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Hemi Cross Bolt Main Bolt Head Markings #1786194
03/22/15 09:15 PM
03/22/15 09:15 PM
Joined: Jan 2003
Posts: 42,702
Spokane Washington
ScottSmith_Harms Offline OP
Mr Wizzard
ScottSmith_Harms  Offline OP
Mr Wizzard

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Posts: 42,702
Spokane Washington
What original bolt head markings have you guys seen on your Hemi's? When answering please include the model year of your engine.

Thanks!

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: ScottSmith_Harms] #1786195
03/22/15 11:40 PM
03/22/15 11:40 PM
Joined: Aug 2008
Posts: 622
West Central Wi.
1969 HEMI R-T Offline
mopar
1969 HEMI R-T  Offline
mopar

Joined: Aug 2008
Posts: 622
West Central Wi.
here is what one of mine has. I have 4. the other two are H bolts and I don't believe they are correct. engine is built Tuesday April 2nd 1969.. I am looking for the other two if my (4) are correct.


HEMI,S ARE FOREVER!!!
Re: Hemi Cross Bolt Main Bolt Head Markings [Re: 1969 HEMI R-T] #1786196
03/23/15 09:36 AM
03/23/15 09:36 AM
Joined: May 2005
Posts: 6,446
NJ-USA
H
HPMike Offline
master
HPMike  Offline
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H

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NJ-USA
Got three I am building here now...2 68 casting..1 69...The 69 has an ARP stud kit, so forget that one..(I think I saved the orig hardware, though)

The 68's...

Mains= "TR"

Cross = R-S-C (the letters are arranged around the perimeter of the bolt head )..

If needed I can photograph for closer detail..

MB

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: HPMike] #1786197
03/23/15 09:39 AM
03/23/15 09:39 AM
Joined: Jan 2003
Posts: 42,702
Spokane Washington
ScottSmith_Harms Offline OP
Mr Wizzard
ScottSmith_Harms  Offline OP
Mr Wizzard

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Posts: 42,702
Spokane Washington
Thanks guys,

Also, does anyone have a known original with a mix of markings on the same engine?

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: ScottSmith_Harms] #1786198
03/23/15 11:57 AM
03/23/15 11:57 AM
Joined: Jan 2006
Posts: 2,049
New York
VCODE Offline
top fuel
VCODE  Offline
top fuel

Joined: Jan 2006
Posts: 2,049
New York
Found these pictures on Moparts at some point Scott,

Last edited by VCODE; 03/23/15 11:58 AM.

Mom & Dad let me buy a brand new 70 Challenger R/T 440 Six-Pack Super Trac Pack when I was 17 (Robert what is a 440 Six-Pack)
Re: Hemi Cross Bolt Main Bolt Head Markings [Re: VCODE] #1786199
03/23/15 11:58 AM
03/23/15 11:58 AM
Joined: Jan 2006
Posts: 2,049
New York
VCODE Offline
top fuel
VCODE  Offline
top fuel

Joined: Jan 2006
Posts: 2,049
New York
2


Mom & Dad let me buy a brand new 70 Challenger R/T 440 Six-Pack Super Trac Pack when I was 17 (Robert what is a 440 Six-Pack)
Re: Hemi Cross Bolt Main Bolt Head Markings [Re: VCODE] #1786200
03/23/15 12:31 PM
03/23/15 12:31 PM
Joined: Jan 2014
Posts: 60
FL
M
moparwizard Offline
member
moparwizard  Offline
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M

Joined: Jan 2014
Posts: 60
FL
The 11/11/68 casting 70' model year engine I had used the R-S-C bolts

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: moparwizard] #1786201
03/23/15 08:54 PM
03/23/15 08:54 PM
Joined: Jan 2003
Posts: 42,702
Spokane Washington
ScottSmith_Harms Offline OP
Mr Wizzard
ScottSmith_Harms  Offline OP
Mr Wizzard

Joined: Jan 2003
Posts: 42,702
Spokane Washington
Another related question. Flat washers? Lock washers? Both? What diameters?

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: ScottSmith_Harms] #1786202
03/24/15 03:30 AM
03/24/15 03:30 AM
Joined: Jan 2007
Posts: 1,660
Mi,U.S.A.
M
mike s Offline
top fuel
mike s  Offline
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M

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Mi,U.S.A.
1966 engine has 3/8 thick flat washers.


Leave the gun.......take the Cannoli's....Mike
Re: Hemi Cross Bolt Main Bolt Head Markings [Re: ScottSmith_Harms] #1786203
03/24/15 11:10 AM
03/24/15 11:10 AM
Joined: May 2005
Posts: 6,446
NJ-USA
H
HPMike Offline
master
HPMike  Offline
master
H

Joined: May 2005
Posts: 6,446
NJ-USA
Quote:

Another related question. Flat washers? Lock washers? Both? What diameters?




Never seen lock washers...only flat...the OD is barely smaller than the spot facing on the side of the block..

MB

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: HPMike] #1786204
03/24/15 12:04 PM
03/24/15 12:04 PM
Joined: Jan 2003
Posts: 42,702
Spokane Washington
ScottSmith_Harms Offline OP
Mr Wizzard
ScottSmith_Harms  Offline OP
Mr Wizzard

Joined: Jan 2003
Posts: 42,702
Spokane Washington
Just so all of you know, I'm trying to help a local guy get the details right on his engine, he had a Chevy shop do his engine build and claim that "it's 100% correct" and so far I've found a number of things that I would deem either flat out "incorrect" or at least highly questionable at this time, just looking for other possibilities before I advise him on my findings.

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: VCODE] #1786205
03/25/15 12:02 AM
03/25/15 12:02 AM
Joined: Nov 2003
Posts: 964
Southeast Virginia
68jim Offline
super stock
68jim  Offline
super stock

Joined: Nov 2003
Posts: 964
Southeast Virginia
Quote:

Found these pictures on Moparts at some point Scott,




That picture is from my spare block - 69 casting NOS block. That bolt has never been out of the block.

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: 68jim] #1786206
03/25/15 12:45 AM
03/25/15 12:45 AM
Joined: Jan 2003
Posts: 42,702
Spokane Washington
ScottSmith_Harms Offline OP
Mr Wizzard
ScottSmith_Harms  Offline OP
Mr Wizzard

Joined: Jan 2003
Posts: 42,702
Spokane Washington
Thanks Jim, are they all the same RSC markings? These are what I have seen as well BTW.

Have any of you seen any other styles other than the first one posted?

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: ScottSmith_Harms] #1786207
03/26/15 12:12 AM
03/26/15 12:12 AM
Joined: Nov 2003
Posts: 964
Southeast Virginia
68jim Offline
super stock
68jim  Offline
super stock

Joined: Nov 2003
Posts: 964
Southeast Virginia
The bolts are all the same on the NOS block. I will have to get back with you as far as the mid-68 block in the RR now. I can talk more with you at the MATS.

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: 68jim] #1786208
03/27/15 11:22 AM
03/27/15 11:22 AM
Joined: Feb 2003
Posts: 162
Missouri
3
3_RTs Offline
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3_RTs  Offline
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3

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Posts: 162
Missouri
Scott, I have a '66 block that has "TR" bolts for cross main bolts. Is this possible. I cannot verify that the motor has or hasn't been apart though.

Re: Hemi Cross Bolt Main Bolt Head Markings [Re: 3_RTs] #1786209
03/28/15 02:03 AM
03/28/15 02:03 AM
Joined: Dec 2003
Posts: 4,651
northwest USA
N
NANKET Offline
master
NANKET  Offline
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N

Joined: Dec 2003
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northwest USA
Quote:

Scott, I have a '66 block that has "TR" bolts for cross main bolts. Is this possible. I cannot verify that the motor has or hasn't been apart though.




I'm looking at a 66 block, it has the same TR bolts.


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