351 SVO block

Go down

351 SVO block

Post  BBFTorino on March 24th 2018, 4:04 am

I have a stroker Windsor based on the 351 SVO block. On the rear area of the block, it has a passage that leads into the coolant area. Just looking at it visually, it looks to be about a 7/16" diameter hole, but its not threaded, so I cant plug it with a common threaded plug. It appears to take some type of push in fitting, like the way an oil dipstick pushes into a block or timing cover.
Is this some type of coolant bypass or something??
What do I use to plug it with??
Can I tap it for threads and install a threaded plug??

BBFTorino

Posts : 501
Join date : 2015-12-31

View user profile

Back to top Go down

Re: 351 SVO block

Post  dfree383 on March 24th 2018, 11:07 am

What block do you have their are a number of variations
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 13927
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: 351 SVO block

Post  BBFTorino on March 25th 2018, 1:51 am

Well, I cant make out the rest of the casting numbers, but I have F5ZM-6010.
But I "think" its "W351".
It is a 9.5" deck and has a 2 bolt cap on #1, but the center 3 are splayed 4 bolt, and the last one is a 4 bolt with straight bolts.
Also, it is cast without an oil filter mounting pad, it has two threaded oil ports (inlet / outlet), but is still a wet sump design.
And on the rear passenger side of the block, it has this coolant source that either must be plugged, or plumbed into something.

BBFTorino

Posts : 501
Join date : 2015-12-31

View user profile

Back to top Go down

Re: 351 SVO block

Post  Doug Rahn on April 4th 2018, 7:34 am

Have you got a photo of the area, and is it on the rear china wall inside the lifter valley?
avatar
Doug Rahn
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 1634
Join date : 2009-08-07
Age : 66
Location : Springfield, GA

View user profile http://www.cardomain.com/ride/228081

Back to top Go down

Re: 351 SVO block

Post  lance flake on April 4th 2018, 5:08 pm

I had a w351 block in the past with the same hole you are talking about. It was a blind drilled hole went to nothing. I'm not sure what the purpose was for it. I ran the engine with no plug in it and had no leaks

lance flake

Posts : 78
Join date : 2009-12-28
Location : union ms

View user profile

Back to top Go down

Re: 351 SVO block

Post  BBFTorino on April 5th 2018, 1:24 am

Really?? I hope that is the case. I can see down in it with a flashlight and I can see there is some normal rust color like you would see in a coolant passage.
But then, yeah, why would the plug be missing??

http://i61.tinypic.com/t6a651.jpg
You can see it in this picture^^ its outside the China wall, next to the bellhousing face.

BBFTorino

Posts : 501
Join date : 2015-12-31

View user profile

Back to top Go down

Re: 351 SVO block

Post  lance flake on April 5th 2018, 10:17 am

looks just like what I had. Not real sure what that was there for. You could put a knock in freeze plug or tap it for a pipe plug if you wanted.

lance flake

Posts : 78
Join date : 2009-12-28
Location : union ms

View user profile

Back to top Go down

Re: 351 SVO block

Post  jbozzelle on April 8th 2018, 10:34 pm

Level the block in the engine stand and pour some liquid in that hole to see where it goes... If it goes nowhere, forget about it...

jbozzelle

Posts : 3500
Join date : 2009-08-10
Age : 43
Location : New Orleans

View user profile

Back to top Go down

Re: 351 SVO block

Post  BBFTorino on April 14th 2018, 4:43 am

Well it does indeed lead into the coolant passage. Put water in the block, and it rose up and seeped out that hole.
Installed a press-in plug and all is well. Cool

BBFTorino

Posts : 501
Join date : 2015-12-31

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum