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Re: Has anyone installed 78070 Hedmans on Performer RPM heads?
[Re: metallicareload]
#3146243
05/22/23 07:15 PM
05/22/23 07:15 PM
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Joined: Jan 2003
Posts: 5,906 Athens, Greece
Pyper70
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,906
Athens, Greece
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6002 yeah.. That's the same gasket i have
I'm weary about cutting the head studs. 😱
Isn't it better to cut the flange a little?
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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Re: Has anyone installed 78070 Hedmans on Performer RPM heads?
[Re: Pyper70]
#3146250
05/22/23 07:35 PM
05/22/23 07:35 PM
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Joined: Oct 2005
Posts: 271 Anchorage, Alaska
metallicareload
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 271
Anchorage, Alaska
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Yeah, I was like I’m not grinding on my brand new $1000 headers, I would have done it if grinding the studs wasn’t enough. I definitely measured twice and cut once and made sure threads were showing above the nut afterwards. I “set” the depth of the cut using two nuts jammed at the right height on the studs. The nuts acted as a guide and protected the threads
440, 4-Speed, 3.54 1968, when Dinosaurs ruled the Earth
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Re: Has anyone installed 78070 Hedmans on Performer RPM heads?
[Re: moparx]
#3146729
05/25/23 04:07 AM
05/25/23 04:07 AM
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Joined: Jan 2003
Posts: 5,906 Athens, Greece
Pyper70
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,906
Athens, Greece
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I unfortunately buttoned her back up with the HP Manifolds again. All that work to discover that. I didn't want to cut the studs. I chamfered the flange at #1 & #7 but then soon discovered that the studs began hitting #3 & #5 and just surrendered. I have to order a set of ARP bolts but since I live in Europe, the shipping time enters the "weeks" not "next day delivery".
Oh well...A winter project ahead
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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