Transmission advice - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevycheetah · 07-13-2016, 01:42 PM

http://www.ebay.com/itm/GM-Goodwrenc...id=p5731.m3795

I'm looking into buying a new engine for my truck within the coming months... what I have now was a crate motor that some young hillbilly just ruined by driving It wayyyyyy too hard. It's salvageable but I'd rather get a new one and clean up the old one and use it on another project later, (maybe 383?)...

It's a one piece seal engine that is run to a 700r4. My question is, can a one piece and two piece seal tranny/ engine combo work? If not can adapters be used to make it work and/ or would I be smarter just to locate a new transmission? The engine I plan on getting is linked above and came from the recommendation of many on its value (I think its also listed for like $1200?)
Any ideas would be great... I'm torn on whether to go manual or automatic but the less money I spend on the transmission, the more I can spend on my house............ orrrrrrrrrrrr on the interior of the truck..... just don't tell my wife

**biketopia** · 07-13-2016, 02:22 PM

The trans physically will bolt up just fine, your only difference between engines of 1 or 2 pieces rear main is the flexplate size, I believe. Just make sure you use the correct starter and flexplate for your combo and you'll be good to go. Other than 195hp isn't much to have any fun with, unless you stick a new cam in it when you get it.

MMcMasters · 07-13-2016, 02:26 PM

The difference between your older small block being a 2 piece rear main seal vs the engine in the link being a 1 piece rear main seal has zero bearing on the ability to mate it up to a 700R4. Yes it will be just fine

chevycheetah · 07-13-2016, 02:29 PM

What is the difference in the flexplate and the starter? Do I just need an older flexplate and starter for the two piece engine?

MMcMasters · 07-13-2016, 03:19 PM

Quote:

Originally Posted by chevycheetah

What is the difference in the flexplate and the starter? Do I just need an older flexplate and starter for the two piece engine?

If you run a 153 tooth flexplate get a starter that is compatible. Some starters have dual bolt patterns for mounting to the engine and will work for either a 153 tooth or a 168 tooth.

The engine in your link is internally balanced as well so make sure whatever flexplate you choose is internally balanced.

Mike

chevycheetah · 07-13-2016, 03:24 PM

Thanks. Yall are a big help

garyd1961 · 07-13-2016, 09:39 PM

You might want to take a look at this engine. It's a little more but a better deal in my opinion. It's a 4 bolt main block, hydraulic roller cam, vortec heads and heavy duty valves with hardened valve seat inserts. I have one and it runs smooth but has good power.
It does requires an electric fuel pump and vortec intake. The intake is no problem neither is the electric fuel pump really but I admit I had rather have a mechanical fuel pump. The way I look at though is most all cars on the road today have an electric fuel pump. I almost forgot it has 9.4:1 compression.
Also comes with balancer.
https://www.summitracing.com/search?...yword=12530283

07-13-2016, 01:42 PM	#1
chevycheetah Registered User Join Date: Jun 2016 Location: Alexandria, Ky Posts: 19	Transmission advice http://www.ebay.com/itm/GM-Goodwrenc...id=p5731.m3795 I'm looking into buying a new engine for my truck within the coming months... what I have now was a crate motor that some young hillbilly just ruined by driving It wayyyyyy too hard. It's salvageable but I'd rather get a new one and clean up the old one and use it on another project later, (maybe 383?)... It's a one piece seal engine that is run to a 700r4. My question is, can a one piece and two piece seal tranny/ engine combo work? If not can adapters be used to make it work and/ or would I be smarter just to locate a new transmission? The engine I plan on getting is linked above and came from the recommendation of many on its value (I think its also listed for like $1200?) Any ideas would be great... I'm torn on whether to go manual or automatic but the less money I spend on the transmission, the more I can spend on my house............ orrrrrrrrrrrr on the interior of the truck..... just don't tell my wife __________________ 1972 Chevrolet C20 350 crate motor, 700R4 "It's more fun to experience things when you don't know what's going to happen."

07-13-2016, 02:22 PM	#2
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,030	Re: Transmission advice The trans physically will bolt up just fine, your only difference between engines of 1 or 2 pieces rear main is the flexplate size, I believe. Just make sure you use the correct starter and flexplate for your combo and you'll be good to go. Other than 195hp isn't much to have any fun with, unless you stick a new cam in it when you get it. __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350

07-13-2016, 02:26 PM	#3
MMcMasters Registered User Join Date: Dec 2012 Location: Rochester, IL Posts: 537	Re: Transmission advice The difference between your older small block being a 2 piece rear main seal vs the engine in the link being a 1 piece rear main seal has zero bearing on the ability to mate it up to a 700R4. Yes it will be just fine __________________ __________________ Mike 70 Med Olive build http://67-72chevytrucks.com/vboard/s...d.php?t=714804 Instagram- protouring66

07-13-2016, 02:29 PM	#4
chevycheetah Registered User Join Date: Jun 2016 Location: Alexandria, Ky Posts: 19	Re: Transmission advice What is the difference in the flexplate and the starter? Do I just need an older flexplate and starter for the two piece engine? __________________ 1972 Chevrolet C20 350 crate motor, 700R4 "It's more fun to experience things when you don't know what's going to happen."

07-13-2016, 03:24 PM	#6
chevycheetah Registered User Join Date: Jun 2016 Location: Alexandria, Ky Posts: 19	Re: Transmission advice Thanks. Yall are a big help __________________ 1972 Chevrolet C20 350 crate motor, 700R4 "It's more fun to experience things when you don't know what's going to happen."

07-13-2016, 09:39 PM	#7
garyd1961 Registered User Join Date: May 2016 Location: Henderson NC Posts: 975	Re: Transmission advice You might want to take a look at this engine. It's a little more but a better deal in my opinion. It's a 4 bolt main block, hydraulic roller cam, vortec heads and heavy duty valves with hardened valve seat inserts. I have one and it runs smooth but has good power. It does requires an electric fuel pump and vortec intake. The intake is no problem neither is the electric fuel pump really but I admit I had rather have a mechanical fuel pump. The way I look at though is most all cars on the road today have an electric fuel pump. I almost forgot it has 9.4:1 compression. Also comes with balancer. https://www.summitracing.com/search?...yword=12530283 Last edited by garyd1961; 07-13-2016 at 09:44 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.