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#1
07-14-2021, 12:05 PM
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1965 GTO trans cross member question
Can I use a trans cross member from a 1965 Chevelle in place of an original 1965 GTO cross member?
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#2
07-14-2021, 02:23 PM
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Never done it but I say yes. The frames are the same, transmissions are mostly the same and even the floor pans are the same.
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#3
07-14-2021, 02:54 PM
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Thanks Jack - I’m thinking the same. I know ends are different (no insulators required and bolt holes are different on the Chevy member)), but I would think the center trans mount falls in the same place...
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#4
07-14-2021, 06:34 PM
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If anyone has used a Chevy trans cross member on their Pontiac please let me know if it was an easy, doable swap......I have an opportunity to get one cheap.
Thanks in advance for any input |
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#5
07-15-2021, 08:04 AM
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Quote:
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#6
07-15-2021, 09:36 AM
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I assume the 65 GTO and 64 GTO use the same crossmember mounts. The Pontiac mounts and Chevy mounts are completely different. The frame rails are the same.
GTO = rubber bushings pressed onto the ends of the crossmember and the rubber bushings are then captured by a metal cup that is bolted to the frame rails. Chevelle: crossmember is bolted directly to the frame. Using a Chevelle crossmember, you'd just have to drill new holes in the frame rails to the more narrow bolt pattern of the Chevelle crossmember. Everything else should be fine as far as shifter linkage clearance, exhaust pipe clearance and parking brake cable mounts. BTW, my Chevelles have bolt holes for both the Chevy and Pontiac mounting styles, don't remember if the GTO does or not so if they do you probably wouldn't have to even drill new holes. Photo shows the underside of my 65 Chevelle, you can see both sets of bolt holes.
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The '64 GTO The '65 Chevelle The '69 Chevy Pickup Project The Brazen Orange 2006 GTO |
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#7
07-15-2021, 10:41 AM
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Anyone have a Chevelle crossmember they'd like to sell me? I assume '64-'67 would be the one. Sooo much cleaner than stamped steel style! I need to look locally but haven't yet. Bone yards don't have much, if any, of this stuff anymore.
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#8
07-15-2021, 10:56 AM
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I just checked my '65 and it has both set of holes drilled.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
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#9
07-15-2021, 01:27 PM
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Thanks for the great responses - I just checked and my GTO also has the additional holes in the frame rails. I’m going to attempt the installation of the Chevelle cross member this weekend. It also looks like the Chevelle cm might provide some additional room for the exhaust pipes.
Thanks again. |
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