New Dyno Numbers for 427
Thread Starter
Drifting
Joined: Jul 2000
Posts: 1,289
Likes: 0
From: Newport Beach, CA, USA
New Dyno Numbers for 427
Today I went to MMS to see if we had hidden ponies and torqies since the car has been a bit rich.
Well, Mike Morgan did an excellent job! Before and after figures, with the only change being computer tuning and about 5 weeks:
SAE 481rwhp increased to SAE 495rwhp; and
SAE 508rwtrq increased to SAE 519rwtrq (!!!).
This is with the small "224/224-564-114" cam and a like-stock idle and excellent drivability.
Torque is about 430rwtrq at 2000rpms!
Good job MMS!
[Modified by Mako, 1:14 AM 7/30/2002]
Well, Mike Morgan did an excellent job! Before and after figures, with the only change being computer tuning and about 5 weeks:
SAE 481rwhp increased to SAE 495rwhp; and
SAE 508rwtrq increased to SAE 519rwtrq (!!!).
This is with the small "224/224-564-114" cam and a like-stock idle and excellent drivability.
Torque is about 430rwtrq at 2000rpms!
Good job MMS!
[Modified by Mako, 1:14 AM 7/30/2002]
Drifting
Joined: Feb 2002
Posts: 1,314
Likes: 2
From: san diego ca
Re: New Dyno Numbers for 427 (KDubb)
Congrats on the new #'s Mako ! If there are any hidden ponies..Mike will sure find them !
Post your Graph , i'd like to see how that big block pulls on the low end..Must be nice ;)
:cheers:
Jeff
Post your Graph , i'd like to see how that big block pulls on the low end..Must be nice ;)
:cheers:
Jeff
Drifting
Joined: Mar 2002
Posts: 1,613
Likes: 1
Re: New Dyno Numbers for 427 (KDubb)
224 cam in a 427 CI motor? wow thats what most stock CI motors use. I have a 230/227 cam in my a4 stock CI fbody and have no drivability issues; its all about the tuning! ;) , but anyway those are some nice numbers, but throw a slightly bigger cam in and you'll some nice 500+ figures!
Thread Starter
Drifting
Joined: Jul 2000
Posts: 1,289
Likes: 0
From: Newport Beach, CA, USA
Re: New Dyno Numbers for 427 (2k2silverZO6)
2K:
I went through 5 months of tuning with the 229/114 cam and HATED IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Too much mirror and cockpit shake and stalling. The dyno overlay curves also show that the 224 cam crushes the 229 cam until about 5500rpms when the 229 has a power peak of about 15hp more around 6200 or 6500--it never catches up in torque. I had BOTH cams in my car. However, each to his own; some like lots of rumble and shake and the 229 cam does have more peak power.
[Modified by Mako, 1:10 AM 7/30/2002]
I went through 5 months of tuning with the 229/114 cam and HATED IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Too much mirror and cockpit shake and stalling. The dyno overlay curves also show that the 224 cam crushes the 229 cam until about 5500rpms when the 229 has a power peak of about 15hp more around 6200 or 6500--it never catches up in torque. I had BOTH cams in my car. However, each to his own; some like lots of rumble and shake and the 229 cam does have more peak power.
[Modified by Mako, 1:10 AM 7/30/2002]
Supporting Vendor
Joined: Jan 2000
Posts: 5,683
Likes: 14
From: TX
Cruise-In I Veteran
St. Jude Contributor '04
Re: New Dyno Numbers for 427 (Mako)
Congrats Ted! Traction problems yet??? Sounds like you might need some wheels and sticky tires for that bad boy! :yesnod: ;)
Nate
Nate
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Team Owner
Joined: Jun 2001
Posts: 100,672
Likes: 2
From: Cleveland OH
Re: New Dyno Numbers for 427 (NoMercy)
Sweet! I will have to take mine in for an "adjustment" as well ... next time I'm in Houston!! :D :D :cheers:
Le Mans Master
Joined: Apr 1999
Posts: 6,129
Likes: 14
From: Vette
Re: New Dyno Numbers for 427 (Mako)
Mako ,
those are awesome numbers! :yesnod:
What’s the rest of your setup like?
<LI>LS1/LS6 heads?
<LI>What kind of headers?
<LI>Cats/Off road?
<LI>What kind of exhaust?
<LI>Pump gas I’m assuming….
Would be nice to see the graph :yesnod:
those are awesome numbers! :yesnod:
What’s the rest of your setup like?
<LI>LS1/LS6 heads?
<LI>What kind of headers?
<LI>Cats/Off road?
<LI>What kind of exhaust?
<LI>Pump gas I’m assuming….
Would be nice to see the graph :yesnod:
Thread Starter
Drifting
Joined: Jul 2000
Posts: 1,289
Likes: 0
From: Newport Beach, CA, USA
Re: New Dyno Numbers for 427 (EuG)
Thanks all!
EUG:
When I get an email of the dyno graph I will send it to you so you can post it as I do not know how.
Some more pieces of the puzzle: stock LS6 intake; ported and polished stock throttle body from Halltech; Blackwing; 160 degree TSTAT; DRM 1 3/4" headers; hollowed out, failed Viper cats; 3" custom exhaust through Corsa Touring mufflers (quiet on cruise with no resonance and NASCAR on WOT); terrible California 91 pump gas.
We know we are leaving a bit of power on the table with: (a) the headers have a 2 1/2" collector going into a 3" exhaust; (b) no use of "merge collectors"; and (c) Corsa Mufflers (DynoMax add about 5hp or more but have resonance).
[Modified by Mako, 8:58 PM 7/30/2002]
EUG:
When I get an email of the dyno graph I will send it to you so you can post it as I do not know how.
Some more pieces of the puzzle: stock LS6 intake; ported and polished stock throttle body from Halltech; Blackwing; 160 degree TSTAT; DRM 1 3/4" headers; hollowed out, failed Viper cats; 3" custom exhaust through Corsa Touring mufflers (quiet on cruise with no resonance and NASCAR on WOT); terrible California 91 pump gas.
We know we are leaving a bit of power on the table with: (a) the headers have a 2 1/2" collector going into a 3" exhaust; (b) no use of "merge collectors"; and (c) Corsa Mufflers (DynoMax add about 5hp or more but have resonance).
[Modified by Mako, 8:58 PM 7/30/2002]
Le Mans Master
Joined: Apr 1999
Posts: 6,129
Likes: 14
From: Vette
Racer
Joined: Jun 2000
Posts: 391
Likes: 0
From: Formerly Stylephile Los Angeles CA
Re: New Dyno Numbers for 427 (Mako)
Ted,
Remember? I rode in your in beast when all you had was the measly LS6 ;) , and I thought it pulled like a freight train. All I can say is, with this 427, you must be having some serious traction problems, burned clutches and or shattered rearends. :smash:.
Congrats on a succesful build (unless my suspicions are correct!) ;)
Remember? I rode in your in beast when all you had was the measly LS6 ;) , and I thought it pulled like a freight train. All I can say is, with this 427, you must be having some serious traction problems, burned clutches and or shattered rearends. :smash:.
Congrats on a succesful build (unless my suspicions are correct!) ;)
Racer
Joined: Aug 2001
Posts: 361
Likes: 2
From: Maple Grove MN
Re: New Dyno Numbers for 427 (Mako)
Mako, that's cam sounds very much the same as my first cam in my 427. I ran it with 1.8 rockers though.. IMHO its better than the larger cams I've tried 4 so far.. Idles like a stock car and runs 10's all day long.. I dislike the race car lope ect.. Who cares if you can get it to idle!
Nice #'s
Dennis
