the end result did not look like an erector set?
 
HemiDenny said:
what are your thoughts on.... 1/2" plus/minus adjustment in the mounts?

side to side?
front to back?
up and down?

is that too much adjustment?...or nice to have provided the end result did not look like an erector set?
Click to expand...

No I think a 1/2" wiggle room would be great.
 
johnparts said:
No I think a 1/2" wiggle room would be great.
Click to expand...

thanks John.... You have had an opportunity to see first hand my commitment to fit and function.....hopefully without sacrificing the look.
 
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