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Username Post: Transmission / Engine Mouting Angle 1968 Impala        (Topic#369542)
toro455 
"7th Year" Silver Supporting Member
Posts: 792
toro455
Loc: Western NY
Reg: 06-15-02
09-21-22 08:56 AM - Post#2847623    

I know this has come-up before but I couldn't find the topic and it came-up only relative to clearance for a different transmission as I recall.

BBC 427 in 1968 Impala TH400 wondering what is the profile intended angle of the engine(motor) and transmission and what it was referenced relative to.

I did try to find it in service manuals but I cannot seem to locate it. I think it was something like 1.5 to 3 degrees tilted back but I wanted to verify.

Thank you,
Scott



 


Shepherd 
Valued Contributor
Posts: 2692

Loc: Lake George, NY
Reg: 11-11-15
09-21-22 05:08 PM - Post#2847644    
    In response to toro455

If you are using all the factory mount positions and mounts, how do you plan on changing it if necessary, btw usually 3 down would do it.






 
toro455 
"7th Year" Silver Supporting Member
Posts: 792
toro455
Loc: Western NY
Reg: 06-15-02
09-21-22 07:52 PM - Post#2847651    
    In response to Shepherd

  • Shepherd Said:
If you are using all the factory mount positions and mounts, how do you plan on changing it if necessary, btw usually 3 down would do it.



Thanks Shepherd,
I measured mine tonight and it measured 2.5 degrees. I also verified the frame measured level. I am using all factory parts with the exception of a TH200-4R instead of a TH400 but those two transmissions share the same bell housing to mount position.

I made the mounting brackets so they're not welded in yet. As far as I could tell they were spot-on compared to the original set but I wanted to check them one more time before welding.

Scott



 
Shepherd 
Valued Contributor
Posts: 2692

Loc: Lake George, NY
Reg: 11-11-15
09-22-22 05:28 AM - Post#2847656    
    In response to toro455

Sounds good to me.



 
sz0k30 
"14th Year" Gold Supporting Member
Posts: 593
sz0k30
Loc: Oakland Co., Michigan
Reg: 10-12-08
09-22-22 07:17 AM - Post#2847665    
    In response to Shepherd

You will not find "Official" numbers in any manual, but 3* down towards the rear is the generally accepted number.



 
toro455 
"7th Year" Silver Supporting Member
Posts: 792
toro455
Loc: Western NY
Reg: 06-15-02
09-23-22 11:42 AM - Post#2847701    
    In response to sz0k30

  • sz0k30 Said:
You will not find "Official" numbers in any manual, but 3* down towards the rear is the generally accepted number.


Thanks. I was also thinking that the frame bracket is the same PN, but slightly different distance, so the theoretical angle would change based on the transmission type, due to mounting location, not to mention the engine stand /motor mount combination. Anyway I was happy with what I measured.

Thanks to those who commented!

Scott




 


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