Need more install height
#1374923
01/24/13 08:29 AM
01/24/13 08:29 AM
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Joined: Jan 2003
Posts: 447 lake charles, la
sc4400
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 447
lake charles, la
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I'm needing some input from some head experts. I have a set of cnc345 440-1 that are going on a 605. With 1.6 rockers my lift will be .800. So I need to install 2.100 springs to have enough clearance. I've bought Manley +.100 retainers and +.050 keepers. With .062 spring cups my install is 1.980! So I'm looking at the spring seats, and there seems to be plenty of meat there. Indy sez cutting .050 is no problem. My question is...How much meat is really there? Has anyone cut them .100? I see no way to measure the thickness. All input is appreciated! Thanks...RIP
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Re: Need more install height
[Re: 440Jim]
#1374926
01/24/13 12:26 PM
01/24/13 12:26 PM
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Joined: Jan 2012
Posts: 2,678 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,678
Stuttgart, Arkansas
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Manley +.100 didn't give me near .100. Can't explain that. A block sonic tester will do heads.
2011 Drag Pak Challenger
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Re: Need more install height
[Re: sc4400]
#1374933
01/24/13 03:34 PM
01/24/13 03:34 PM
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Joined: Aug 2003
Posts: 43,307 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,307
Bend,OR USA
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I would call PAC valve spring CO. at 866-799-9417 and see if they have a set of valve springs, no matter which diameter, 1.625, 1.550, 1.525 or what ever will work for your heads at that installed hieght with the lift and pressures you need I would also look at buying thier matching tool steel 10 degree retainers and 10 degree keepers or the titianum retainers if the springs you select DON'T have inner dampeners
Last edited by Cab_Burge; 01/24/13 03:59 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Need more install height
[Re: Cab_Burge]
#1374934
01/24/13 03:50 PM
01/24/13 03:50 PM
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Joined: Dec 2005
Posts: 293 Kansas City Metro
mbogina
enthusiast
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enthusiast
Joined: Dec 2005
Posts: 293
Kansas City Metro
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We have also thinned the cups from .060 to .030 without any problems in the past.
Be a Rebel- Break the Laws of Physics!
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Re: Need more install height
[Re: quickd100]
#1374935
01/24/13 07:32 PM
01/24/13 07:32 PM
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Joined: Nov 2009
Posts: 3,410 Belpre,Ohio
CHAPPER
master
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master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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Quote:
I had the same type problem last year. I found out that there is no standard in the industry on retainer height. I ended up with a set of Howards +.100 retainers, and +.050 Manley locks, and lashcaps. I had 4 different sets of retainers and 3 sets of keepers in my hands by the time it was done. You can try and call several different outfits and tell them what's going on and ask for 1 retainer from each one to see which one will do the job. Dave
This is something I am interested in,,,,where/who did you find a +.050" lock that is machined for lash caps?? PM me if we don't want to 'hi-jack' this thread. I have never found anybody that sells them due to lack of material and failure possibilities.
If you like drag racing, support your local track.
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