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Block Filling #1479495 08/04/13 02:42 PM 08/04/13 02:42 PM
Joined: Nov 2012 Posts: 358 western PA S Sb Valiant OP enthusiast
Sb Valiant OP enthusiast S Joined: Nov 2012 Posts: 358 western PA	I have a 69 340 block and it's bored out to like 26 or 27 over and going to be tq plate honed to size of the 30 over pistons. I hear you are supposed to fill a block before machining but it can also been done after machining. I kind of would like to fill it but if I could get your opinions on what to do that would be very helpful. Combo as of now is just going to be a 30 over 340 with about 12:1 cr, mildly ported W2's, M-1 intake manifold with lots of plenum work and port matched, 590 purple shaft cam, iron rockers, stock 3.31 stroke.

Re: Block Filling [Re: Sb Valiant] #1479496 08/04/13 02:53 PM 08/04/13 02:53 PM
Joined: Oct 2010 Posts: 2,408 Ambridge, Pa. R rickraw top fuel
rickraw top fuel R Joined: Oct 2010 Posts: 2,408 Ambridge, Pa.	I heard the crank & heads should be torqued in place then fill the block, then do ur full machine work. Get everything checked.

Re: Block Filling [Re: Sb Valiant] #1479497 08/04/13 02:57 PM 08/04/13 02:57 PM
Joined: Jun 2010 Posts: 311 Colorado Springs, Colorado Dartthunder340 enthusiast
Dartthunder340 enthusiast Joined: Jun 2010 Posts: 311 Colorado Springs, Colorado	Damn dude, we are brothers;)! Got the exact same thing and I filled it and let it reach full cure before starting any machine work. If I remember right it was almost a month it sat but I imagine my machine shop guy had other projects to get to in front of mine. Better get inside Ma. Looks like a storm's comin'.

Re: Block Filling [Re: rickraw] #1479498 08/04/13 03:01 PM 08/04/13 03:01 PM
Joined: Nov 2012 Posts: 358 western PA S Sb Valiant OP enthusiast
Sb Valiant OP enthusiast S Joined: Nov 2012 Posts: 358 western PA	Yea seems like alot of different ways I hear of people doing it. My main concern is it worth or could I fill the block from where I am already at which is a block thats bored out a few thousandths below 30 over and will be tq plate honed to size after pistons get measured.

Re: Block Filling [Re: Sb Valiant] #1479499 08/04/13 03:09 PM 08/04/13 03:09 PM
Joined: Feb 2005 Posts: 20,197 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,197 PA.	Just my opinion Brock but you need a filled block like I need another hole in my head. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Block Filling [Re: Sb Valiant] #1479500 08/04/13 03:17 PM 08/04/13 03:17 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Yea seems like alot of different ways I hear of people doing it. My main concern is it worth or could I fill the block from where I am already at which is a block thats bored out a few thousandths below 30 over and will be tq plate honed to size after pistons get measured. If it hasnt been honed yet do your filling now.. yes you should let it cure but if its a week old thats pretty close.. and yes the mains and heads should be torqued when you fill it(after you pour it in you torque the head down)... level it in both directions, fill it to the amount you want then torque the head down.. give it some time to cure(a couple of days) then rotate the block and do the same on the other side... if you are going to build big power it helps but at your compression and bore I dont think I would bother... a sonic check would help you make up your mind

Re: Block Filling [Re: MR_P_BODY] #1479501 08/04/13 03:23 PM 08/04/13 03:23 PM
Joined: Nov 2012 Posts: 358 western PA S Sb Valiant OP enthusiast
Sb Valiant OP enthusiast S Joined: Nov 2012 Posts: 358 western PA	What exactly do u mean by a week old? The block has been bored out like it is for a month now. The reason for wanting to do this is for the added hp that I might get over winter. By the way cr is going to vary it could be 11.1-11.5 to 13:1 depending on what we do.

Re: Block Filling [Re: Sb Valiant] #1479502 08/04/13 03:34 PM 08/04/13 03:34 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: What exactly do u mean by a week old? The block has been bored out like it is for a month now. The reason for wanting to do this is for the added hp that I might get over winter. By the way cr is going to vary it could be 11.1-11.5 to 13:1 depending on what we do. If you let the hard block cure for at least a week (on the second side) it shouldnt move much after the week... I still think if you sonic check it, it would help with you decision whether to fill or not.. JMO

Re: Block Filling [Re: MR_P_BODY] #1479503 08/04/13 05:12 PM 08/04/13 05:12 PM
Joined: Nov 2004 Posts: 4,330 Lynchburg, VA Leon441 master
Leon441 master Joined: Nov 2004 Posts: 4,330 Lynchburg, VA	For that little bit of overbore I would not fill unless I knew a cylinder was running thin. Leon Career best 8.02 @ 169 at 3050# and 10" tires small block power.

Re: Block Filling [Re: Leon441] #1479504 08/04/13 07:09 PM 08/04/13 07:09 PM
Joined: Aug 2003 Posts: 43,286 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,286 Bend,OR USA	Quote: For that little bit of overbore I would not fill unless I knew a cylinder was running thin. Leon Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Block Filling [Re: Cab_Burge] #1479505 08/05/13 02:15 PM 08/05/13 02:15 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Ditto! R.

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