Will a 700r4 from a 84 s-10 blazer work in our trucks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jsbgump · 01-30-2007, 09:15 PM

Will a 700r4 from a 84 s-10 blazer work in my 68? It had a 2.8 in front of it originally. I will get it rebuilt before I ever use it. Just wanted to know if it would work

chevybill · 01-30-2007, 09:59 PM

You will need an automatic crossmember which is no big deal.
Are you sure that a 700r4 came in a s-10? Just looking at one they appear too large for a s-10 truck or blazer.
I know some on the board say to stay away from certain years of this tranny as they are weak and not quite as good as some later year 700's. I am not sure which years are the best.

BarryB · 01-30-2007, 10:15 PM

Yes Chevybill 700r4 came factory in the 4.3 S10's . If it was behind a 2.8. then no it won't work because a 2.8 had a different bell housing bolt pattern. now if it was a 4.3 S10. then the bell housing well bolt to a small block.

**VetteVet** · 01-30-2007, 10:18 PM

I had an 84 s-15 GMC with the 2.8 and the trans will not bolt up to a SBC the only engines with the same bolt pattern are the 4.3 v-6s. The trans is not called a 700r4 IIRC. I would have to look up the manual to see what it was called. Now it may be that the blazer is different so don't take this as gospel.

jsbgump · 01-30-2007, 10:25 PM

Thanks guys i found the info already

cooters · 01-30-2007, 10:27 PM

2.8 and 4.3 S 10 came with 700. Yes the bellhousing is different on the 2.8. The 4.3 700 is different from V 8 version on the inside ( less clutches on a 4.3 unit ) these are still ok if you dont pull hard or put lots of power to it.

Black 95 TSI · 01-30-2007, 10:30 PM

and the 4.3 700r4 case is diffent too they dont have the small ears on the front where it monts the to motor but its wont effect anything, may be better to clear headers tho

01-30-2007, 09:15 PM	#1
jsbgump Gone Fishing Join Date: Aug 2005 Location: Fort Worth, Texas 76135 Posts: 12,361	Will a 700r4 from a 84 s-10 blazer work in our trucks Will a 700r4 from a 84 s-10 blazer work in my 68? It had a 2.8 in front of it originally. I will get it rebuilt before I ever use it. Just wanted to know if it would work __________________ 68 Chevy Short Fleetside LSX Swap Under Way 3.73 posi 2.5/4 drop Frame of resto has been started 2022 Hyundai Tucson Limited 2019 Chevy Traverse Redline Edition Wifes Ride Build Thread http://67-72chevytrucks.com/vboard/s...=1#post3483616

01-30-2007, 09:59 PM	#2
chevybill Senior Member Join Date: Oct 2004 Location: calhoun city ms Posts: 940	Re: Will a 700r4 from a 84 s-10 blazer work in our trucks You will need an automatic crossmember which is no big deal. Are you sure that a 700r4 came in a s-10? Just looking at one they appear too large for a s-10 truck or blazer. I know some on the board say to stay away from certain years of this tranny as they are weak and not quite as good as some later year 700's. I am not sure which years are the best. __________________ ongoing 1970 c 10 lwb 1994 z-28 few mods.-owned since new 1978 vette silver/grey 25th anniv. paint

01-30-2007, 10:15 PM	#3
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: Will a 700r4 from a 84 s-10 blazer work in our trucks Yes Chevybill 700r4 came factory in the 4.3 S10's . If it was behind a 2.8. then no it won't work because a 2.8 had a different bell housing bolt pattern. now if it was a 4.3 S10. then the bell housing well bolt to a small block.

01-30-2007, 10:18 PM	#4
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,709	Re: Will a 700r4 from a 84 s-10 blazer work in our trucks I had an 84 s-15 GMC with the 2.8 and the trans will not bolt up to a SBC the only engines with the same bolt pattern are the 4.3 v-6s. The trans is not called a 700r4 IIRC. I would have to look up the manual to see what it was called. Now it may be that the blazer is different so don't take this as gospel. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

01-30-2007, 10:25 PM	#5
jsbgump Gone Fishing Join Date: Aug 2005 Location: Fort Worth, Texas 76135 Posts: 12,361	Re: Will a 700r4 from a 84 s-10 blazer work in our trucks Thanks guys i found the info already __________________ 68 Chevy Short Fleetside LSX Swap Under Way 3.73 posi 2.5/4 drop Frame of resto has been started 2022 Hyundai Tucson Limited 2019 Chevy Traverse Redline Edition Wifes Ride Build Thread http://67-72chevytrucks.com/vboard/s...=1#post3483616

01-30-2007, 10:27 PM	#6
cooters Senior Member Join Date: Oct 2006 Location: Edmonton Alberta Posts: 458	Re: Will a 700r4 from a 84 s-10 blazer work in our trucks 2.8 and 4.3 S 10 came with 700. Yes the bellhousing is different on the 2.8. The 4.3 700 is different from V 8 version on the inside ( less clutches on a 4.3 unit ) these are still ok if you dont pull hard or put lots of power to it.

01-30-2007, 10:30 PM	#7
Black 95 TSI Registered User Join Date: Jan 2007 Location: Alexandria VA Posts: 77	Re: Will a 700r4 from a 84 s-10 blazer work in our trucks and the 4.3 700r4 case is diffent too they dont have the small ears on the front where it monts the to motor but its wont effect anything, may be better to clear headers tho



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