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Differences between Transmission Crossmembers


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I am trying to source a transmission crossmember of this style:

post-20758-14150817553344_thumb.jpg

post-20758-14150817554015_thumb.jpg

post-20758-14150817555441_thumb.jpg

I only found one thread on this transmission crossmember (I'm probably blind), but I am curious to find more information on it:

1. What year(s) does this transmission cover?

2. Do transmission isolators work with all the three types?

post-20758-141508175553_thumb.jpg

3. Are there bushings (stock or energy) still available?

The other two types, for both manual and auto, I have seen (I currently have the one on the right):

post-20758-14150817554576_thumb.jpg

If anyone has one they'd like to either donate or sell, I'd be ever grateful :)

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  • 5 months later...

Actually this question is very interesting. I have the crossmember from my 71 that is on the right. THe one labeled automatic. My car was never an automatic, so I a bit confused at to which crossmember I should have. Now having said that. The crossmember on the right, is called out as a 69-71 style crossmember by other sources. Now I recently upgraded my 4 speed to a type B unit. I wonder if I can use that older crossmember on a newer Type B transmission.

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  • 4 weeks later...

I have one of the cross members you show in post #1. Its yours for $10 + shipping. Drop me a line to z240@shaw.ca. Glad to get rid of it.

The auto/manual labelling on that shot is incorrect. The series 1 z's have a different trans body mount system, where you put the cross member in with two 8mm vertical bolts (which requires the style in-correctly labelled as Auto and the style in post #1), all other s30's use the type with pair of 12mm horizontal bolts, using the crossmember style labelled as manual.

I've always wondered about the mount in post #1, ie which came first, it or the one mis-labelled as auto, and if so, what is the VIN break point for their use? Is it an A vs B type trans mount selection for early cars, ie some kind of cross over point where the trans went to the B type, by the trans x-member mounts on the car were still the vertical bolt type? I'm sure someone will chime in with details.

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I'm not certain - but I don't think so. A friend was converting a A/T to 5spd - and he needed the early manual crossmenber. I didn't ask if his car came with the A/T installed - or if he started with a shell. I found an early crossmember in my spares and gave it to him.. I'll check with him...

Carl B.

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  • 3 weeks later...
  • 4 weeks later...

Apparently up to HLS30-46000 (L24) the rear engine mounting assembly was 11330-E4100 (up to 7/73) shown above on right for ALL transmissions, and from HLS30-46001 (L26) it was 11310-N3000 (from 8/73) shown above on left for manual only.

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That's correct Brian......I just used the crossmember taken from my early 72 automatic transmission (the one on the right) and it also works with the B type 4 speed that I'm replacing it with. The transmission mount insulator is also the same on either transmission....auto or manual..... "A" or "B" tranny.

Edited by Diseazd
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Apparently up to HLS30-46000 (L24) the rear engine mounting assembly was 11330-E4100 (up to 7/73) shown above on right for ALL transmissions, and from HLS30-46001 (L26) it was 11310-N3000 (from 8/73) shown above on left for manual only.

Either I'm not reading the above correctly - missing a period or comma somewhere - or something is wrong.

"up to HLS30-4600(L24)" - - that would be 70/71 Model Year 240Z's

"and from HLS30-46001 (L26)" - - NO - HLS30-46001 would be the start of the 72 Model Year and would have the L24

Yes - from 8/73 forward it would be an L26, but then that would be an RLS30

Also - I'm not sure what picture your looking at when you say "above right" or "above left"... the pictues in the original Post all show up one on top of the other. Are you looking at the last picture - that shows the two mounts together?

FWIW,

Carl

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Either I'm not reading the above correctly - missing a period or comma somewhere - or something is wrong.

"up to HLS30-4600(L24)" - - that would be 70/71 Model Year 240Z's

"and from HLS30-46001 (L26)" - - NO - HLS30-46001 would be the start of the 72 Model Year and would have the L24

Yes - from 8/73 forward it would be an L26, but then that would be an RLS30

Also - I'm not sure what picture your looking at when you say "above right" or "above left"... the pictues in the original Post all show up one on top of the other. Are you looking at the last picture - that shows the two mounts together?

FWIW,

Carl

Okay let me see:

Apparently up to HLS30-46000 (L24) the rear engine mounting assembly was 11330-E4100 (up to 7/73) shown above on right for ALL transmissions, and from HLS30-46001 (L26) it was 11310-N3000 (from 8/73) shown above on left for manual only.

Jun 74 revision:

Section 19-2 Engine mounting (Auto All. Manual up to C/# HLS30-46000) (From RLS30, GRLS30) Part # 11330-E4100 assembly Up to 7/73; Part # 11310-N3000 assembly From 8/73

Section 19A-2 Engine mounting (Manual from C/# HLS30-46001 RLS30 GRLS30) Part # 11330-E8700 assembly L24 Manual Up to 6/72; Part # 11310-N3000 assembly From 7/72

Edited by bpilati
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  • 4 years later...

Resurrecting an old topic but I am looking for a cross member discussed above that would be for a 70-71 Z (it's the one pictured above that would bolt to the trans tunnel vertically) .

Please contact if available (also posted a WTB classified).

 

Thanks

Transmission Crossmember.jpg

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zKars, you are "The Man" when it comes to "giving up" your parts for club members..... you do over and over again.I'm proud to be on the back of Morton's car with you....Good job!    Guy

Edited by Diseazd
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  • 4 years later...
On 3/24/2017 at 12:48 PM, GV Z Car said:

Resurrecting an old topic but I am looking for a cross member discussed above that would be for a 70-71 Z (it's the one pictured above that would bolt to the trans tunnel vertically) .

Please contact if available (also posted a WTB classified).

 

Thanks

Transmission Crossmember.jpg

 

Ok, now I'm looking for one of these also.  Please let me know if you have one.

 

 

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1 minute ago, texasz said:

That one is a different style.

That is the one the original poster of this thread asked for it is a single year model. that mounts like the early one but has the side bushings as well. 

Looks like you are actually after the one in post 15, the earlier one. correct?  I didn't look at the quoted picture and it does not show up until I click the "expand" link on it. 

Thanks for clarifying. 

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