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Author Topic: TH350 to 700R4...Need info ASAP  (Read 2076 times)

Offline TxFiddler

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TH350 to 700R4...Need info ASAP
« on: May 01, 2011, 12:06:54 am »
So, going behind my 427 is a custom built 700R4.  I need to know exactly how far back I need to move the tranny crossmember.  I have heard 3 inches.  Is this correct?  Please chime in.  Need it for Sunday.
Thanks,
Fidd
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator

Offline Grim 82

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Re: TH350 to 700R4...Need info ASAP
« Reply #1 on: May 01, 2011, 01:48:51 am »
I think your best bet would be to bolt it up to the motor, have the crossmember bolted on to the trans, and lift it up to the frame with a jack and then drill the holes in the frame. I wouldn't drill any holes in advance expecting them to line up. Just get it bolted up and see where the holes need to be and you should be good to go.
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Give a man a gun, and he might rob a bank. Give a man a bank, and he might rob the world.

Offline mach1mustang351

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Re: TH350 to 700R4...Need info ASAP
« Reply #2 on: May 02, 2011, 01:23:07 am »
I just did mine (not a big block) but a T350 to 700r4 swap.  Mine is a 4x4 and I used the spacer type adapter.  I was able to put the front cross member bolt in the rear cross member bolt hole and drill only one new hole per side. 
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