420 going on the dyno updated 6-30-20
#2665619
06/13/19 08:12 PM
06/13/19 08:12 PM
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Joined: Apr 2005
Posts: 936 Deland, Florida
biff426
OP
super stock
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OP
super stock
Joined: Apr 2005
Posts: 936
Deland, Florida
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OK who wants to take a guess at what this thing will make.
420 CI 4.065 bore 4.050 stroke 13.5:1 comp Thitek heads 2.18 intake valve flow 390 at 650 Bullet cam 645 640 260 266 on a 110 Ritter low rise intake 1000 HP holley Milodon oil system on C12 fuel
Last edited by biff426; 06/30/20 03:05 PM.
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Re: 420 going on the dyno next couple days
[Re: fbs63]
#2666633
06/16/19 07:41 PM
06/16/19 07:41 PM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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My guess is "more with 3" plenum spacer"
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: 420 going on the dyno next couple days
[Re: biff426]
#2666740
06/17/19 07:43 AM
06/17/19 07:43 AM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Where do you have timing and do you plan on moving your timing around?
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: 420 going on the dyno next couple days
[Re: BradH]
#2667330
06/18/19 07:08 PM
06/18/19 07:08 PM
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Joined: Apr 2005
Posts: 936 Deland, Florida
biff426
OP
super stock
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OP
super stock
Joined: Apr 2005
Posts: 936
Deland, Florida
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I'm a Gen III Dummy, but am looking forward to your results.
Also, where is the engine being tested, and on what type of engine dyno? It is a Stuska dyno
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Re: 420 going on the dyno next couple days
[Re: biff426]
#2667647
06/19/19 04:48 PM
06/19/19 04:48 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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I'm a Gen III Dummy, but am looking forward to your results.
Also, where is the engine being tested, and on what type of engine dyno? It is a Stuska dyno At what shop? PA, MD, DE, NJ?
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Re: 420 going on the dyno next couple days
[Re: BradH]
#2667917
06/20/19 11:31 AM
06/20/19 11:31 AM
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Joined: Apr 2005
Posts: 936 Deland, Florida
biff426
OP
super stock
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OP
super stock
Joined: Apr 2005
Posts: 936
Deland, Florida
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I'm a Gen III Dummy, but am looking forward to your results.
Also, where is the engine being tested, and on what type of engine dyno? It is a Stuska dyno At what shop? PA, MD, DE, NJ? Georgetown, DE Performance injection equipment
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Re: 420 going on the dyno next couple days
[Re: biff426]
#2667933
06/20/19 11:43 AM
06/20/19 11:43 AM
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Joined: Feb 2005
Posts: 20,190 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,190
PA.
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What kind of car is this going in? I can't wait to see track times especially from an East coast track.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 420 going on the dyno next couple days
[Re: biff426]
#2667945
06/20/19 11:55 AM
06/20/19 11:55 AM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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SO made a couple hits with the 850 dyno carb and timing from 20-26 degrees it liked 22 made 748HP.@7300. Putting the bigger carb and spacers on it and going to play with jetting should be worth some HP. ALso the headers we had to use are 13/4 and the ones going in the car are 2" not sure what if anything that will do. Can't get the 2" to fit on the dyno without reinventing the wheel. Nice, but I think there's more in it. I'll take a s.w.a.g. that the 1.75" headers are costing you about 20 HP over a good set of 2" tubes. Yep, I know where G-town DE is, but haven't been through it in years. My trips from NoVA in that direction tend to go south (OC) or north (NJ) of there.
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