valve springs
#467720
09/14/09 06:52 AM
09/14/09 06:52 AM
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Joined: Mar 2005
Posts: 525
Can , Nova Scotia , Cape Breto...
caper
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 525
Can , Nova Scotia , Cape Breto...
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My valve springs only have seat pressure of 111 lbs. Cam card says I should have 145 lbs.Eledbrock RPM heads with a 643 lift cam. What valve springs should I go with ? What is the part #? Big block 440 ( 496)
New best 10.18 , 1.40 60 ft 496 Scott Brown built, street driven 3600 lbs,654 hp , 653 ft tq
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Re: valve springs
[Re: caper]
#467723
09/14/09 10:31 AM
09/14/09 10:31 AM
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Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
S/ST 3040
master
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master
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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Quote:
Stock heads are 1.880 installed height.
Since Edelbrock heads have NO top cut on the valve job........the last
set I did, ended up with .060" shims under the 'stamped cup".
A little juggling shims and keepers should get 1.950" pretty easy.
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Re: valve springs
[Re: caper]
#467724
09/14/09 12:30 PM
09/14/09 12:30 PM
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Joined: Aug 2003
Posts: 43,214
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,214
Bend,OR USA
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I think Edelbrock says there springs on the RPM heads are only good to .600 lift  I like to see 150+ and 325 to 375 lbs. open on both flat tappet cams, hydraulic and solids  Try shimming them first, make sure you have at least .060 to coil binnd, check every one of them individually Replace them if needed with a better spring from Comp, Lunati, Isky 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: valve springs
[Re: marvo451]
#467726
09/14/09 03:55 PM
09/14/09 03:55 PM
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Joined: Mar 2005
Posts: 525
Can , Nova Scotia , Cape Breto...
caper
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 525
Can , Nova Scotia , Cape Breto...
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I got a hold of Scott Brown , a new set on the way. Thanks for the replys,
Sheldon
New best 10.18 , 1.40 60 ft 496 Scott Brown built, street driven 3600 lbs,654 hp , 653 ft tq
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