Photobucket
Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Nice GM #3858403 Bell housing


Addicted!

Status: Offline
Posts: 161
Date:
Nice GM #3858403 Bell housing


Nice original 403 GM Bell housing
Good shape
$125. plus shipping
Stay Safe!

Keep on Cruising!
Dave


Attachments
__________________


Addicted!

Status: Offline
Posts: 161
Date:

Dave

Do you know why some of these have the "boss" (for the hydraulic cylinder bracket) on only one side, just below the 2nd bolt hole on the LHS, whereas others have the "boss" on both sides?

I've often wondered why. This one clearly has the casting knockouts where it can be left or right side fork, and also the casting to be drilled and tapped on either side for the fork pivot, yet the RHS boss is not there.

We got those same bellhousings here with the fork hole part on the LHS intact, but punched out on the other side for a RHS fork, plus the pivot ball hole drilled and tapped on the other side to this one. That is why the 3858403 cast number is on the removeable bit for a RHS fork, on ours there is a different casting number (3858404) on the bit that would be removed for a LHS fork.

I have one here from an imported (from the USA) 1968 Camaro that has the boss on both sides, but others that are like the one you have listed. Maybe it is simply a running change?

RHS fork and you can see the boss I'm talking about:

RHS fork.jpg



-- Edited by HK1837 on Monday 28th of December 2020 11:11:50 PM

Attachments
__________________


Uber Guru

Status: Offline
Posts: 3509
Date:

This is a 153 tooth flywheel bh, is the 404 for a 153?

__________________

63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic



Canadian Poncho Superstar!

Status: Offline
Posts: 8114
Date:

153 Tooth

Did you know, 3858403 is the GM part number, and could show a 3840383 casting number



__________________
65 Laurentian post, 67 Grande Parisienne 4 door HT. 
 


Addicted!

Status: Offline
Posts: 161
Date:

3858404 is the same 153 tooth bellhousing, identical. When they were cast they had both casting numbers on them, located on the bit that was removed for the fork to poke through. If you wanted a left side fork 3858404 was removed. If you wanted a RH side fork 3858403 was removed. The RH side fork was mainly for right hand drive but I have heard (unconfirmed) that some Corvettes also had a RH side fork. The only quirk I have noticed is some (like Dave's pictures) are missing the boss on the RHS, you can see it in the photo I put up.

Another quirk is casting number 3858404 is part number 3858402 whereas 3858403 is the same for both cast number and part number.

__________________


Addicted!

Status: Offline
Posts: 161
Date:

Sold- to a local guy!
Keep on Cruising!
Dave

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.