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06-28-2009, 06:12 PM
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#1 |
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Registered User
Join Date: Aug 2008
Location: Dexter, N.M.
Posts: 1,082
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454 vs 350
I got a chance of gettin a 78 crew cab that has a 454 big block thats been rebuilt not to long ago. The guys hurtn for some cash. Well heres my question. Will his big block 454 bolt rite up to my 700r4 tranny which is currently bolted up to a 350? Im wanting to take the 350 out the 4x4 and put it into my 2wd, and put the 454 into the 4x4. The 454 has a 400 tranny bolted up to it rite now. thanks for any info.
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Its Kool to be a square  2013 Chevy Silverado Z71 w/ 7" lift and 35" Nitto's 1985 C-10 ......My dream truck (under construction) 1984 k 10 Silverado...6" lift with 38.5 super swampers  New Mexico Member ---  Member of the Square Body Club--- 
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06-28-2009, 07:04 PM
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#2 |
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Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: 454 vs 350
The 454 should bolt up to the 700R4 no problem. But, how good is that 700R4??? Was it rebuilt to handle 450 ft-lb or torque?? If it is stock trany its life expectancy behind 454 will be rather short. However, a proper rebuild with selected hard parts upgrades should make that 700R4 handle anything that a stock 454 can put out.
Another point is TV cable - if you perform the swap make sure that carburetor and flange are set-up for 700R4 TV cable. Failure to correctly set up TV cable on 700R4 (or 200R4) results in almost immediate demise of these transmissions (regardless of engine type). Engine mounts will have to be bolted to the correct holes. Bigger radiator. //RF
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"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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06-28-2009, 09:34 PM
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#3 |
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Registered User
Join Date: Jan 2009
Location: New Orleans, LA
Posts: 702
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Re: 454 vs 350
I would just use the 400 trans. Unless you can't use that transfer case with it. Otherwise it's just as the post above stated. Remove the 350 put the 454 in. Check your TV Cable setup and make really sure it's correctly setup I have actually had this cause me lots of trouble on a swap I did a couple years back. These guys know there stuff and have what you need to make it happen. http://www.transmissioncenter.net/
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82 Chevy SWB "OrangeAnimal" Lot of Goodies! Sold 93 GMC 1500 "Angry Red" 383 TBI Powered Fun! 300hp/410ft.lbs. 09 Yaris wife's daily. |
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