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Re: The perfect stroke?
[Re: 65signet]
#385221
07/26/09 04:35 PM
07/26/09 04:35 PM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
master
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master
Joined: Nov 2004
Posts: 2,825
Sk. Canada
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Quote:
340 i think is the best, pound for pound stock 383 or 440 car would get beat by a 340 car.
The only diff between a 340 and a 383 is, you can put big heads on a 383 and make some serious horse power.
340s have little tiny bores. 
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Re: The perfect stroke?
[Re: RemCharger]
#385222
07/26/09 05:16 PM
07/26/09 05:16 PM
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Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
cudabin
super stock
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super stock
Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
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OK, so if you build a low deck 540 with 4.5 bore an 4.250 stroke and use CNC ported 440-1 heads with 382cfm flow at .800 and 345cc intake volume w/ right roller cam,
Or build a 557" with 4.5 bore and 4.375 stroke, same heads, choose proper cam, how much difference in the powerband between the 2 strokes?
Thoughts?
Arnie
67 Cuda 8.48@ 158.7 mph 1.18 60' 2,600 DA(so far...)
70 Super Bee 440 Six Pack 4-speed. 13.2 @ 104 Stock exhaust/Street tires.
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Re: The perfect stroke?
[Re: Thumperdart]
#385225
07/26/09 06:19 PM
07/26/09 06:19 PM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
OP
master
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OP
master
Joined: Jan 2007
Posts: 3,695
nc
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Re: The perfect stroke?
[Re: Brian Hafliger]
#385226
07/27/09 12:50 AM
07/27/09 12:50 AM
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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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Quote:
Quote:
OK, so if you build a low deck 540 with 4.5 bore an 4.250 stroke and use CNC ported 440-1 heads with 382cfm flow at .800 and 345cc intake volume w/ right roller cam,
Or build a 557" with 4.5 bore and 4.375 stroke, same heads, choose proper cam, how much difference in the powerband between the 2 strokes?
Thoughts?
Arnie
I would guess at around 300-500rpm peak HP and TQ...maybe?
HP does not always go up with more cid...even if you use a larger cam to try to make up for the cid, the intake system and exhaust system will determine more or less just how much effect the difference in cid makes.
I wouldn't think it would be worth the extra $$$ for that .125 stroke going from a 470cid Arnie!
Thats only a three percent increase in size, might not even vary by 200 rpm?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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