250/3tree to 305/200r4 swap??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**tkeduk8r** · 10-07-2004, 08:57 AM

Well my little 250 decided to snap a head bolt and blow a head gasket last night, so i figure this is a good time to swap over to a fresh 305 ive had built for the last year... so i know it would be easy to do the v8 conversion, but i also have a dual bolt bellhousing 2004r and was wondering what was all needed to do the swap to the overdrive trans... the truck is not aheavy hauler, but with 3.73's the OD would be nice to keep the revs down on the freeway... I have a 76 Silverado 350/TH350 donor truck to pull parts from.. thanks in advance... oh and its a 2wd....
--Mike

bigblock73 · 10-07-2004, 09:06 AM

Mike, visit this site, there you should find out everything you need to know to swap over to a OD trans. I purchased my 700 from them, and they were very helpful.

Not knowing the differences between the 200 and 700...I will tell you what you need for a 700. TV cable setup, dual pattern flexplate, and TC lockup wiring (optional?). You might also have to move your trans crossmember back, and you might need a new drivshaft or have yours modified.

That is just a quick run thru, I am sure others will chime in and offer their advice as well.

Good luck on the swap, and keep us posted.

**tkeduk8r** · 10-08-2004, 01:11 PM

thanks man.. i checked i out... how have you found your dealings with thm.. positive???? I also just went out and checked and the lengths of hte 2004r and the muncie 3 speed are the same.. WOOHOO!!!! so thinks are goin in the right direction, also got my parts truck running last night to make sure the power steering works and it does, so weel see.... one more wuestion though... is there anyway to do th TV hookup w/o a kit??? thanks agian..
--Mike

bigblock73 · 10-08-2004, 01:31 PM

Mike, I was more than pleased with Bowtie Overdrives. They were very helpful and were able to supply me with everything I needed.

TV cable without a kit, I am sure there is a way (check Jegs or Summit for the parts), but a kit is much more convienient to get a kit if you ask me.

grayw0lf · 10-08-2004, 02:08 PM

If you change your mind about the 200R4, I'd be happy to take it off your hands for you.

rockman20 · 10-08-2004, 03:11 PM

If you or someone you know is handy with metal, you can make a bracket that the TV cable fits into. On my pickup, my dad made a bracket for the cable. It bolts directly to the accelerator cable bracket. Works really well.

10-07-2004, 08:57 AM	#1
tkeduk8r Senior Member Join Date: Apr 2001 Location: Alexandria, MN Posts: 1,462	250/3tree to 305/200r4 swap??? Well my little 250 decided to snap a head bolt and blow a head gasket last night, so i figure this is a good time to swap over to a fresh 305 ive had built for the last year... so i know it would be easy to do the v8 conversion, but i also have a dual bolt bellhousing 2004r and was wondering what was all needed to do the swap to the overdrive trans... the truck is not aheavy hauler, but with 3.73's the OD would be nice to keep the revs down on the freeway... I have a 76 Silverado 350/TH350 donor truck to pull parts from.. thanks in advance... oh and its a 2wd.... --Mike __________________ 63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's

10-07-2004, 09:06 AM	#2
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,826	Mike, visit this site, there you should find out everything you need to know to swap over to a OD trans. I purchased my 700 from them, and they were very helpful. Not knowing the differences between the 200 and 700...I will tell you what you need for a 700. TV cable setup, dual pattern flexplate, and TC lockup wiring (optional?). You might also have to move your trans crossmember back, and you might need a new drivshaft or have yours modified. That is just a quick run thru, I am sure others will chime in and offer their advice as well. Good luck on the swap, and keep us posted. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

10-08-2004, 01:11 PM	#3
tkeduk8r Senior Member Join Date: Apr 2001 Location: Alexandria, MN Posts: 1,462	thanks man.. i checked i out... how have you found your dealings with thm.. positive???? I also just went out and checked and the lengths of hte 2004r and the muncie 3 speed are the same.. WOOHOO!!!! so thinks are goin in the right direction, also got my parts truck running last night to make sure the power steering works and it does, so weel see.... one more wuestion though... is there anyway to do th TV hookup w/o a kit??? thanks agian.. --Mike __________________ 63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's

10-08-2004, 01:31 PM	#4
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,826	Mike, I was more than pleased with Bowtie Overdrives. They were very helpful and were able to supply me with everything I needed. TV cable without a kit, I am sure there is a way (check Jegs or Summit for the parts), but a kit is much more convienient to get a kit if you ask me. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

10-08-2004, 02:08 PM	#5
grayw0lf Registered User Join Date: Apr 2004 Location: Clanton, AL Posts: 1,253	If you change your mind about the 200R4, I'd be happy to take it off your hands for you. __________________ 85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal!

10-08-2004, 03:11 PM	#6
rockman20 "The dude abides" Join Date: Apr 2003 Location: North Dakota Posts: 472	If you or someone you know is handy with metal, you can make a bracket that the TV cable fits into. On my pickup, my dad made a bracket for the cable. It bolts directly to the accelerator cable bracket. Works really well. __________________ RockMan 1993 Chevy Silverado C3500 1 ton dually 1994 Honda Civic 1969 Oldsmobile Cutlass S 1953 IH Farmall Super M New to the fleet: 1992 Subaru Loyal



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