Can I remove 426 Hemi heads in car (70 Challenger)?
#1247413
06/08/12 04:32 PM
06/08/12 04:32 PM
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Joined: Jan 2003
Posts: 4,114
Horsham, Pa.
Finoke
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Horsham, Pa.
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I developed a miss in #7 cylinder in my 426 hemi. I did a leak down and I'm leaking pretty badly from #7 intake valve. I would like to pull both heads for further examination because I also found a slight bend in #6 intake pushrod. Can I remove the heads from the engine while its in the car. I'm mulling over how to handle the head studs that are fastened with nuts inside the valley area. I don't think I have clearance to remove the head with the stud in it. Can the stud easily be backed out from the valley area? Is there enough room to disengage it from the head that way? Thanks in advance  Tom
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Re: Can I remove 426 Hemi heads in car (70 Challenger)?
[Re: Finoke]
#1247416
06/08/12 04:48 PM
06/08/12 04:48 PM
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Joined: Feb 2007
Posts: 970
Backwater, PA
bwdst6
Bob George Racing #1 Fan
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Bob George Racing #1 Fan
Joined: Feb 2007
Posts: 970
Backwater, PA
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Long answer: Yes! Assuming everything is in the stock location. You don’t need to worry about taking the valley studs off either. Passenger side is close though.
Good luck with finding your issue!
Last edited by bwdst6; 06/08/12 04:52 PM.
This post is available in double vision where drunk.
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Re: Can I remove 426 Hemi heads in car (70 Challenger)?
[Re: VanishPt]
#1247419
06/08/12 08:27 PM
06/08/12 08:27 PM
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Joined: Jan 2003
Posts: 4,114
Horsham, Pa.
Finoke
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Quote:
should come right out. If it gets close, try putting a wooden block under the oil pan and then lift the passenger side up a bit.
Good idea, will do if needed
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Re: Can I remove 426 Hemi heads in car (70 Challenger)?
[Re: Finoke]
#1247421
06/09/12 11:21 PM
06/09/12 11:21 PM
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Joined: Jun 2004
Posts: 3,319
Chicago Burbs
sthemi
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Chicago Burbs
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Yes, it will come out.. plan on raising the engine on at least the passenger side, I would pull both side engine mount bolts.. Be prepared, wear a cup or your jewels may need to be repaired as well..  those Iron Hemi heads are heavy..I just got mine back from the machine shop... Two people lift would be a good idea.. 
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Re: Can I remove 426 Hemi heads in car (70 Challenger)?
[Re: Lou_Steger]
#1247426
06/13/12 02:57 PM
06/13/12 02:57 PM
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Joined: Jan 2003
Posts: 75,404
A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,404
A gulag near you.
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Quote:
Are those studs threaded into the bottom of the head??
Yes they would be .
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Re: Can I remove 426 Hemi heads in car (70 Challenger)?
[Re: ScottSmith_Harms]
#1247427
06/13/12 03:55 PM
06/13/12 03:55 PM
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Joined: Dec 2007
Posts: 18,172
Mass
DAYCLONA
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I Live Here
Joined: Dec 2007
Posts: 18,172
Mass
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Quote:
Also, not really common with a street hemi build but if the block/heads have been studded (as opposed to stock head bolts)you cant pull the heads in the car.
Can be done, been there done that with a 472 HEMI with full head/rocker studs, passenger side does require undoing the mount and angling the engine over a bit to clear the shock tower,...done the same thing with a fully studded 472 HEMI in the 71-2 B body platform also,...PITA, but doable
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