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Re: 420 going on the dyno next couple days [Re: biff426] #2791052
06/30/20 03:47 PM
06/30/20 03:47 PM
Joined: May 2004
Posts: 11,065
Taxes & Virus's R-US, NY
Dragula Offline
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Taxes & Virus's R-US, NY
Biff,

Who's rockers are those? And how many cubes?


'71 Duster 400/512
https://www.youtube.com/watch?v=Znuo3jMUXTk (6.00 at 114.05mph)
https://www.youtube.com/watch?v=Y9hxSMAWoII (9.66 at 139mph)

'70 Cuda, Plan C....605 Hemi
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph)(823hp and still tuning)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)
Re: 420 going on the dyno next couple days [Re: Dragula] #2791059
06/30/20 04:00 PM
06/30/20 04:00 PM
Joined: Apr 2005
Posts: 904
Delaware
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biff426 Offline OP
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Delaware
420 cubes and they are Harland Sharp rockers. The Harland Sharp rockers are fine you just have to shim the lifters solid. The way the Gen 3 Hemi oils the lifter these rockers will not work with a Hyd lifter.

Re: 420 going on the dyno next couple days [Re: biff426] #2791239
06/30/20 09:30 PM
06/30/20 09:30 PM
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biff426 Offline OP
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Re: 420 going on the dyno next couple days [Re: biff426] #2792539
07/04/20 08:01 AM
07/04/20 08:01 AM
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Australia
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Good to see you got it sorted. Were you still using the 1 3/4 dyno headers.


Stock 6.1 Hemi . 11.657 @ 113.54 , 3588 lbs.
Re: 420 going on the dyno next couple days [Re: aus370] #2792556
07/04/20 09:37 AM
07/04/20 09:37 AM
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biff426 Offline OP
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Yes the 751 was with the dyno headers. The 2 inch TTI headers were rubbing on the dyno and we just couldn't get them to fit without banging everything up. I am sure the headers are worth some power as well as if I could get a Dominator on it in the car. We were using a QS950 Quick Fuel carb on the dyno. The A/F was good but I bet a 1050-1100 Dominator would make more power. At some point I may get a Dominator flange Ritter intake and see what it does with a Dominator. I don't have room for an adapter and a Dominator.

Re: 420 going on the dyno next couple days [Re: biff426] #2801671
07/27/20 11:18 AM
07/27/20 11:18 AM
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biff426 Offline OP
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Took the car out for the maiden voyage Saturday. Air was terrible 90 degree heat high humidity and for some reason I never checked my throttle operation before going to the track and it was not opening all the way, I have to get that figured out I am losing about a 1/4 of travel. The car still went a best of 10.07 @ 134. Not bad for an all steel including the scoop 65 Coronet. I think the ET and MPH backup the horsepower numbers and it still has more in it. The scales were not open so I couldn't weigh it but I am saying it probably weighs 36-3650 with me in it.

Re: 420 going on the dyno next couple days [Re: biff426] #2801774
07/27/20 03:25 PM
07/27/20 03:25 PM
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IL
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Dart451 Offline
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Good first outing. Will be interesting to see how much it improves with good air and more track time.

Re: 420 going on the dyno next couple days [Re: biff426] #2802085
07/28/20 11:14 AM
07/28/20 11:14 AM
Joined: Jan 2012
Posts: 1,343
North America
Warhawk Offline
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Can we get a video of the engine running?

Re: 420 going on the dyno next couple days [Re: biff426] #2802166
07/28/20 03:07 PM
07/28/20 03:07 PM
Joined: May 2004
Posts: 11,065
Taxes & Virus's R-US, NY
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Taxes & Virus's R-US, NY
Originally Posted by biff426
OK shimmed the lifters solid, put the HS rockers on. Valve train issues are gone!!!!! Made 751HP at 6900 and 602LBFT at 5400. Everything is happy and this thing is going in the car. I was really hoping to make closer to 800HP but I think to get another 50HP is going to take getting a little crazy with things. I am not willing to spend anymore on this deal. Hopefully I can get the car together by the end of the season and make some hits to backup these numbers.


Well, I guessed 740hp....But I had seen a very similar build. Congrats...


'71 Duster 400/512
https://www.youtube.com/watch?v=Znuo3jMUXTk (6.00 at 114.05mph)
https://www.youtube.com/watch?v=Y9hxSMAWoII (9.66 at 139mph)

'70 Cuda, Plan C....605 Hemi
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph)(823hp and still tuning)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)
Re: 420 going on the dyno next couple days [Re: Warhawk] #2802200
07/28/20 04:22 PM
07/28/20 04:22 PM
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Delaware
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biff426 Offline OP
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Originally Posted by Warhawk
Can we get a video of the engine running?


https://youtu.be/Tw936RlgYHU

Re: 420 going on the dyno next couple days [Re: biff426] #2802237
07/28/20 06:12 PM
07/28/20 06:12 PM
Joined: Mar 2007
Posts: 69
Palm City, FL
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Dadodgekid Offline
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Whats the setup on your car? Trans, gear, converter, etc? If you dont mind sharing

Re: 420 going on the dyno next couple days [Re: Dadodgekid] #2802306
07/28/20 09:13 PM
07/28/20 09:13 PM
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biff426 Offline OP
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The trans is a 727 with light weight internals, A&A 2.74 first gear but steel drum. Converter is a 9 inch Lupo. Car has a Dana with 4.56 gears.

Re: 420 going on the dyno next couple days [Re: biff426] #2802308
07/28/20 09:15 PM
07/28/20 09:15 PM
Joined: Jan 2012
Posts: 1,343
North America
Warhawk Offline
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Originally Posted by biff426
Originally Posted by Warhawk
Can we get a video of the engine running?


https://youtu.be/Tw936RlgYHU


Really nice! Love the car and engine.

Re: 420 going on the dyno next couple days [Re: biff426] #2807827
08/11/20 07:36 PM
08/11/20 07:36 PM
Joined: Oct 2017
Posts: 72
Australia
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Originally Posted by biff426
Took the car out for the maiden voyage Saturday. Air was terrible 90 degree heat high humidity and for some reason I never checked my throttle operation before going to the track and it was not opening all the way, I have to get that figured out I am losing about a 1/4 of travel. The car still went a best of 10.07 @ 134. Not bad for an all steel including the scoop 65 Coronet. I think the ET and MPH backup the horsepower numbers and it still has more in it. The scales were not open so I couldn't weigh it but I am saying it probably weighs 36-3650 with me in it.


Congrats on the 10.0 , sounds like high 9's next outing.


Stock 6.1 Hemi . 11.657 @ 113.54 , 3588 lbs.
Re: 420 going on the dyno next couple days [Re: biff426] #2808137
08/12/20 03:37 PM
08/12/20 03:37 PM
Joined: Jan 2003
Posts: 8,044
New Mexico
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420? I'm going to guess it will be "HIGH" horsepower then LOL smoke apimp smoke apimp

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