Re: Going to dyno - 6 pack jetting starting point?
[Re: RROD]
#2828746
10/04/20 11:06 PM
10/04/20 11:06 PM
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Joined: Oct 2006
Posts: 1,264 New York, USA
Chargerfan68
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Nice numbers Chargerfan68. I have a few questions, what hyd roller lifters are you using, what spring retainer pkg on your trick flow heads and whose rocker arm assembly did you use? I’m planning on building a very similar engine build. Thanks. I used Howards Max Effort hyd roller lifters. Part no 91774. (Incidentally, i was concerned about the weight of oil i would use, since some hyd lifters are specific to weight. So i called Gaterman, who makes these, and the engineer said i would be fine using 10w40 or 15w-50 conv or synthetic....no problem at all). As far as the retainers, they are installed by Trickflow with the hyd roller spring option. So, I have no information on what retainer they are. The spring i believe is 1.545”. Maybe Dwayne P might chime in and give info on retainers. For the rockers, i used the Comp Cams Ultra pro magnum Rockers (steel) par no 1621-16. Very nice rockers. This is the second time i’ve used them. First on my own 505” in my ‘73 charger. Roller tip lands almost exactly in center of valve tip with both sets. These are bushed. Good luck on your build. And thx.
Last edited by Chargerfan68; 10/04/20 11:07 PM.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Going to dyno - 6 pack jetting starting point?
[Re: Chargerfan68]
#2828797
10/05/20 08:46 AM
10/05/20 08:46 AM
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Joined: Oct 2006
Posts: 1,264 New York, USA
Chargerfan68
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Looks like trickflow lists the retainers as: TFS-21400425 as far as i can tell.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Going to dyno - 6 pack jetting starting point?
[Re: J.Armistead]
#2833075
10/15/20 03:47 PM
10/15/20 03:47 PM
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Joined: Oct 2006
Posts: 1,264 New York, USA
Chargerfan68
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What about the setting on the outbiard idle mixture screws? Are the lead plugs removed so you can adjust and if so, what are they adj to? Also, are you sure the butterflies are all really closed? Have you looked down the carbs at idle and confirmed they are not being held slightly open by wrong gaskets, etc.. and the linkage for the outboards to the center carb...is it incorrectly adjusted, posdibly holding oitboards open? ( although now that i think about that, the slot in the center linkage arm might not allow it to do that. Let us know what you find.
I believe your jetting is in the ballpark. I tjink stock was 62 or 63 center. And outer metering plate orifices were around .083”-086” or so.
Last edited by Chargerfan68; 10/15/20 03:50 PM.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Going to dyno - 6 pack jetting starting point?
[Re: J.Armistead]
#2833227
10/16/20 12:39 AM
10/16/20 12:39 AM
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Joined: Oct 2006
Posts: 1,264 New York, USA
Chargerfan68
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Another thing to think about is: if the center carb idle speed screw is screwed too far in, it will expose the transfer slot and the idle mix screws will become ineffective. So right now, if you screw the center carb idle mix screws in all the way, does it cause the eng to stall?
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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