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Big stroker in stock block
#1269912
07/18/12 12:22 PM
07/18/12 12:22 PM
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Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451
OP
master
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OP
master
Joined: Jan 2003
Posts: 4,296
Chicago, IL
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Hey guys - Been a while since I have visited, hope all is well with everyone. Got a hypothetical question for you. First, what are your thoughts of building a 528 or 540 in a stock block? It would be a lower rpm street engine, probably with a small solid cam and 10-1 compression. I know internal pickup is out, but otherwise the stroke should be doable, right?
Secondly, I have this wierd idea of running hp manifolds and ported 906's, and looking somewhat stock under the hood. Not FAST legal, but looking close to that. In a 67 Coronet wagon. OK, so feel free to give me your thoughts on this idea...go ahead, I can take it!
2 kids and a dog
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Re: Big stroker in stock block
[Re: TonyS451]
#1269913
07/18/12 12:34 PM
07/18/12 12:34 PM
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Joined: Jan 2003
Posts: 17,844
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,844
S.E. Michigan
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normal 528 and 540 ci combos require on an aftermarket block, because they require a 4.500" bore to arrive at that ci. 528ci is 4.5x4.150, 540ci is 4.5x4.25. A 4.150 or 4.250 stroke should not be a problem, but the 4.500 bore is pretty impractical for a stock block and is not going to happen. 4.375 bore is a more reasonable expectation for an OE stock block which will give 499ci with the 4.150 stroke or 511ci with the 4.250. Both combinations as well as slightly smaller 4.350 bore variants have been done to death just because they work/because a guy can't go much bigger on the bore without going to an aftermarket block. I thought you had built a 493/499 sometime in the past but maybe my memory is shot on that 
Rich H.
Esse Quam Videri
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Re: Big stroker in stock block
[Re: ZIPPY]
#1269914
07/18/12 12:49 PM
07/18/12 12:49 PM
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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A 4.350 bore in a stock block with a 4.5 stroke yields 535 cubes and ported 906 or other stock heads produces a BUNDLE of torque. Keep the cam duration some where between the specs for a 528 lift Mopar cam or a bit more. The reason being that ANDYF Tried a lot of cams and stock exhaust manifolds and bigger cams just flat didn't work with mainfolds and mufflers.
Keep the rotating assembly as light as you can to save bob wieght. .990 pins, 2.2 journal 7.10 rods, and the lightest piston they will make will allow a safe margin for a motor with stock caps up to about 5500 rpm. I ran a stock block with 6 pak rods, 4.5 stroke with stock main caps and the block lived right up till the used crank I had in it broke. (it was cracked when we built the motor) I got a lot of use out of the motor, racing it for years making 650 hp and going as high as 6200 rpm at the end with a big roller cam. So I don't see an issue with a properly built torque type street stroker motor.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Big stroker in stock block
[Re: TonyS451]
#1269919
07/18/12 01:27 PM
07/18/12 01:27 PM
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Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451
OP
master
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OP
master
Joined: Jan 2003
Posts: 4,296
Chicago, IL
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Stanton - Did 440 source also sell the external oiling parts? I saw on 440 source website that "some" of the 4.375 stroke cranks can clear with a stock pickup. Did tell they you what the varying factors were? I guess if I knew for certain I could get away with the internal pickup and "520" kit, that for me would be a no brainer vs the 535 kit and needed external oiling.
I have also have a holley street dominator intake and a holley 850...and will be looking at the mp 528 mechanical cam.
Stanton and RalleyA12 - care to share your combos?
2 kids and a dog
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Re: Big stroker in stock block
[Re: TonyS451]
#1269922
07/18/12 03:29 PM
07/18/12 03:29 PM
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Joined: Oct 2005
Posts: 8,871
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,871
Ontario, Canada
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Quote:
Stanton - Did 440 source also sell the external oiling parts? I saw on 440 source website that "some" of the 4.375 stroke cranks can clear with a stock pickup. Did tell they you what the varying factors were? I guess if I knew for certain I could get away with the internal pickup and "520" kit, that for me would be a no brainer vs the 535 kit and needed external oiling.
Stanton and RalleyA12 - care to share your combos?
I already had a complete dual line external system so that wasn't a concern. 440Source really didn't tell me anything ... I crunched all the numbers then just ordered the kit.
I used the 4.375 stroke, .055 overbore kit.
My combo (street motor)
'76 RB
440Source stroker kit with rod and bolt upgrade & balanced
Indy EZ1 heads - MW cnc
Indy dual plane
Lunati solid roller .600 lift
Crane lifters
Harland Sharp 1.5 rockers
K-Motion valvesprings
Smith Bros. pushrods
Milodon external dual-line system
440Source fluiddamper
Firecore dist., coil and wires
no carb yet - waiting for someone to make a 950 vac. sec. !!!
If I were doing it again I'd use an LB and build a 512 and I'd use aluminum main caps. Otherwise I wouldn't change a thing (yet!)
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Re: Big stroker in stock block
[Re: slantzilla]
#1269923
07/18/12 03:39 PM
07/18/12 03:39 PM
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Joined: Jan 2003
Posts: 5,762
Hot Rod Ridge
FastmOp
master
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master
Joined: Jan 2003
Posts: 5,762
Hot Rod Ridge
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I'm running the 541, 4.375 bore X 4.5 stroke, RB but with Indy CnCs and a roller lol My block is mostly stock. Just Studs and fill  This motor ain't bad, I need another few years out of it before I can say there good  built it 2010 been to the track a couple times a month since 
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Re: Big stroker in stock block
[Re: TonyS451]
#1269926
07/18/12 05:51 PM
07/18/12 05:51 PM
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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Tony, shoot ANDYF a pm and see if he will give you more input on the cam deal. One thought occurred to me that the problem with stock manifolds/hot cams may be the intake closing point gets to be too late for a poor breathing exhaust side. That might make a roller cam worth investigating because of the flow available with an early valve close.
Also a set of repro max wedge manifolds ought to work quite well, and may be the better route if obtainable inside budget.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Big stroker in stock block
[Re: TonyS451]
#1269928
07/18/12 07:45 PM
07/18/12 07:45 PM
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Joined: Feb 2005
Posts: 4,313
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,313
Prospect, PA
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Quote:
Quote:
normal 528 and 540 ci combos require on an aftermarket block, because they require a 4.500" bore to arrive at that ci.
528ci is 4.5x4.150, 540ci is 4.5x4.25.
A 4.150 or 4.250 stroke should not be a problem, but the 4.500 bore is pretty impractical for a stock block and is not going to happen.
4.375 bore is a more reasonable expectation for an OE stock block which will give 499ci with the 4.150 stroke or 511ci with the 4.250. Both combinations as well as slightly smaller 4.350 bore variants have been done to death just because they work/because a guy can't go much bigger on the bore without going to an aftermarket block.
I thought you had built a 493/499 sometime in the past but maybe my memory is shot on that
Yeah, had a few stroker engines over the years. I guess the true number would be 535 with a .030 over (4.35 bore)440 block and a 4.5 crank...Never tried anything bigger than a 505 in a 440 block, just checking because I know others have run a 4.5" crank in a stock block.
What kind of PU clearance did you have with the 505s? Based on the clearance that I had with the 4.25 arm suggests to me that the 4.375 would fit with minor clearancing and would not think twice about tring it. 
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Re: Big stroker in stock block
[Re: BSB67]
#1269930
07/19/12 10:55 AM
07/19/12 10:55 AM
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Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451
OP
master
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OP
master
Joined: Jan 2003
Posts: 4,296
Chicago, IL
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Quote:
Quote:
Quote:
normal 528 and 540 ci combos require on an aftermarket block, because they require a 4.500" bore to arrive at that ci.
528ci is 4.5x4.150, 540ci is 4.5x4.25.
A 4.150 or 4.250 stroke should not be a problem, but the 4.500 bore is pretty impractical for a stock block and is not going to happen.
4.375 bore is a more reasonable expectation for an OE stock block which will give 499ci with the 4.150 stroke or 511ci with the 4.250. Both combinations as well as slightly smaller 4.350 bore variants have been done to death just because they work/because a guy can't go much bigger on the bore without going to an aftermarket block.
I thought you had built a 493/499 sometime in the past but maybe my memory is shot on that
Yeah, had a few stroker engines over the years. I guess the true number would be 535 with a .030 over (4.35 bore)440 block and a 4.5 crank...Never tried anything bigger than a 505 in a 440 block, just checking because I know others have run a 4.5" crank in a stock block.
What kind of PU clearance did you have with the 505s? Based on the clearance that I had with the 4.25 arm suggests to me that the 4.375 would fit with minor clearancing and would not think twice about tring it.
The 505 cleared fine with a 1/2" pick up. Don't recall how much room, but it wasn't a concern. My 4.375 idea would not be a race application so a 3/8 pick up would be fine too. Thanks
2 kids and a dog
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