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04-23-2014, 11:39 AM | #1 |
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Join Date: Jul 2010
Location: Olathe, KS
Posts: 18
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700R4 swap, engine forward method: Headers?
I spent a lot of time reading old threads and only saw a few very old & brief references to headers related to moving the engine forward to swap in a 700R4 tranny. Hopefully, I can get some more recent experiences here. The project is a 1972 Jimmy 4WD with crate 350, no A/C. The transmission is coming from Bow Tie Overdrives with the correct output shaft already installed & the TV-EZ product. I've been a customer of theirs for over 10 years, so using them was a no brainer.
For the swap, I am doing the 'engine forward' method - moving the motor mounts forward 1 3/4" (approx), no other driveline changes necessary. For those that have done this method: 1) what headers did you use or recommend (or what doesn't fit)? 2) what was used for the lower radiator hose? Thanks! |
04-24-2014, 10:12 AM | #2 |
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Join Date: Jun 2004
Location: On The Beach, S C
Posts: 613
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Re: 700R4 swap, engine forward method: Headers?
I used Hedmann headers on my lowered 2 wd. The collectors drag on speed bumps.
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4oldcars Driving: 1971 Jimmy w/68 Chev front clip, 1953 Bel Air 2 dr hdtp, 1996 Roadmaster wagon, 2000 Eldorado The ones I let go: 1931 2 dr sedan, 1935 pick up, 1938 2 dr sedan, 1962 SS 454, 1963 409 wagon, 1970 short bed, 1972 short bed, 1972 sub, 1976 short bed, 1986 long bed, 03 short bed |
04-24-2014, 10:51 PM | #3 |
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Join Date: Jul 2006
Location: Orange, CA
Posts: 191
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Re: 700R4 swap, engine forward method: Headers?
I have full length tri Y Doug Thorley headers on mine and don't have any issues. I moved the motor forward as well. I had to re-clock the header flange on the pass side because of contact being made in certain situations with the leaf spring shackle. I used the same hose, just cut it back. I did take the same amount off the fan shroud that the motor moved to keep the proportion the same and not bury the fan too far inside it. The only problems I had was finding a shop that could build a solid trans, and dialing in the trans cooling (I tow with mine). Other than that I love it! 33" tires with 4.10's
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72 K5 4x4 350 70 Nova 454 5spd 4-link |
04-24-2014, 11:37 PM | #4 | |
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Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,446
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Re: 700R4 swap, engine forward method: Headers?
Quote:
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04-25-2014, 12:16 AM | #5 |
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Join Date: Jul 2010
Location: Olathe, KS
Posts: 18
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Re: 700R4 swap, engine forward method: Headers?
Great info! Thank you.
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