407" low deck build
#1920102
09/26/15 03:53 PM
09/26/15 03:53 PM
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Joined: Nov 2009
Posts: 191 WI
mopar873
OP
member
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OP
member
Joined: Nov 2009
Posts: 191
WI
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What experience/results has anyone had doing a .030 bore stock stroke low deck? I'm starting to think I might want to try one. I want a street strip turbo combo for an Abody. I was on a kick of a 451" but now I'm second guessing. I would think that an aftermarket stock stroke crank with BME rods and thick crowned Pistons would be pretty durable. I think with moderate boost on this size engine I would be right at what the block could take with bulletproof guts in the bottom. I've been thinking of this a lot and a recent comment by Jerry Kathe in a different thread goes along the line of the same thinking. Lightweight quality components, lower piston speed, and better bore integrity especially at the bottom of the cylinder? Not a lot of stroke, not turning a ton of rpm, and good geometry? I have a 230 block and a 630 block to work with, that's why I ask.
Last edited by mopar873; 09/26/15 04:06 PM.
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Re: 407" low deck build
[Re: mopar873]
#1920157
09/26/15 06:13 PM
09/26/15 06:13 PM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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If you're going with efi, I say go for it. If you're going carb, get a more mistake proof block.
"use it 'till it breaks, replace as needed"
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Re: 407" low deck build
[Re: mopar873]
#1920490
09/27/15 11:00 AM
09/27/15 11:00 AM
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Joined: Jan 2003
Posts: 234 Chapel Hill, NC
orangecrush
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 234
Chapel Hill, NC
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I built one about 10 years ago that I am running in a 71 Challenger R/T street car and it is still running good. 400 block .030 over, Ross pistons, Manley 6.965 H-Beams, stock 383 crank, 1/2" pickup, edelbrock rpm heads, cut .060 for 71cc, block "0" decked for 10.8 CR, Comp Street XR74R Solid Roller, 750DP Performer RPM Intake, TTI 1 7/8 headers, 3" out the back through Ultraflows. It is a 4 speed car, 3.55. I wish I knew how much power it was making but I never dyno'd it. I know it is fun on the street. Those Manley rods in that size are no longer available. I got the idea to build this combo from Andy F.
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Re: 407" low deck build
[Re: TRENDZ]
#1921556
09/28/15 11:53 PM
09/28/15 11:53 PM
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Joined: Jan 2003
Posts: 285 Northern IL
meathead66
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 285
Northern IL
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If you're going with efi, I say go for it. If you're going carb, get a more mistake proof block. Sorry but where's the mistake in a 230 block for the OP's application?
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Re: 407" low deck build
[Re: mopar873]
#1922010
09/29/15 08:40 PM
09/29/15 08:40 PM
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Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
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Other options are to find a 440 aftermarket crank that needs a regrind. It should be cheap enough needing grinding. Then you can offset grind it down to 3.58 or all the way to 3.50 if you were to go with a 2.1 SBC rod bearing. The nice thing about going with a 440 after market used crank is you can probably get a full history on its' life, and you can build an extremely light rotating assembly by going to the chevy bearing sizes and keeping the piston pin at minimum needed hieght. I would start by finding out what the piston manufacturers want as far as minimum compression height and work from there on rod choices.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 407" low deck build
[Re: mopar873]
#1922038
09/29/15 09:26 PM
09/29/15 09:26 PM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Don't put hypers in a blower/ turbo engine.
"use it 'till it breaks, replace as needed"
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