Show me a 500hp "default" stock stroke 340/360 recipie
#368598
07/06/09 09:15 PM
07/06/09 09:15 PM
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Joined: Jan 2003
Posts: 9,892 Weddington, N.C.
Streetwize
OP
master
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OP
master
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Posts: 9,892
Weddington, N.C.
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Maybe I'm bored with all the bore relieving or what but after about 9 stroker motors in a row I"m a little "stroked-out". I love strokers but sometimes, somehow it makes it almost too easy to make decent power anymore....you gotta admit the 'turn key' 'Kit' recipie approach has taken at least some of the Hotness out of Hot rodding when almost anybody can do it in a "pick one from column A one from column B" method So....Show me some old school, wind-em up TIGHT stock stroke horsepower. My first sub 12 pass was in a 340 dart with W2's and a 4 speed some 30 yrs ago; I still love the change in pitch you get only from a +7K small block! Keeping in the street theme show me a combo that will make 500hp with the SMALLEST cam required that'll get there. 500 Crank hp should put a typical A body (no real exotic suspension) into the high 10's pretty easy no matter how many cubes you got. Can't wait to fire up this 341"/318....just ordered my pushrods from Smith brothers after scoring a set of old school 273 rockers. I know it won't make 500 (but it could with a solid cam and more r's) but it should make at least 460 by 6500rpm which should be plenty for an 85" wheelbase! http://www.youtube.com/watch?v=wrB62FSfAoU
Last edited by Streetwize; 07/06/09 09:20 PM.
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: Darryls-Demon]
#368601
07/07/09 05:49 PM
07/07/09 05:49 PM
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Joined: Jan 2003
Posts: 9,892 Weddington, N.C.
Streetwize
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OP
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Posts: 9,892
Weddington, N.C.
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For a 340 to make about 500 it needs to make peak power around 7200 and for that you need some really good heads in the 270+ range and a cam in the 255+ @.050 with 1 3/4 headers and an 800+ cfm cam. Solid roller in the .575 range should make a high winding 340 make 500 pretty easy with better torque than a F/T. I've always felt 450 was pretty easy to attain and still be streetable, even with a hydraulic cm and a 6500 redline. i want to see if anybody has ever made a bonafide 500hp with a stock stroke 340 that was Street driven. Darryl.....I'm so tempted to try Goldmemember's solid F/T on this thing and I might just yet....with the wheelbase on this thing I want to "ease into the combo so i'll start with a slightly milder and 500-700 lower RPM cap and see how it goes....hte bottom end is there EASY if I want to turn up the wick
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: Darryls-Demon]
#368605
07/08/09 01:39 AM
07/08/09 01:39 AM
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Joined: Feb 2003
Posts: 1,730 Red Deer, Alberta
bill_greenwood
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,730
Red Deer, Alberta
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I'll chime in on this. My 360 is .040 over, with forged KB pistons, nominal compression is 12.5. It now has Eagle H-beam rods and very modest porting on iron heads. I'm running a Weiand X-terminator intake, which probably doesn't make quite as much power as, say, a Strip Dominator. The cam is the ancient but effective MP 528 solid, augmented by 1.6 rockers. Nothing fancy for an oil pan. I have 1 5/8 headers, which are probably on the small side. The original, which I blew up, had an ancient set of TRW slugs which were well worked over to remove weight, but were still heavier than the new KB's. With an LD4B intake, that motor made 450 (well, 447, actually) on the dyno. From that, I'd say I'm in the 480+ range right now. Next time around, we'll upgrade to a mild solid roller with similar duration and centerline to this cam, a bit more port work, and different intake. Yeah, I think 500 is within reach without going overboard.
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: Streetwize]
#368607
07/08/09 09:46 PM
07/08/09 09:46 PM
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Joined: Oct 2008
Posts: 1,894 Mira Loma, CA
69B3GT
top fuel
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top fuel
Joined: Oct 2008
Posts: 1,894
Mira Loma, CA
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Quote:
Any more out there?
C'mon small block guys, 500 in an A body should handle 600 in a b, right?
Im curious to see what else pops up since i plan on starting my 340 build in about a year and was hopeing for somewhere along 500 crank HP
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: Streetwize]
#368610
07/10/09 07:59 AM
07/10/09 07:59 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
Small blocks get no love
Being mainly a big block guy I sympathize....I'll bet a similar "B" motor thread would probably be 3 pages by now
I guess I don't see why a 500HP 408/416 recipie wouldn't make the same power w/stock stroke, but at a higher RPM, unless the heads didn't have enough CSA to run that high, but I don't see why a 360 couldn't make 500 HP under 7K even with a stock stroke
shortblock: KB107's at 0 deck
heads, I'd think any decently ported eddies, EQ's, RHS's, W2's, or even stock LA 340/360 would do it....something that flows in the 260-280@ .55" of lift should get you there
cam, either a somewhat aggressive solid flat tappet, or street solid roller, or even a hydraulic roller or somewhat aggressive hydraulic flat tappet, if you can control valvetrain harmonics/stability....anything in the 235-260@.050 range should get you there, depending on how good the heads are.
to make 500 HP @ 6500 RPM, you'd need to make ~400 ft-lbs at that RPM. I think that's certainly doable with a 360, and still have it relatively streetable.....
or just take a stock 318/360 magnum and put ~12-15lbs of boost on it
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Show me a 500hp "default" stock stroke 340/360 recipie *DELETED*
[Re: Streetwize]
#368611
07/10/09 09:27 AM
07/10/09 09:27 AM
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Joined: Dec 2005
Posts: 206 ohio
prochamp
enthusiast
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enthusiast
Joined: Dec 2005
Posts: 206
ohio
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Post deleted by prochamp
Last edited by prochamp; 07/12/09 11:09 AM.
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: prochamp]
#368613
07/10/09 11:37 AM
07/10/09 11:37 AM
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Joined: Jan 2007
Posts: 3,695 nc
emarine01
master
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master
Joined: Jan 2007
Posts: 3,695
nc
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Never dyno'd but pulled strong , stock crank 360 .030 over h beam rods with 0 deck kb 107s , home ported J heads 2.02/ 1.60 milled closed chamber .075 mopar .028 head gasket, hyd roller 242/248 @ .050 .600 lift 108 in @ 104.5, gasket matched m1 single plane 850 holley , 1/ 3/4 hooker headers, 3800 stall , Mud motor pulled strong to 6500na and 7000 with 125 No2 shot, very easy build and no piston to head prolems with over 500 passes about 50 on No2
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: Streetwize]
#368616
07/10/09 12:23 PM
07/10/09 12:23 PM
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Joined: Jan 2003
Posts: 9,892 Weddington, N.C.
Streetwize
OP
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OP
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Joined: Jan 2003
Posts: 9,892
Weddington, N.C.
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Quick, what's your .450 and .600 lift numbers look like? You've got enough flow at .700 to make ~625 my my "rule of thumb" but guessing you've got in the ballpark of 565 right there...or about as much as I'd want to throw at a cast crank anyway!! That sounds like one BadAzz Munchkin motor!!! S/St3040, That is VERY IMPRESSIVE power at a very low RPM from a short stroke motor, I know you're having to work the average 2500-6500 HP/Torque for the EM format. Like I said earlier with 340's the temptation is too easy for motors that love to rev to just throw the flow and cam to them and let the crank wind up tight to make HP.....so your combo is 'mucho impressivo'....I thinking you had some killer work (epoxy maybe?) in that Victor intake to bring the torque in early and use the HP up by 6500, I would think the smallish cam can only get you so much grunt in the middle without the intake pitching in.... That was the Highest Average per cube contest, wasn't it?
Last edited by Streetwize; 07/10/09 12:59 PM.
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Re: Show me a 500hp "default" stock stroke 340/360 recipie
[Re: Quicktree]
#368617
07/10/09 01:24 PM
07/10/09 01:24 PM
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Joined: Dec 2006
Posts: 1,178 Indy
FlyFish
super stock
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super stock
Joined: Dec 2006
Posts: 1,178
Indy
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Quote:
here's my combo, what do you think it makes? 360 .030 over probe light weight flat tops, down in the hole a few. eagle rods. stock stroke stock crank comp 308R street roller, [Email]262@.050/[/Email] 575lift 1.6 rockers 11.5:1 cr indy 360-1s fully ported by Dwayne, 317+ at 700 with good low to mid numbers indy intake/ 1050 dominator
I run it on a 50/50 mix could be street driven anywhere.
What kind of times do you wring out of it?
67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....
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