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Username Post: BBC block casting number 361959        (Topic#228757)
BBC-454 
Senior Member
Posts: 1400
BBC-454
Loc: Edmonton, Alberta
Reg: 05-11-03
10-31-09 05:01 PM - Post#1797448    

I finally got working on my big block project, and found the blocks casting number to be 361959, and it has hi per pass cast into the back. From what I found on a search it is a 78-87 block, and can be either two bolt or four bolt.

I didn't have long enough bolts so I couldn't get it on the stand today, hopefully tomorrow.

What does the hi perf pass mean for the block? 4 bolt?

It has the peanut port heads (346236) so those wont be going back on!
Josh R.L.
Licensed Automotive Mechanic
1966 Buick Special 2 door
1961 Chevrolet Apache 10 panel van
1995 GMC K2500
2011 VW Jetta TDI


 
fritz1990 
Senior Member
Posts: 6389
fritz1990
Age: 52
Loc: Kansas
Reg: 02-16-03
10-31-09 05:54 PM - Post#1797476    
    In response to BBC-454

Most all if not all BBC have "High Perf" cast into them. My 454 block that I used for my 496 had it too and is a 2 bolt main. I have tore apart many different 396, 402, 454 blocks and I don't remember seeing one that didn't.

Regards, Jeff
1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


Edited by fritz1990 on 10-31-09 05:55 PM. Reason for edit: No reason given.

 
BBC-454 
Senior Member
Posts: 1400
BBC-454
Loc: Edmonton, Alberta
Reg: 05-11-03
10-31-09 06:18 PM - Post#1797485    
    In response to fritz1990

Yeah that's what I have found out also. But there is still a chance it is 4 bolt! Have to pull the pan tomorrow and find out.

How common are OE steel cranks in 454's?
Josh R.L.
Licensed Automotive Mechanic
1966 Buick Special 2 door
1961 Chevrolet Apache 10 panel van
1995 GMC K2500
2011 VW Jetta TDI


 
fritz1990 
Senior Member
Posts: 6389
fritz1990
Age: 52
Loc: Kansas
Reg: 02-16-03
10-31-09 06:49 PM - Post#1797503    
    In response to BBC-454

My '73 454 block had a steel crank. Only one I have ever seen other than the high horsepower blocks. It was in a '73 1/2 ton pu.

Look at the side of the block where the oil filter pad is, if there are two 1/2" NPT plugs above it, it is a 4 bolt block.

One of my other 454 blocks is a 959 too, cast crank and 2 bolt. Came out of a 78 1 ton pu.

I have some more 454 blocks all 2 bolts and cast cranks.

Regards, Jeff
1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


Edited by fritz1990 on 10-31-09 06:51 PM. Reason for edit: No reason given.

 
BBC-454 
Senior Member
Posts: 1400
BBC-454
Loc: Edmonton, Alberta
Reg: 05-11-03
10-31-09 08:35 PM - Post#1797554    
    In response to fritz1990

Thanks Jeff
Josh R.L.
Licensed Automotive Mechanic
1966 Buick Special 2 door
1961 Chevrolet Apache 10 panel van
1995 GMC K2500
2011 VW Jetta TDI


 
BBC-454 
Senior Member
Posts: 1400
BBC-454
Loc: Edmonton, Alberta
Reg: 05-11-03
11-01-09 11:18 PM - Post#1798163    
    In response to BBC-454

Well no luck, it is a 2 bolt, cast crank. Oh well. Should I be ok to run a stroker crank and dart IE 308's if I use main cap studs?
Josh R.L.
Licensed Automotive Mechanic
1966 Buick Special 2 door
1961 Chevrolet Apache 10 panel van
1995 GMC K2500
2011 VW Jetta TDI


 
fritz1990 
Senior Member
Posts: 6389
fritz1990
Age: 52
Loc: Kansas
Reg: 02-16-03
11-02-09 04:57 PM - Post#1798518    
    In response to BBC-454

Don't know how much RPM's or power you are looking to build but I run a 2 bolt studded block. Spin 'er to 6500 everytime I'm in it. Unless you already have the Dart Iron eagles the 781's or 049's would do the same with bigger valves and some bowl blending. My

Regards, Jeff
1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


 
fritz1990 
Senior Member
Posts: 6389
fritz1990
Age: 52
Loc: Kansas
Reg: 02-16-03
11-02-09 07:02 PM - Post#1798628    
    In response to fritz1990

If you plan on using studs you should also plan on a line hone too. Same if you use ARP bolts instead.

Regards, Jeff
1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


 
BBC-454 
Senior Member
Posts: 1400
BBC-454
Loc: Edmonton, Alberta
Reg: 05-11-03
11-02-09 07:08 PM - Post#1798631    
    In response to fritz1990

No I don't have the heads yet, and I know where there a pair of 781's for 400 bucks.

If I do a line hone, will that affect how the bearings install?
Josh R.L.
Licensed Automotive Mechanic
1966 Buick Special 2 door
1961 Chevrolet Apache 10 panel van
1995 GMC K2500
2011 VW Jetta TDI


 
fritz1990 
Senior Member
Posts: 6389
fritz1990
Age: 52
Loc: Kansas
Reg: 02-16-03
11-02-09 08:03 PM - Post#1798685    
    In response to BBC-454

Do the 781's already have the larger 2.19-1.88 valves in them? If not that is pretty steep for a set compared to where I live. Might do some research on the Dart Iron Eagles, I don't know what they cost or what you are doing with your combo but there are probably better heads in that price range.

If you use studs it will generate more clamping force and make the main bearing bores out of round. Once you line hone it with the studs installed the bearing bores will become round again, to put it simply.

If you don't have it lined honed with the studs more than likely the crank will bind up and not turn or turn hard.

Regards, Jeff
1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


Edited by fritz1990 on 11-02-09 08:04 PM. Reason for edit: No reason given.

 
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