Author Topic: '69 bell housing bolts  (Read 1588 times)

rlw68

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'69 bell housing bolts
« on: October 25, 2018, 01:44:57 PM »

I've heard the early '69s bell housing bolts had an 'M' marking.  These supposedly changed to 'A' marked ones at some point.  Anyone know roughly when this occurred? 

Rob
Rob
1969 02D Norwood Z/28. Lemans Blue 715

bertfam

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Re: '69 bell housing bolts
« Reply #1 on: October 25, 2018, 02:03:56 PM »
Rob, bolts, nuts, washers, and all fasteners in general were supplied by several vendors and all of the same size were mixed in together in the same bin. There's not "A" correct bolt for a given application because the line worker just grabbed whatever was in the bin and used it. You'll see all kinds of markings on bolts from nothing at all, to letters, to symbols.

Ed
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rlw68

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Re: '69 bell housing bolts
« Reply #2 on: October 25, 2018, 11:42:13 PM »
Thanks for the reply Ed.  Yes I get it they could've had a bin full of RBWs on 2/28/1969.  Who knows :)
AMK has been my goto for an 'acceptable' replacement when needed.  However in this case there are two bell housing bolts to choose from for 69.  It seems very specific.  Either way whats in there now aint even flange bolts.

G-6611    BELL HOUSING>ENGINE   FLNG BOLTS, "M" MARKING   
G-6149    BELL HOUSING>ENGINE   FLNG BOLTS (Flat Top) "A" MARKING   
Rob
1969 02D Norwood Z/28. Lemans Blue 715

Mike S

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Re: '69 bell housing bolts
« Reply #3 on: October 26, 2018, 12:10:59 AM »
 Buy a bag of each.....it would look just as 'correct' mixed as it would not mixed.

Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

ko-lek-tor

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Re: '69 bell housing bolts
« Reply #4 on: October 26, 2018, 01:44:59 PM »
The A head are flat across the top, whereas the M has a recessed top. I was under the impression that although they are the same length bolt, the A was for the aluminum intake 396-427 engines (possibly 302, not sure)?
James to strangers, Bentley to friends
1969 SS/RS 396 coupe Hugger Orange X22 712 owned since 79
1969 SS 350 coupe LeMans Blue 713 bought in 79(sold)
1969 D.H.COPO replica 4spd. 4.10 posi coupe Daytona Yellow 711 owned since 85