11-13-2010, 11:14 PM | #1 |
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700R4 crossmember
Do the 700R4 tranny's require a 700R4 specific crossmember? Or can you use a turbo 350 or 400 crossmember?
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1965 c/10 swb 1969 c/10 lwb |
11-13-2010, 11:24 PM | #2 |
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Re: 700R4 crossmember
No you need one for the 700. It is a different length tranny, I have heard of some guys just unriveting the 350/400 cross member and aligning it with the 700 but I have never seen it in action. Now days they are ready made for many vehicles and are not too expensive.
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11-14-2010, 12:10 AM | #3 |
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Re: 700R4 crossmember
You do not need to buy a cross-member.
Slide the cross-member back & drill new holes in the frame, You can use the 3 speed mount, just make sure to use metric bolts in the transmission case, they are 10 X 1.50mm |
11-14-2010, 01:16 AM | #4 |
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Re: 700R4 crossmember
Exactly....there's no need for any kind of special crossmember. You just need an auto trans crossmember for a '66-'87 truck. You will need the correct trans mount for the crossmember, ie: single stud, or two threaded holes. Of course you can always drill a couple holes for the mount if needed.
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11-14-2010, 02:08 AM | #5 |
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Re: 700R4 crossmember
yes...but, but, but...
Keep in mind that re-drilling the upper holes for the stock crossmember is next to impossible. Also, you will not have access to your rear transmission pan bolts which is a deal breaker for me on any trans swap. I hate moving a crossmember just to drop a pan, and with the 700R4 you will need to drop the pan and check on your TV plunger stroke if you're doing it right. These two reasons were enough for me to cough up the $50 for a CPP crossmember which bolts on the bottom of the frame rails and has much more clearance.
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Last edited by LEEVON; 11-14-2010 at 02:08 AM. |
11-14-2010, 10:47 PM | #6 |
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Re: 700R4 crossmember
Make you own if you don't move your current one. I had a one made with dual humps for exhaust.
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11-20-2010, 01:57 AM | #7 |
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Re: 700R4 crossmember
does any one have dimensions/specs for the cpp or other aftermarket cross member?
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1965 c/10 swb 1969 c/10 lwb |
11-20-2010, 02:14 AM | #8 | |
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Re: 700R4 crossmember
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11-21-2010, 07:08 AM | #9 | |
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Re: 700R4 crossmember
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11-23-2010, 12:30 AM | #10 |
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Re: 700R4 crossmember
Ok.... now let me ask this.....
Im running the baer rear disc brakes, its a short bed and running the 700R4, would I need to remove the e-brake crossmember? If so what would I need to do in order to add an e-brake? Or what is the solution to this problem becasue i know that some one has done this before.
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11-23-2010, 01:49 AM | #11 |
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Re: 700R4 crossmember
Do your rear disc brakes have an e-brake? If so, you will need to fabricate something on the bottom of your trans crossmember for the cables, or else use the e-brake cable system from a '66-'72 truck. Member TR65 fabricated a trans crossmember for his truck to accomodate the e-brake cables. If you do a search, you should find it.
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11-25-2010, 12:09 AM | #12 |
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Re: 700R4 crossmember
ok ill look for it and yes the rear calipers have ebrakes
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05-07-2013, 05:53 PM | #13 | |
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Re: 700R4 crossmember
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05-09-2013, 09:37 AM | #14 | |
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Re: 700R4 crossmember
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05-09-2013, 12:04 PM | #15 |
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Re: 700R4 crossmember
You can use a stock crossmember if the transmission mount attaches at the tailshaft like in Persh's picture.
http://www.persh.org/images/65Pickup/Trans_Xmbr4.jpg What I ran into with my 700R conversion was the transmission mount was further forward on the transmission. This location interfered with the pan, so I trimmed the front of the crossmember—mainly because my truck had the parking brake assembly attached to the rear of the crossmember and I didn't want to lose that provision. If your transmission mounts at the rear, it is true you can use a stock crossmember, and depending on your parking brake setup will have to either attach it to the crossmember or use the later style like Captain Fab suggested. If you want the crossmember with the parking brake attachment already done, Bowtie Overdrives has one for $175. I decided I didn't like the modified crossmember in mine so I went with the $79 CPP one. And while I'm doing it, using the later style parking brake setup. Parking brake assembly: I have a '70 c20 longbed parts truck in my yard. I don't know if the parts I removed are available aftermarket or you would need to go to a junkyard, but I can say with my install, all I need to buy is the intermediate cable. LMC carries it for $9.95, and it is the same part number '64-72, so even though the parking brake is different (hand brake vs pedal) the intermediate cable is the same. I agree the mechanism is simpler, but I don't know if I would have gone to the trouble of converting to the later style if I didn't have the parts truck sitting 50 feet from my garage.
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06-06-2014, 07:15 AM | #16 |
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Re: 700R4 crossmember
Thanks for the info dwntown I'm ordering 1 from bowtie overdrive they look really nice. And since I have torsion bars on my 62 I don't have a lot of oppotions I could make one but it would not look near as good..
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12-28-2018, 12:19 PM | #17 |
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Re: 700R4 crossmember
Please somebody correct me if I'm wrong but aren't the crossmember for a turbo 350 and a turbo 400 different? And I'm not sure what of the two Transmissions were in this truck prior to buying it but my crossmember does not seem to want to bolt up properly to the transmission. Is it possible that I have the wrong rubber mount peace?
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12-28-2018, 12:56 PM | #18 | |
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Re: 700R4 crossmember
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12-28-2018, 11:46 PM | #19 | |
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Re: 700R4 crossmember
No the crossmember is the same, just a different set of holes in the frame to bolt it in. A pic might help troubleshoot your issue.
Quote:
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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12-29-2018, 03:17 AM | #20 |
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Re: 700R4 crossmember
Okay then i must have something else going on here then, mabey crossmembers been altered.I better pull it back out and have a better look see at it. THANKS for your response, will have a update on issue couple days.
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