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Re: Rocker arms and actual lift at valve
[Re: fast68plymouth]
#3196765
12/11/23 04:49 PM
12/11/23 04:49 PM
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Joined: Jul 2008
Posts: 180
Idaho
boomerodell
OP
member
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OP
member
Joined: Jul 2008
Posts: 180
Idaho
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I will agree. My concern isn't getting maximum lift out of the camshaft chosen just more of an accurate lift. That bugs me. Or closer than it is.... If that makes sense? The HS's in either ratio wont be available until mid Jan. Unless I find some on the shelf somewhere.
Last edited by boomerodell; 12/11/23 04:55 PM.
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Re: Rocker arms and actual lift at valve
[Re: fast68plymouth]
#3196892
12/12/23 08:18 AM
12/12/23 08:18 AM
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Joined: Dec 2021
Posts: 1,381
Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,381
Loudoun County, VA
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FWIW, my suggestion for swapping out the 1.38 net ratio rockers for something that’s in the 1.5-1.6 net ratio range ……in this application……..has almost nothing to do with my concern about the max lift change/increase. Excessive clearance between peak lift and spring coil bind comes to mind...
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Rocker arms and actual lift at valve
[Re: boomerodell]
#3196895
12/12/23 08:26 AM
12/12/23 08:26 AM
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Joined: Dec 2021
Posts: 1,381
Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,381
Loudoun County, VA
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I will agree. My concern isn't getting maximum lift out of the camshaft chosen just more of an accurate lift. That bugs me. Or closer than it is.... If that makes sense? The HS's in either ratio wont be available until mid Jan. Unless I find some on the shelf somewhere. I thought I saw some HS for Trick Flow heads available from Summit or eBarf recently Also, I have a spare pair of Hughes later design 1.6 rockers you can borrow if you want to check the lift with those
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Rocker arms and actual lift at valve
[Re: Brad_Haak]
#3196909
12/12/23 09:28 AM
12/12/23 09:28 AM
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Joined: Jul 2008
Posts: 180
Idaho
boomerodell
OP
member
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OP
member
Joined: Jul 2008
Posts: 180
Idaho
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Thanks Brad I really appreciate the offer but we'll either wait until some are available or go ahead and start it as is. The engine is ready to go with the 1.5s now only thing I should do after reading Andy's article is get some oil thru pushrods eventually. We have bam lifters with push rod oiling. It's on an engine run stand so parts aren't too difficult to swap out later. Finally getting close between waiting on machine shops and collecting parts this will be almost a 3 year project. lol.
The normal bb rockers are available, not the E series for Edelbrock and TF heads.
Just noticed you said for the TF heads. I'll check ebay. Thanks.
Last edited by boomerodell; 12/12/23 09:31 AM.
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