Question: NSA RR's vs SA RR's
07-09-2009, 08:06 AM
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Question: NSA RR's vs SA RR's At what point should one go to NSA roller rockers and guideplates instead of the SA's? Do the NSAs require continuous adjustment like the old school roller rockers used to need? My background/future mods: Stock bottom end, LE2 heads cam and ported intake, full exhaust, 58MM TB, 36# injectors, and the rest of the usual bolt ons.
07-09-2009, 10:21 AM
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definatley go with NSA rockers, they are stronger and more stable over a SA rocker. There is no reason to even take a chance by running a SA rocker. NSA's do not require continuous adjustment, you might be confused with a solid roller setup
07-09-2009, 10:59 AM
#3
SA for anything a GM LT4 hotcam or less (i.e. stock, cc304)
NSA anything above the hotcam and definitly is recommended for the LE cam packages, I do not know if LE are still using Beehive springs but that became the requirement since the valve stem didnt come up as much and there was nothing to align to.
As for adjustment, there is still just as much adjustement for lash like anything else, the PITA part is if you get adj guideplate and they need to be tack welded once you get it aligned correctly.
If I were to do it again, since I have already done it once, is get GM non adj guide plates.
NSA anything above the hotcam and definitly is recommended for the LE cam packages, I do not know if LE are still using Beehive springs but that became the requirement since the valve stem didnt come up as much and there was nothing to align to.
As for adjustment, there is still just as much adjustement for lash like anything else, the PITA part is if you get adj guideplate and they need to be tack welded once you get it aligned correctly.
If I were to do it again, since I have already done it once, is get GM non adj guide plates.
07-09-2009, 12:38 PM
#4
SA for anything a GM LT4 hotcam or less (i.e. stock, cc304)
NSA anything above the hotcam and definitly is recommended for the LE cam packages, I do not know if LE are still using Beehive springs but that became the requirement since the valve stem didnt come up as much and there was nothing to align to.
As for adjustment, there is still just as much adjustement for lash like anything else, the PITA part is if you get adj guideplate and they need to be tack welded once you get it aligned correctly.
If I were to do it again, since I have already done it once, is get GM non adj guide plates.
NSA anything above the hotcam and definitly is recommended for the LE cam packages, I do not know if LE are still using Beehive springs but that became the requirement since the valve stem didnt come up as much and there was nothing to align to.
As for adjustment, there is still just as much adjustement for lash like anything else, the PITA part is if you get adj guideplate and they need to be tack welded once you get it aligned correctly.
If I were to do it again, since I have already done it once, is get GM non adj guide plates.
07-09-2009, 01:25 PM
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SA for anything a GM LT4 hotcam or less (i.e. stock, cc304)
NSA anything above the hotcam and definitly is recommended for the LE cam packages, I do not know if LE are still using Beehive springs but that became the requirement since the valve stem didnt come up as much and there was nothing to align to.
As for adjustment, there is still just as much adjustement for lash like anything else, the PITA part is if you get adj guideplate and they need to be tack welded once you get it aligned correctly.
If I were to do it again, since I have already done it once, is get GM non adj guide plates.
NSA anything above the hotcam and definitly is recommended for the LE cam packages, I do not know if LE are still using Beehive springs but that became the requirement since the valve stem didnt come up as much and there was nothing to align to.
As for adjustment, there is still just as much adjustement for lash like anything else, the PITA part is if you get adj guideplate and they need to be tack welded once you get it aligned correctly.
If I were to do it again, since I have already done it once, is get GM non adj guide plates.
As for 1.6 NSAs, what seems to be everyone's favorite?
07-09-2009, 01:34 PM
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I went ahead and ordered what Lloyd suggested and prefered. I went with the trickflow guideplates no problem and 1305-16 comp cam 1.6 rr's. You can order the parts your self for cheap.
Trending Topics
07-09-2009, 06:20 PM
#13
Comp Cams "CC503" Grind# 276HR-12 part# 07-503-8 $250
Comp Cams beehive springs part# 26918-16 $174
Comp Cams retainters part# 787-16 $50
Comp Cams valve locks part# 648-16 $23
Comp Cams Pro Mag 7/16" 1.6 rr's part# 1305-16 $290
ARP 7/16" rocker arm studs part# 134-7103 $38
TrickFlow guideplates part# 30400623-8 $16
TrickFlow 7.2" chromemoly pushrods part# 21407200 $87
Felpro replacement valve seals part# SS72861 $19
Felpro timing cover gasket kit part# TCS45956 $14
You can get all of the above from SummitRacing
07-10-2009, 05:52 PM
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Definitely go NSA. There have been a lot of SA failures reported recently on the six or so forums I visit, including photos of the damage.
Last week I just finished installing new heads and cam in my son's 96 Vette and I went with a NSA setup. CompCams, TrickFlow and Scorpions.
Jake
West Point ROCKS!
Last week I just finished installing new heads and cam in my son's 96 Vette and I went with a NSA setup. CompCams, TrickFlow and Scorpions.
Jake
West Point ROCKS!
