Split Y pipe - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vince1 · 05-15-2019, 07:04 AM

Could the pipe split as a result of a backfire? The 79 350 I got had oil diluted with gasoline and some inexperienced kids had previously tried to get it started. The donor truck was later scrapped due to severe rust.

It has a TH400 attached. I am wondering what is the minimum I have to do to ensure it is OK. Put some oil in and do a compression check? Remove trans and put in new T/C seal? Pull engine pan for a look and put in front and rear seals and new timing set?

I will be putting in a quadrajet carb kit and having a look at the distributor that seems a little stiff to turn.

Opinions welcome.

**PGSigns** · 05-15-2019, 09:07 AM

Plugs will give you an idea of the overall condition. Puling a valve cover tells you how well it was taken care of. Nice and clean and we may have something, full of gunk we have one that may need a rebuild. With gas in the oil I would pull the pan. Never know what shape the bottom end is in. Any time I buy a non running engine I just assume its a core.
Jimmy

vince1 · 05-15-2019, 10:34 AM

The price was right in that I just had to pull them out. They got transported in the back of a VW Golf sportwagon on a cut down pallet.

The plugs must have been good because I was told they were previously swapped out to a different engine.

vince1 · 05-15-2019, 11:12 AM

In the car

I did some phoning and found out the split Y pipe was not even from this engine as it used to have dual exhaust. Regardless i'll take PGSigns advice and tear it down for an overhaul.

05-15-2019, 07:04 AM	#1
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,170	Split Y pipe Could the pipe split as a result of a backfire? The 79 350 I got had oil diluted with gasoline and some inexperienced kids had previously tried to get it started. The donor truck was later scrapped due to severe rust. It has a TH400 attached. I am wondering what is the minimum I have to do to ensure it is OK. Put some oil in and do a compression check? Remove trans and put in new T/C seal? Pull engine pan for a look and put in front and rear seals and new timing set? I will be putting in a quadrajet carb kit and having a look at the distributor that seems a little stiff to turn. Opinions welcome.

05-15-2019, 09:07 AM	#2
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Split Y pipe Plugs will give you an idea of the overall condition. Puling a valve cover tells you how well it was taken care of. Nice and clean and we may have something, full of gunk we have one that may need a rebuild. With gas in the oil I would pull the pan. Never know what shape the bottom end is in. Any time I buy a non running engine I just assume its a core. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

05-15-2019, 10:34 AM	#3
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,170	Re: Split Y pipe The price was right in that I just had to pull them out. They got transported in the back of a VW Golf sportwagon on a cut down pallet. The plugs must have been good because I was told they were previously swapped out to a different engine.

05-15-2019, 11:12 AM	#4
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,170	Re: Split Y pipe In the car I did some phoning and found out the split Y pipe was not even from this engine as it used to have dual exhaust. Regardless i'll take PGSigns advice and tear it down for an overhaul. Attached Images Last edited by vince1; 05-16-2019 at 07:09 AM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.