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 Or would the lt4 spring be considered a superseded part for the lt1?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

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

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.

Re: Pure Stock Valve Spring rule
 

maybe check with K-Motion to see if they have a spring in the required range

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.

Re: Pure Stock Valve Spring rule
 

Contact Mike Baker on what Springs are allowed.

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.

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