Re: 4" Stroke Small block
[Re: SCDaytona]
#1517959
10/15/13 05:08 PM
10/15/13 05:08 PM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
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Joined: Jan 2003
Posts: 6,266
Renton Washington
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How much power is he trying to make? Ditch the 4 bolt main Idea. I think with a W2 head it will live a long happy life.
Sonic check the block for starters. You can't build mansion with a foundation of pebbles.
Last edited by Triple Threat; 10/15/13 05:10 PM.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: 4" Stroke Small block
[Re: BJS racing]
#1517964
10/15/13 06:57 PM
10/15/13 06:57 PM
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Joined: Jan 2003
Posts: 32,394
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Quote:
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you will not get 4 bolt mains on a stock block i don't think.
Actually Tony you can but in most cases it will actually make the block weaker. The weakness in a small block is in the main web. Drilling for the 4 bolt takes away from the little that is there.
no kidding that was my point I wouldn't do it
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Re: 4" Stroke Small block
[Re: Crizila]
#1517965
10/15/13 06:58 PM
10/15/13 06:58 PM
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I'm trying to help a buddy of mine who wants to put together a 4" stroker with a 340 stock block. Plans are to put in 4 bolt mains and 1/2 fill the block. Probably 0.030 over as well. This will be using W2 heads. Is this block going to hold up or not? Trying to keep this on budget and an R block is not in his budget.
I'm doing it. No dyno #'s on the motor, but based on car weight, speed, ET, I'm guessing around 650HP. 360 stock block, 1/2 filled, 4 blt. Milodon caps. Motor in a blown application.
good luck, but why spend all that money and use a stock block?
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Re: 4" Stroke Small block
[Re: Dustedu]
#1517967
10/15/13 08:46 PM
10/15/13 08:46 PM
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Joined: Jan 2003
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Sorry guys but I don't see the big deal, we have two engines like this. One with W5's and one with ported eddies that both have been punished with nos I've been Putin alot of nos to the duster engine for the last four years and it seems to be ok. Maybe we are just lucky
how fast is it?
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Re: 4" Stroke Small block
[Re: Dustedu]
#1517968
10/15/13 08:51 PM
10/15/13 08:51 PM
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Joined: Nov 2004
Posts: 4,330 Lynchburg, VA
Leon441
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Lynchburg, VA
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I ran a lot of power on a 70" 360 block bored 4.100" with no filler and stock caps.
If I were putting aftermarket caps on and filling I would prefer to use the Pro Gram caps with the splayed bolts.
Guess I was retarded for all those years I was winning local races with a stock block and NOS.
If I were going to go the race block direction I would just go ahead and go R3 with W7 or better heads and 48 degree lifters.
As long as I am holding back with a 59 degree deal I would just take the risk with the stock block.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: 4" Stroke Small block
[Re: SCDaytona]
#1517973
10/15/13 10:43 PM
10/15/13 10:43 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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Hilltown Pa
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I ran one for a while 421" with eddies,then battens and finally indys had a 618 roller and many nos passes. 69 340 block with stock caps, sold it to a guy in Ohio so it might still be running.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: 4" Stroke Small block
[Re: SCDaytona]
#1517974
10/15/13 10:49 PM
10/15/13 10:49 PM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
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acworth / N. georgia - south e...
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just sonic the block first.. i have factory 72 360 block bored.040 ,factory crank and polished factory rods.. light pistons and balanced assy. no filler and stock caps...line bored.. running 6.67 at 3410lbs.built this motor in o4
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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