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05-13-2014, 04:13 PM
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#1 |
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Member
Join Date: Oct 2008
Posts: 149
Likes: 2
Liked 35 Times in 6 Posts
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Pure Stock Valve Spring rule
I am ready to replace the valve springs on My 16000 mile Pure stocker lt1 engine. I am having trouble finding Factory valve springs. Everyone wants to sell me LT4 spring which closed seat pressure is 105. The rules say I have to run 85#@1.78 height . Does any one know of a vendor that has stock lt1 spring? The oem number from GM has been discontinued. Or would the lt4 spring be considered a superseded part for the lt1?
Thanks Aaron VALVE SPRINGS: Stock replacement per OEM spec. and must check on factory spec. open and closed pressure Last edited by russellauto1; 05-13-2014 at 04:50 PM. |
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05-13-2014, 05:23 PM
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#2 |
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Senior Member
Join Date: Feb 2002
Location: Southeast Michigan
Posts: 908
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Re: Pure Stock Valve Spring rule
I have a set of stock springs I took off new LT1 heads, when I was racing my Firehawk. They check 85 lbs. @ 1.78" . What is the open spec ? I could bring them to Norwalk. $ 80 . Russ ss3011@aol.com
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05-13-2014, 09:24 PM
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#3 |
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Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
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Re: Pure Stock Valve Spring rule
You guys might check with TRW. I know it was a long time ago, but when I had my '56 Chevy Jr Stocker we had to have stock valve spring, that had to check correctly. TRW had stock app springs that looked & checked exactly like the GM springs, but lasted longer. My General Kinetics "cheater" cam lobes looked like a roller profile, and was very hard on springs. It was a solid lifter engine that killed GM springs in three races or so. TRW spring would go four to five races.
Might be a viable source.
__________________
Ed Wright 4156 SS/JA |
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05-14-2014, 11:09 AM
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#4 |
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Member
Join Date: May 2013
Location: Spotsylvania,Va
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Re: Pure Stock Valve Spring rule
maybe check with K-Motion to see if they have a spring in the required range
__________________
Gary Burr IHRA MEMBER # 1958 Stk 1949 |
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05-14-2014, 02:37 PM
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#5 |
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Member
Join Date: Oct 2008
Posts: 149
Likes: 2
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Re: Pure Stock Valve Spring rule
After hearing from Ed, I checked trws valve spring list and came up with the number for Stock replacment valve spring. I was able to crossover the number to MFGs.
OEM number: 10206040 TRW/Melling Number: VS-2228 Sealed Power: VS-677 Come to find Out the advanced auto parts has 26 of them for 2.95 each . Thanks Ed Wright For the lead. |
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05-14-2014, 05:09 PM
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#6 | |
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VIP Member
Join Date: Oct 2008
Posts: 2,127
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Re: Pure Stock Valve Spring rule
Quote:
Jeff Warren did my Engine and he called Ed to make sure he was installing the correct Spring. Have the Iron Head LT-1 and he confirmed using Melling VS2228 Springs. |
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05-14-2014, 08:21 PM
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#7 |
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VIP Member
Join Date: Oct 2008
Location: Somerset,Ky
Posts: 1,362
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Re: Pure Stock Valve Spring rule
if they have'nt changed the federal mogul ( sealed power)VS 677 is the closest to spec,I bought new set last year and they were right
Mike Taylor 3601 |
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