LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

roller rockers

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Old 10-25-2006, 07:39 AM
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roller rockers

Can I install 1.6 rockers on a stock set of heads?(CC non self alining)I know I need guide plates.

Thanks
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Old 10-25-2006, 08:17 AM
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Yes. Springs need to be upgraded.
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Old 10-25-2006, 08:18 AM
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yep, get the 7/16 studs while your at it
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Old 10-25-2006, 08:26 AM
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Thanks guys!!! I didn't think it was as easy as just puting them on and adj.them>
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Old 10-25-2006, 08:51 AM
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Yep, its a pretty easy and straightforward bolt-on.
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Old 10-25-2006, 05:09 PM
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So do you have to change the Springs? Or can I just bolt them on?
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Old 10-25-2006, 05:54 PM
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Yes, do a search. You at least need LT4 springs.
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Old 10-25-2006, 06:08 PM
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I Searched and came up with very little except that some people say just bolt them on and others say you have to replace the valve springs and push rods.I'd like to here from people that did both!!
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Old 10-25-2006, 06:12 PM
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you need LT4 springs if you using the stock cam. and I would get hardend pushrods & guideplates if you get NSA roller rockers. If you get SA roller rockers stock pushrods and no guide plates.
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Old 10-27-2006, 08:44 PM
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this may answer most of your questions:http://web.camaross.com/forums/showt...&highlight=1.6
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Old 10-27-2006, 09:48 PM
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For 1.6 NSA rockers, you will need guideplates (GMPP or ISKY adjustable sre good choices), replacement springs (LT4 work, and so do many others) and I would recommend replacing your pushrods with stock length (7.20") hardened ones. Some will say the '95s came with hardened pushrods from the factory, but I would replace them anyway.

The 7/16" studs are also a cheap upgrade, especially since the hole in the head is already 7/16", and the stock studs step it down to 3/8"; so the 7/16" ones just screw right in. You have to take them out to install the guideplates anyway, so might as well replace them with something better ..... just make sure the RR you plan to get are for 7/16" studs.

Thomas.
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Old 10-28-2006, 12:08 AM
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I have a dumb question but what advantage is there to a 7/16th stud over the 3/8ths?
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Old 10-28-2006, 01:51 AM
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I have a dumb question but what advantage is there to a 7/16th stud over the 3/8ths?
They are a little over twice as thick on the part that the rocker arm is attatched to. Thus, in theory, being more apt to take a beating an withstand greater pressures created by high-revving and higher lifts.
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