Re: Stock stroke 360 on the dyno
[Re: Brian Hafliger]
#949278
03/13/11 01:54 PM
03/13/11 01:54 PM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
super stock
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super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Do you mind me asking what size jets you had in it?
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Stock stroke 360 on the dyno
[Re: ademon]
#949281
03/13/11 02:25 PM
03/13/11 02:25 PM
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Joined: Feb 2006
Posts: 1,057 The Great White North
RAMM
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,057
The Great White North
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The Wilson 4 hole is worth about 14 hp on this combo and the cold intake was worth another 13 hp on that particular test. Realistically this engine was producing a solid 425 hp with 430 lb/ft every test. Icing down the intake was purely for getting some big numbers to print out and have some fun with the 383 Chev guys at the parking lot this summer. 460 ft/lbs from a basic stock stroke 360 does not happen. J.Rob
2009 PHR\EMC Competitor 2010 PHR\EMC Competitor 2011 PHR\EMC Competitor 2012 PHR\EMC Competitor 2013 PHR\EMC Competitor 2014 HotRod/EMC Competitor 2015 HotRod/EMC NoShow 2016 HotRod/EMC 3rd place SPEC Bigblock 2018 HotRod/EMC 7th place G3
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Re: Stock stroke 360 on the dyno
[Re: W5DART66]
#949286
03/13/11 11:01 PM
03/13/11 11:01 PM
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Joined: Feb 2006
Posts: 1,057 The Great White North
RAMM
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,057
The Great White North
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Street of course--I'm not that smart but I'm smart enough to know when I'm way outgunned. I'm hoping to crack the top ten in a field of 20 presuming I've been accepted. Will you be there Brett? J.Rob
2009 PHR\EMC Competitor 2010 PHR\EMC Competitor 2011 PHR\EMC Competitor 2012 PHR\EMC Competitor 2013 PHR\EMC Competitor 2014 HotRod/EMC Competitor 2015 HotRod/EMC NoShow 2016 HotRod/EMC 3rd place SPEC Bigblock 2018 HotRod/EMC 7th place G3
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Re: Stock stroke 360 on the dyno
[Re: domingo]
#949290
03/14/11 01:08 AM
03/14/11 01:08 AM
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Joined: Dec 2008
Posts: 415 Peru
cbarracuda
mopar
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mopar
Joined: Dec 2008
Posts: 415
Peru
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Quote:
Quote:
Good engine, good numbers, 500 hp in a 360 pump gas. There is something that caught my attention: a 1978 block, I guess a factory block, cut 0.40 when every book recommends 0.20 maximun 0.30. good power. I have a 1971 360 and plan to cut this 0.80. Congratulations on your results!
They have sonic testers up there so they know how much is safe to bore out b4 the walls get too thin. Which year is it dosnt really mean a thing. The earlier castings being thicker are just myths.
I think your 71 360 is the same casting as a 340 block...I have heard it was like that with the first years of the 360 when production overlapped with the 340...that would be the 71-73 360 castings. Still Id be afraid to cut that much without having a sonic tester. You might end up with cylinders with bores as thick as a coke can and ruin a good 360 block.
you are right about 1971 to 1973 360 factory blocks, same casting as a 340. i had the two blocks together, a 1990 and 1971 360 and can tell the difference in cylinder wall. of course a sonic test will tell you if the block is good for more like a 4.100
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Re: Stock stroke 360 on the dyno
[Re: domingo]
#949293
03/14/11 03:53 AM
03/14/11 03:53 AM
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Joined: Feb 2006
Posts: 1,949 land of 10,000______'s
BDS871Cuda
top fuel
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top fuel
Joined: Feb 2006
Posts: 1,949
land of 10,000______'s
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Quote:
if you are gonna cut it 0,080" it would be like cutting a 340 0,040" over. Thats close to sonic testing territory already, specially with a block that has seen service life and has the water jackets a bit corroded.
Id just cut it to std 340 bore size at 4,04" if it will clean uo at that. Why push it if you dont have a sonic tester? Id rather have thick walls than 0,040" more bore. Its not like you are gonna shroud the valves!
I agree straight thick cylinders are far better.
Most pro builders don't put to much into bore size in a stock block. Most agree thicker cylinder walls are much better.
372 CI or 365 CI not much difference in HP. But!!! cylinder flex will lose HP.
Snap your neck, mega G-force launch, is all I want!
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Re: Stock stroke 360 on the dyno
[Re: BDS871Cuda]
#949294
03/14/11 11:27 AM
03/14/11 11:27 AM
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Joined: Jan 2003
Posts: 9,672 Lima, Peru
domingo
EL Master
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EL Master
Joined: Jan 2003
Posts: 9,672
Lima, Peru
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Quote:
Quote:
if you are gonna cut it 0,080" it would be like cutting a 340 0,040" over. Thats close to sonic testing territory already, specially with a block that has seen service life and has the water jackets a bit corroded.
Id just cut it to std 340 bore size at 4,04" if it will clean uo at that. Why push it if you dont have a sonic tester? Id rather have thick walls than 0,040" more bore. Its not like you are gonna shroud the valves!
I agree straight thick cylinders are far better.
Most pro builders don't put to much into bore size in a stock block. Most agree thicker cylinder walls are much better.
372 CI or 365 CI not much difference in HP. But!!! cylinder flex will lose HP.
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Re: Stock stroke 360 on the dyno
[Re: domingo]
#949295
03/14/11 12:19 PM
03/14/11 12:19 PM
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,924
Weddington, N.C.
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I'm still scratching my head as to why I pulled out a perfectly good 341" (3.91" 318 factory roller block with an MP 3.55" 4340 stroke) to put in the 414, I'll bet this puppy made about 440hp (PLENTY!!) with a 236/240@.050 Hyd Roller and stock E-heads.
I agree, never take the bores out any more than they need to, keeping the meat in the bores of a stock block is worth more power than a couple extra "ego" cubes.
Last edited by Streetwize; 03/14/11 12:20 PM.
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