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420 going on the dyno next couple days #2665619
06/13/19 08:12 PM
06/13/19 08:12 PM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
super stock
biff426  Offline OP
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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; 06/13/19 08:13 PM.
Re: 420 going on the dyno next couple days [Re: biff426] #2665665
06/13/19 10:03 PM
06/13/19 10:03 PM
Joined: May 2004
Posts: 10,802
Taxes R-US, NY
Dragula Offline
I Live Here
Dragula  Offline
I Live Here

Joined: May 2004
Posts: 10,802
Taxes R-US, NY
That should be on the +700hp for sure.....I wil go out on a limb and say 740hp...


'71 Duster Pump Gas 512LD 2013 Mod Gas Winner GRS
https://www.youtube.com/watch?v=DNMPXgRryws (6.08 at 112mph) (9.60 at +137mph)

'70 Cuda, Plan C....605 Hemi
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)
Re: 420 going on the dyno next couple days [Re: Dragula] #2665746
06/14/19 09:16 AM
06/14/19 09:16 AM
Joined: Jan 2004
Posts: 584
IL
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Dart451 Offline
mopar
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Posts: 584
IL
i will see your 740hp and raise to 777hp beer

Who doesn't want a triple seven.

Re: 420 going on the dyno next couple days [Re: Dart451] #2665772
06/14/19 10:21 AM
06/14/19 10:21 AM
Joined: Nov 2003
Posts: 1,402
NW Indiana
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fbs63 Offline
pro stock
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pro stock
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Joined: Nov 2003
Posts: 1,402
NW Indiana
I say 755 hp. Please let us know and get video!

Re: 420 going on the dyno next couple days [Re: fbs63] #2666633
06/16/19 07:41 PM
06/16/19 07:41 PM
Joined: Jun 2003
Posts: 9,192
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
sixpackgut  Offline
Drag Week Mod Champion
S

Joined: Jun 2003
Posts: 9,192
Charleston
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
Re: 420 going on the dyno next couple days [Re: sixpackgut] #2666714
06/17/19 12:10 AM
06/17/19 12:10 AM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
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Delaware
Should be making pulls tomorrow or Tuesday Fired it Friday and ran out of time. Guy that owns the dyno was busy this weekend. Thing sounds wicked!!! Making some base pulls then first thing to do is add a 2 inch spacer......although I don't have the hood clearance for it I want to see what it does.

Re: 420 going on the dyno next couple days [Re: biff426] #2666740
06/17/19 07:43 AM
06/17/19 07:43 AM
Joined: Jun 2003
Posts: 9,192
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
sixpackgut  Offline
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Joined: Jun 2003
Posts: 9,192
Charleston
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
Re: 420 going on the dyno next couple days [Re: sixpackgut] #2666741
06/17/19 07:57 AM
06/17/19 07:57 AM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
super stock
biff426  Offline OP
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Joined: Apr 2005
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Delaware
My 426 makes best power at 22 have it at 20 now to start will fool around from there,

Re: 420 going on the dyno next couple days [Re: biff426] #2667066
06/18/19 01:10 AM
06/18/19 01:10 AM
Joined: Jan 2003
Posts: 5,408
SoCal
ou812 Offline
master
ou812  Offline
master

Joined: Jan 2003
Posts: 5,408
SoCal
735HP and 575TQ....


Brian Hafliger
Re: 420 going on the dyno next couple days [Re: biff426] #2667187
06/18/19 01:10 PM
06/18/19 01:10 PM
Joined: Jan 2003
Posts: 14,962
Val-haul-ass... eventually
B
BradH Offline
I almost got away with it!
BradH  Offline
I almost got away with it!
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Joined: Jan 2003
Posts: 14,962
Val-haul-ass... eventually
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?

Re: 420 going on the dyno next couple days [Re: BradH] #2667298
06/18/19 05:29 PM
06/18/19 05:29 PM
Joined: Aug 2003
Posts: 3,160
Between a rock & a hard place
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cudadoug Offline
master
cudadoug  Offline
master
C

Joined: Aug 2003
Posts: 3,160
Between a rock & a hard place
popcorn

Re: 420 going on the dyno next couple days [Re: cudadoug] #2667310
06/18/19 06:12 PM
06/18/19 06:12 PM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
super stock
biff426  Offline OP
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Posts: 808
Delaware
Fighting a water leak in the front cover motor plate deal. Got it fixed now, pulls in the morning.

Re: 420 going on the dyno next couple days [Re: BradH] #2667330
06/18/19 07:08 PM
06/18/19 07:08 PM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
super stock
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Joined: Apr 2005
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Delaware
Originally Posted by BradH
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

Re: 420 going on the dyno next couple days [Re: biff426] #2667441
06/19/19 06:20 AM
06/19/19 06:20 AM
Joined: Oct 2017
Posts: 62
Australia
aus370 Offline
member
aus370  Offline
member

Joined: Oct 2017
Posts: 62
Australia
765 hp


Stock 6.1 Hemi . 11.657 @ 113.54 , 3588 lbs.
Re: 420 going on the dyno next couple days [Re: biff426] #2667647
06/19/19 04:48 PM
06/19/19 04:48 PM
Joined: Jan 2003
Posts: 14,962
Val-haul-ass... eventually
B
BradH Offline
I almost got away with it!
BradH  Offline
I almost got away with it!
B

Joined: Jan 2003
Posts: 14,962
Val-haul-ass... eventually
Originally Posted by biff426
Originally Posted by BradH
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?

Re: 420 going on the dyno next couple days [Re: BradH] #2667917
06/20/19 11:31 AM
06/20/19 11:31 AM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
super stock
biff426  Offline OP
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Joined: Apr 2005
Posts: 808
Delaware
Originally Posted by BradH
Originally Posted by biff426
Originally Posted by BradH
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

Re: 420 going on the dyno next couple days [Re: biff426] #2667926
06/20/19 11:39 AM
06/20/19 11:39 AM
Joined: Apr 2005
Posts: 808
Delaware
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biff426 Offline OP
super stock
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Joined: Apr 2005
Posts: 808
Delaware
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.

Re: 420 going on the dyno next couple days [Re: biff426] #2667933
06/20/19 11:43 AM
06/20/19 11:43 AM
Joined: Feb 2005
Posts: 14,777
PA.
pittsburghracer Offline
"Little"John
pittsburghracer  Offline
"Little"John

Joined: Feb 2005
Posts: 14,777
PA.
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
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: 420 going on the dyno next couple days [Re: biff426] #2667945
06/20/19 11:55 AM
06/20/19 11:55 AM
Joined: Jan 2003
Posts: 14,962
Val-haul-ass... eventually
B
BradH Offline
I almost got away with it!
BradH  Offline
I almost got away with it!
B

Joined: Jan 2003
Posts: 14,962
Val-haul-ass... eventually
Originally Posted by biff426
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.

Re: 420 going on the dyno next couple days [Re: biff426] #2667976
06/20/19 01:07 PM
06/20/19 01:07 PM
Joined: Jan 2004
Posts: 584
IL
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Dart451 Offline
mopar
Dart451  Offline
mopar
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Joined: Jan 2004
Posts: 584
IL
Making some steam!! keep updates coming

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