I got a set of LT4 Roller Rockers and I want to Put them on My LT1. I was wondering if any of you have done this and if so how did it work and what did you have to de spechial if anyhting? Sooo please let me know if you got any info? Thx, lata, Ark

 

GM sells the 1.6 LT4 rockers in a kit for LT1's. Yes, you can use them. If they're off a factory LT4, your adjustment nuts will be different. LT4's used metric nuts...LT1's used standard nuts. If you buy the kit from GM, they already have the standard nuts.
BTW, from what I've seen, they make a big difference in power.

Frank

 

I dropped .2 secs off of my first pass after adding 1.6 rr's

 

I kind of Knew most of that. I have a set of used RR from a LT4 Vett. I know that I need to get new Locking Nuts to use them on my LT1. I was Just wondering if anyone else did this and how it worked for theM? Just wondering if there would be any Unseen problems????? Thx, Lata, Ark

 

I have heard of some people having to modify their valve covers to get the rockers to fit but mine slide right in no probs.

 

NO they absolutly WONT fit. But so you dont lose the money you spent on them ill help you recover ill give ya 25 bucks for em

 

You Sooooo Funny! Make it $29.50 and we might have a deal??????????? Lata, Ark

 

Just make sure that they are the "aftermarket" GM ones with the 3/8" stud and not the acctual LT4 RR's with the 10mm stud.

If the car has over 50k miles it would be a good time to replace the valve springs and pushrods also.

 

These are the Original LT4 Rockers with the 10MM locking nuts. I am thinking that I will have to Buy some aftermarket Locking Nuts to use these on the car with these rockers! What do you think? Thx, Lata, Ark

 

offers still on the table, ok hows 30 sound?!?!

ttt

 

The 'original' LT4 rockers didn't use locknuts [they were tightened/torqued down..]
I'd say what you need are true LT4 10mm studs.. [Not LT1 studs..]

 

Yes, I have been thinking about that BUT that's somthing I am not looking forward to? Don't thoes studs Press in? Not looking forward to trying to do that while the heads are on the car? Ya Know? Lata, Ark

 

Not pressed in.. they are threaded, and are the same threads[in the HEAD end] as the ones you have now...not that hard to change in the car[easier than springs!]
You are removing rockers anyway to change them.. just unbolt the old studs, and bolt the new ones in..

 

just get the 3/8" locking stud set from crane cams (its the same part that GM gives you with the kit) and you should be fine.

Make sure you get some stronger valvesprings too, the 1.6s will increase your lift.

Also be sure to put an lt4 knock module in there - the lt1 knock module will pick up the extra valvetrain noise as knock, and retard your timing.

other than that, I can't really see what else you'd need. You might need tuning to get the full benefits, but even without it, you should see a good gain.

Enjoy the RRs.. I'm enjoying the hell out of mine.

 

I already have the LT4 Knock Module! Lata, Arkangel77