Re: B/RB Block girdle
[Re: ChevyTS]
#311393
05/08/09 12:54 AM
05/08/09 12:54 AM
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Joined: Sep 2005
Posts: 1,328
St. Louis, MO
mopardamo
pro stock
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pro stock
Joined: Sep 2005
Posts: 1,328
St. Louis, MO
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Hello,
Lots of good info about this subject. From what I understand there is problem harmonics at the higher hp loads and the RB block have a greater problem than the B blocks. BCR griddle will definitely help or get an after-market block.
Damon
Last edited by mopardamo; 05/08/09 12:55 AM.
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Re: B/RB Block girdle
[Re: blownzoom440]
#311398
05/08/09 06:51 AM
05/08/09 06:51 AM
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Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
Jacob Pitt
master
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master
Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
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I think the biggest improvement would be going to aluminum main caps. They do not transfer nearly as much punishment to the main webbing of the block. BCR makes a great product, I would get their main caps at least if not their whole setup if an aftermarket block is out of the question.
2013 NHRA D4 Stock Champ
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Re: B/RB Block girdle
[Re: blownzoom440]
#311400
05/08/09 11:25 AM
05/08/09 11:25 AM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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Quote:
i have used the chenowath 3/8 girdle,stock caps for about 5 yrs with 3 of them beating up on my engine with over 250 passes at over 750 hp.it would be interesting to see the sum of the parts and combonation.not that i can figure out what happined but am interested.
Its a 4.5 stroke with 6.8 rod custom Diamond and stage six maxwedge heads. 3/4 fill on the block.
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Re: B/RB Block girdle
[Re: ChevyTS]
#311401
05/08/09 11:39 AM
05/08/09 11:39 AM
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Joined: Jan 2003
Posts: 2,152
Fancy Farm Ky
wyoming
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,152
Fancy Farm Ky
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ChevyTS, I'd say you are definitly pushing the envelope on too much power for a stock block, but I'm suprised it has showed up that quick and to the degree mentioned, from my experiences detonation is a huge factor in capwalk, how much timing were you running? Compression ratio? Fuel? I think that a stock block does pretty well in high HP situations where it's not being run on the edge to get every bit of power, if I was running an index, heads up, ect where I was run on the ragged edge I'd for sure go aftermarket if the rules allowed, I think that there is a difference in block damage with the same HP out put depending how that engine is tuned. I'd be pretty unhappy though if I was in your predicament, you have some added "safety margin" in the girdle, but it didn't do what it should have done evidently.
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Re: B/RB Block girdle
[Re: ChevyTS]
#311403
05/08/09 12:10 PM
05/08/09 12:10 PM
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Joined: Jan 2003
Posts: 4,733
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,733
Moved to N.E. Tennessee
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Quote:
Its a 4.5 stroke with 6.8 rod custom Diamond and stage six maxwedge heads. 3/4 fill on the block.
Yep, you are way past where a stock 440 block is iffy. Could last hundreds of passes or one night. If the stock block was reliable for this type of engine there would be very little market for aftermarket blocks.
Quote:
I'd be pretty unhappy though if I was in your predicament, you have some added "safety margin" in the girdle, but it didn't do what it should have done evidently.
It did however keep a bunch of oil and parts off the track. Without the girdle he might have run over his crank and gone for a very nasty ride.
Last edited by GomangoCuda; 05/08/09 12:16 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: B/RB Block girdle
[Re: AndyF]
#311404
05/08/09 12:41 PM
05/08/09 12:41 PM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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Quote:
The long stroke might be the problem. Back it down to a 4.25 stroke and the stock block will probably last longer for you. With those heads you probably won't lose any power with the shorter stroke anyway.
The car ran 9.60 with the 4.150 stroke.
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Re: B/RB Block girdle
[Re: GomangoCuda]
#311405
05/08/09 12:44 PM
05/08/09 12:44 PM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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Quote:
Quote:
Its a 4.5 stroke with 6.8 rod custom Diamond and stage six maxwedge heads. 3/4 fill on the block.
Yep, you are way past where a stock 440 block is iffy. Could last hundreds of passes or one night. If the stock block was reliable for this type of engine there would be very little market for aftermarket blocks.
Quote:
I'd be pretty unhappy though if I was in your predicament, you have some added "safety margin" in the girdle, but it didn't do what it should have done evidently.
It did however keep a bunch of oil and parts off the track. Without the girdle he might have run over his crank and gone for a very nasty ride.
I think your right. I will have to step to an aftermarket block.
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Re: B/RB Block girdle
[Re: wyoming]
#311406
05/08/09 12:49 PM
05/08/09 12:49 PM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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Quote:
ChevyTS, I'd say you are definitly pushing the envelope on too much power for a stock block, but I'm suprised it has showed up that quick and to the degree mentioned, from my experiences detonation is a huge factor in capwalk, how much timing were you running? Compression ratio? Fuel? I think that a stock block does pretty well in high HP situations where it's not being run on the edge to get every bit of power, if I was running an index, heads up, ect where I was run on the ragged edge I'd for sure go aftermarket if the rules allowed, I think that there is a difference in block damage with the same HP out put depending how that engine is tuned. I'd be pretty unhappy though if I was in your predicament, you have some added "safety margin" in the girdle, but it didn't do what it should have done evidently.
Im sure timing and rpm was a factor. I just installed a chassis dyno at my shop. I think I will give it one more try and keep a closer eye on the tune. Thanks for the in put. BTW nice car. 
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...what about piston to head clearance, rod stretch, head bolts or studs?! 
