500cid low deck stroker fresh from dyno. Results?
#1672747
09/17/14 06:40 PM
09/17/14 06:40 PM
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Joined: Jul 2013
Posts: 84 Norway
cudaerik
OP
member
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OP
member
Joined: Jul 2013
Posts: 84
Norway
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Just got my new 500 cid low deck stroker engine of the dyno making 593HP and 610 ft-lbs of torque. I was expecting a bit more? Did I have an unrealistic goal hoping for 650HP based on the following compnents of all new parts?
71 block 0,40 over 440 Source stroker kit (4.150" stroke/6.760" rod) CNC ported eddy heads, milled to 10,75:1 in Compression (Hughes Racing) CNC ported eddy victor singel plane intake (Hughes Racing) Holley 850 ultra carb. 1,6:1 roller rockers (Hughes Racing) Huges Hydrualic Roller Camshaft (Hughes Racing) Intake Valve Lift 1.6 .576" Exhaust Valve Lift 1.6 .576" Intake Duration at .050" 252° Exhaust Duration at .050" 258°
Any thoughts on the set up and dyno results is much apriciated.
1970 Plymouth Cuda, 512cid on 230 400 block, 5 speed manual.(TKO 600) 1970 Dodge Charger 500, 446cid, 5speed manual.(TKO 600) 1969 Plymouth Roadrunner, 383cid, 5speed manual (Tremec TKX)
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: cudaerik]
#1672748
09/17/14 06:50 PM
09/17/14 06:50 PM
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Joined: Jan 2003
Posts: 11,712 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,712
Portage,michigan
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Not much camshaft for that big of motor. I suspect that is effecting the horsepower, both from a lift and duration standpoint. Don't know much a about hydraulic rollers.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: B3422W5]
#1672749
09/17/14 07:35 PM
09/17/14 07:35 PM
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Joined: Feb 2004
Posts: 2,073 Tulsa, Ok
WadeMetzinger
top fuel
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top fuel
Joined: Feb 2004
Posts: 2,073
Tulsa, Ok
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I agree, those numbers aren't bad for that combo, more cam and more compression and 4.25" stroke vs 4.15" stroke would have helped too.
Wade Metzinger 918-809-0987 71 Cuda 9.28@145 -1s, Pglide 68 Cuda 10.64@124 1.45 60's 318->390 eddys Moparts discount code on WIX - moparts www.Filter1.com
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: WadeMetzinger]
#1672750
09/17/14 07:39 PM
09/17/14 07:39 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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I agree small cam for a big block.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: cudaerik]
#1672751
09/17/14 07:39 PM
09/17/14 07:39 PM
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Joined: Mar 2009
Posts: 2,464 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,464
Sydney,Australia
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definitely see a lack of lift especially with a CNC head that should happily flow to .600+ lift how much more that will gain you is only a guess but some for sure
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: cudaerik]
#1672754
09/17/14 08:36 PM
09/17/14 08:36 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Thats 1.186 hp per cube.. thats not much.. as a rule strokers EAT duration and the lift is lacking.. and a 850 is a bit small on a big CI engine of that nature.. at what RPM do it make the peaks EDIT whats the use of this engine... and I assume this was on pump gas
Last edited by MR_P_BODY; 09/17/14 08:37 PM.
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: MR_P_BODY]
#1672757
09/17/14 10:30 PM
09/17/14 10:30 PM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
Thats 1.186 hp per cube.. thats not much.. as a rule
That's inline for the mild comp and cam IMO. This is not a 15.1 280*@.050 cam race motor build.
My old mild setup had 1.19 hp per cube and ran 10.40,s on pump gas. Same comp and duration as the OP,s Just different cubes. His numbers are inline, IMO
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: jim sciortino]
#1672759
09/18/14 12:25 AM
09/18/14 12:25 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Thats not real far from my combo. I use a 440Source 4.15 crank and .030 over 440 block for 493 cubes and around 600 hp. I have 10.6 comp with quench so it runs fine on 92 pump. I have the basic EZ heads and a solid flat tappet cam at .585 & .592 lift with 264 & 270 @ .050 and with 1.6 Hughes rockers its about .630 lift. Also I use the Indy dual plane intake and a Holley 850 DP. Never dynoed but has pushed my 3700 lb 63 to 10.70's @ almost 125 so far through the full exh and on 92 pump. And I do drive it the 45 mile one way ride to the track. Ron
Last edited by 383man; 09/18/14 12:28 AM.
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: Sport440]
#1672760
09/18/14 12:34 AM
09/18/14 12:34 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Thats 1.186 hp per cube.. thats not much.. as a rule
That's inline for the mild comp and cam IMO. This is not a 15.1 280*@.050 cam race motor build.
My old mild setup had 1.19 hp per cube and ran 10.40,s on pump gas. Same comp and duration as the OP,s Just different cubes. His numbers are inline, IMO
He had higher expectations that what he got... just saying why... and so far he hasnt said on what fuel but I assume its 92 with that compression
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: gregsdart]
#1672764
09/18/14 12:09 PM
09/18/14 12:09 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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Not bad at all for that combo, should be fun! A 630 solid roller and 1000cfm 4150 carb would make a difference if you ever want to go that route. I'm getting ready to fire up my new 500" Duster build, it has MW cnc Eddy's and an Indy single plane intake. I'm WAY undercammed with the solid 557 purpleshaft but I don't care cuz I built this car to cruise, and it won't even have enough tire or suspension to hold this much motor anyways.
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: ProSport]
#1672765
09/18/14 12:38 PM
09/18/14 12:38 PM
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Joined: Jan 2003
Posts: 9,875 Weddington, N.C.
Streetwize
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master
Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
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That's pretty close to my old Stage V 508 RB motor I built several years back, About 610hp/620 lb/ft would be about right for a std port (non MW)motor but with a very broad flat torque curve, I suspect the long runner Victor intake might not be the best fit and might be hurting the curve a little (but not much), I ran an extremely well-ported Street dominator on mine. I like a 1000HP Pro-systems carb on that combo, I think I have my old build sheet if it helps. The 850 will be a little small IMO.
I think your cam is about right for what you're doing, that same duration was awesome on the street in mine. A HR cam is going to limit your lift to ~.600 anyway, can't go much higher unless you switch to a solid and probably not worth it cause all the noticeable power gain will occur above the peak torque RPM....you'll never notice it 85% of the time.
you didn't mention your header size but you'll definitely need a 1 7/8" or 2" primary with a 3 1/2" collector, a 3" collector will lower your HP trajectory substantially vs a 3 1/2"
My old 508 motor is still kicking butt on the street, PM Paul PHJ426 he can tell you all about it.
Last edited by Streetwize; 09/18/14 12:55 PM.
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Re: 500cid low deck stroker fresh from dyno. Results?
[Re: cudaerik]
#1672766
09/18/14 02:00 PM
09/18/14 02:00 PM
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Joined: Aug 2003
Posts: 43,181 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,181
Bend,OR USA
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Dyno tests results are dependent on many things like the lobe center on the cam, the actual weather conditions outside the dyno cell, the amount of tuning done on the dyno. I've seen motors pick up 50 HP and similar torque on the dyno from tuning the carb, igntion and cam timing I don't finish the final tune up now until the motor is in the car BTW, less power in a stick car can be your friend, less tire spin
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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