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Topic: stealth valve springs (Read 233 times)
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mick1967
Jr. Member
 Offline
Posts: 31
BigBlockDart.Com
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![\/][](http://www.bigblockdart.com/Smileys/classic/finger020.gif) looking for some info ,i have a set of new stealth heads i am using with a mopar performance cam kit it comes with new double valve springs can i just switch them over with out sending to a machine shop,second question would it hurt to clean up the the intake and exhuast ports because they seem to be very porous rough
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therocks
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Depemds what cam amd springs you have.The new springs have to be checked for installed height and coil bind amd you have to check the retainers also.I only changed mine because my car is 4 speed and a soled cam that sees 6500 or more all the time.My machinist checked the Source springs and said the would be ok for a htd cam and auto.I installed Comp duals ans retainers and keepers.My total was 200 bucks for him to swap it all 2 head gaskets and he unshrouded the valves amd back cut my valves and cleaned the seatd a tad.Rocky
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Harleys and Mopars.If god made better he kept it.
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ksdartguy
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looking for some info ,i have a set of new stealth heads i am using with a mopar performance cam kit it comes with new double valve springs can i just switch them over with out sending to a machine shop,second question would it hurt to clean up the the intake and exhuast ports because they seem to be very porous rough What MP cam are you running? Like stated, you need to check the installed height and the springs should go with the cam. As far as clean up, I spent a couple hours working on my stealth heads and had my machinest backcut the valves and re touch the valve job. They are working well as my 500 is pushing the Dart to 10s with 3.54 gear and all steel bodied street car.   Rick |
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Logged
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69 Swinger,3.54 Dana, 400/499, Stealth heads, Crower 262/266d, .686/.696L roller,11 to 1, 950 Bigs, E85 carb.
Best so far, 10.82 @ 124mph through the mufflers.
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mick1967
Jr. Member
Offline
Posts: 31
BigBlockDart.Com
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the cam i am using is a mopar 509 lift 292 on the intake and exhaust hyd with 440 source roller rockers
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jyrki
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The stock Stealth springs should be all you need, the ones I've measured have had about 110-120 lbs seat pressure. I would change the locks to machined ones though.
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ksdartguy
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The stock Stealth springs should be all you need, the ones I've measured have had about 110-120 lbs seat pressure. I would change the locks to machined ones though.
 Rick |
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Logged
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69 Swinger,3.54 Dana, 400/499, Stealth heads, Crower 262/266d, .686/.696L roller,11 to 1, 950 Bigs, E85 carb.
Best so far, 10.82 @ 124mph through the mufflers.
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