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Small block race block
#921974
02/06/11 01:05 AM
02/06/11 01:05 AM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
OP
master
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OP
master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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Whats the deal with the xr1 blocks? Why are they not being used? Does anybody run one?
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: Small block race block
[Re: theclutcher]
#921976
02/06/11 12:40 PM
02/06/11 12:40 PM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
OP
master
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OP
master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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Well then who has one and whats the combo?
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: Small block race block
[Re: 1967dartgt]
#921977
02/06/11 12:45 PM
02/06/11 12:45 PM
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Joined: Mar 2005
Posts: 2,172
Ohio
theclutcher
top fuel
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top fuel
Joined: Mar 2005
Posts: 2,172
Ohio
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I'm sure they will post.
Looking for one?
Last edited by theclutcher; 02/06/11 12:46 PM.
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Re: Small block race block
[Re: S/ST 3040]
#921979
02/06/11 02:13 PM
02/06/11 02:13 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Vic... looks like they damn near missed the boss area on the upper head bolt holes on the first and third holes looks like a nice block.... also what are the holes above each lifter bores... maybe oil holes(oil letter inners  ) 
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Re: Small block race block
[Re: MR_P_BODY]
#921980
02/06/11 02:45 PM
02/06/11 02:45 PM
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Joined: Mar 2005
Posts: 2,489
Pacifica, CA
Devilbrad
top fuel
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top fuel
Joined: Mar 2005
Posts: 2,489
Pacifica, CA
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Quote:
Vic... looks like they damn near missed the boss area
on the upper head bolt holes on the first and third holes
looks like a nice block.... also what are the holes
above each lifter bores... maybe oil holes(oil letter
inners )
There is a reason those holes are offset, I just can't remember why, LOL It was in another thread. As for the holes over the bushings, I'm assuming they are access holes to drill oiling holes in the bushings after they are pressed in.
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Re: Small block race block
[Re: MR_P_BODY]
#921981
02/06/11 02:50 PM
02/06/11 02:50 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Vic... looks like they damn near missed the boss area
on the upper head bolt holes on the first and third holes
looks like a nice block.... also what are the holes
above each lifter bores... maybe oil holes(oil letter
inners )
yea no kidding, I don't know a thing about block castings but why is it so hard to build a block with out core shift and some of the other known problems? you would think this day and age they could correct those issues. not saying this block has them just curious.
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Re: Small block race block
[Re: MR_P_BODY]
#921982
02/06/11 02:54 PM
02/06/11 02:54 PM
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Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
S/ST 3040
master
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master
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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Quote:
Vic... looks like they damn near missed the boss area
on the upper head bolt holes on the first and third holes
looks like a nice block.... also what are the holes
above each lifter bores... maybe oil holes(oil letter
inners )
Mike, It's my belief, the XR blocks were initially cast soley for P-7 heads. (XR-2)
On the XR-2 version, the bolt holes are located in the center of the bosses.
Notice the extra head bolt boss at the rear of the block. (2nd picture)
P-7 heads use 20 studs.
I asked Kent about machining the XR to accept the P-5 HEMI. I think it's possible
but, doubt it will happen. 430"+ P-5 HEMI??!! 
Holes drilled to the inside of the lifter bores are pilot holes to the oil feed. Then the
pre-drilled bushings were pressed in and honed. Just happens to be the way this
particular machinist chose to do it.
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Re: Small block race block
[Re: S/ST 3040]
#921987
02/06/11 04:23 PM
02/06/11 04:23 PM
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Joined: Mar 2005
Posts: 2,172
Ohio
theclutcher
top fuel
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top fuel
Joined: Mar 2005
Posts: 2,172
Ohio
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 Another Screamer!!! Need to find a suitable rpm greamlin. What crank with the 4.150 bore?
Last edited by theclutcher; 02/06/11 04:26 PM.
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Re: Small block race block
[Re: S/ST 3040]
#921989
02/06/11 04:31 PM
02/06/11 04:31 PM
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Joined: Dec 2006
Posts: 3,395
Pa
Hot 340
master
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master
Joined: Dec 2006
Posts: 3,395
Pa
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Quote:
340!
You got a pic of the block from the bellhousing area?
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Re: Small block race block
[Re: S/ST 3040]
#921990
02/06/11 04:32 PM
02/06/11 04:32 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
OK......
I was kidding. 447" with W-8s
4.155" x 4.125"
Gonna run one of them big blocks hidden in a small
block cover.... cool 
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Re: Small block race block
[Re: S/ST 3040]
#921991
02/06/11 04:38 PM
02/06/11 04:38 PM
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Joined: Mar 2005
Posts: 2,172
Ohio
theclutcher
top fuel
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top fuel
Joined: Mar 2005
Posts: 2,172
Ohio
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Ya know how to pull my strings you dawg. I'm a sucker for RPM... elaborate on your W8's if you can. Any numbers? Callies crank? Want to compare to some castings here.  oops getting off topic... sorry
Last edited by theclutcher; 02/06/11 04:40 PM.
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