So I did the high performance sewing machine mod...
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Teching In
Joined: Dec 2001
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From: Rochester, New York
So I did the high performance sewing machine mod... this weekend, better known as the cam install. It wasn't as bad as I thought it would be. All I have to say is WHAAAAAWHOOOOOOO!!!. What a difference! I have a couple of post install questions though, and hopfully the board has some answers.
1. I put in a TR 224, with new springs and pushrods. Where is a good spot to set the rev limiter at?
2. Does anyone know of a good place not too far from upstate NY (within 5 hours) that can do a tune on it? It isn't bad now, just looking to get the most out of it.
3. Do the roller rockers, such as Harland Sharp's, quiet the valvetrain down a lot, a little, or not at all. I wasn't expecting it to be quite that loud up front, but hey, it is well worth the ride.
Thanks in advance and as soon as I can get to the track I'll post some times.
1. I put in a TR 224, with new springs and pushrods. Where is a good spot to set the rev limiter at?
2. Does anyone know of a good place not too far from upstate NY (within 5 hours) that can do a tune on it? It isn't bad now, just looking to get the most out of it.
3. Do the roller rockers, such as Harland Sharp's, quiet the valvetrain down a lot, a little, or not at all. I wasn't expecting it to be quite that loud up front, but hey, it is well worth the ride.
Thanks in advance and as soon as I can get to the track I'll post some times.
Rev to 6800 rpm, won't make anything after that anways. Not sure about tuning, sorry. Do not buy roller rockers, not worth what they are charging for them and they aren't recommended if you are looking at 1.8's, the 1.7 Yella Terras are actually hurting people's numbers, they are real heavy, etc, so don't bother. You're going to have to live with the valve train noise, it's gonna be there for ever 
Congrats on the cam, these cars really wake up with them!
Congrats on the cam, these cars really wake up with them!
Thread Starter
Teching In
Joined: Dec 2001
Posts: 19
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From: Rochester, New York
Originally Posted by Orange Peel
Rev to 6800 rpm, won't make anything after that anways. Not sure about tuning, sorry. Do not buy roller rockers, not worth what they are charging for them and they aren't recommended if you are looking at 1.8's, the 1.7 Yella Terras are actually hurting people's numbers, they are real heavy, etc, so don't bother. You're going to have to live with the valve train noise, it's gonna be there for ever
I wasn't thinking of going with 1.8's but I was seriously considering some HS 1.7's. I haven't seen anything bad said about them yet or has my head been in a hole for too long?
Congrats on the cam, these cars really wake up with them!
I wasn't thinking of going with 1.8's but I was seriously considering some HS 1.7's. I haven't seen anything bad said about them yet or has my head been in a hole for too long?
Congrats on the cam, these cars really wake up with them!
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
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From: BFE
Originally Posted by Orange Peel
Rev to 6800 rpm, won't make anything after that anways. Not sure about tuning, sorry. Do not buy roller rockers, not worth what they are charging for them and they aren't recommended if you are looking at 1.8's, the 1.7 Yella Terras are actually hurting people's numbers, they are real heavy, etc, so don't bother. You're going to have to live with the valve train noise, it's gonna be there for ever
Congrats on the cam, these cars really wake up with them!
Congrats on the cam, these cars really wake up with them!
I don't quite agree with you on that. Harland Sharp rockers are pimp. They do quiet the valvetrain some and best of all they prevent side twisting of the rockers which give you a more stable geometry (Good to have when you rev till 6800)
They are so "beautiful" most poeple would like to have clear VCs to add to the show.
So far the only "problem" encountered with them is that they do slightly hit the corners of some 5.3 castings, but no major issue, nothing a little corner grinding won't fix.
TECH Resident
Joined: Jan 2003
Posts: 855
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From: AUSTIN TX
I do not see how a premium roller rocker would cost you power, in addition they are more durable than the stock ones. Also, A hydraulic roller should not get noisy just because it is bigger (unless you are using the Comp R type lifter). The problem lies in the non-adjustable valve train and the fact that you can not get the lifter preload perfect with out that adjustability. A good set of aftermarket rollers should give you that, which, if adjusted correctly, would quiet down some of that valve train noise.
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Verdad Gallardo All I know is that the Yella Terras are causing trouble for locals here. They are heavier than stock rockers and seem to be messing things up. I just don't think they are work the $600 or whatever they sell new for. The stock rockers have been running in the big ci motors for what, 5 years now before all these new rockers came out, and the stockers are doing fine. I personally believe that money can be best spent somewhere else.
If the rocker is too heavy, wouldn't that put more strain on the valve train, in return rob you of some HP?
If the rocker is too heavy, wouldn't that put more strain on the valve train, in return rob you of some HP?
I'm running the YT 1.7 rockers and have been well pleased with them so far. I made 399rwhp with them installed on my stock heads so I don't really see how they can make you lose power. I've seen on here a few incidents where valve float was reported but the cause was using a spring that was not capable of the cam's lift. I do however suspect that the YT's are heavier at the valve tip and can cause added pressure on the valvesprings. My set of 918s on my stock heads only had 4800 miles on them and had allready went down to 115-118lbs seat pressure when new they held 130lbs at 1.8" installed height.
I'll add another vote for Mikey at Rapid Motorsports for the tuning if your willing to drive to around the Reading, Philadelphia area. He really knows how to tune these LS1 cars. My tune that I made 399rwhp on was simply awesome!
Thread Starter
Teching In
Joined: Dec 2001
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From: Rochester, New York
Originally Posted by Chris ARE 360
Check out Rapid for the tuning. Mikey is great
As for the rockers, I was under the impression that a switch to 1.7 rollers would help with the noise also. I am not expecting gains, just a little less noise. Does anyone else have their .02 they want to throw in? I agree there are better places to throw money into (heads, rearend, clutch) but I would like to maximize what I have first before I go to the next level. By the way, in addition to the mods in my sig, I also have a ported throttle and gears, so realistically my next step is a set of Nittos and a clutch.
Originally Posted by Orange Peel
All I know is that the Yella Terras are causing trouble for locals here. They are heavier than stock rockers and seem to be messing things up. I just don't think they are work the $600 or whatever they sell new for. The stock rockers have been running in the big ci motors for what, 5 years now before all these new rockers came out, and the stockers are doing fine. I personally believe that money can be best spent somewhere else.
If the rocker is too heavy, wouldn't that put more strain on the valve train, in return rob you of some HP?
If the rocker is too heavy, wouldn't that put more strain on the valve train, in return rob you of some HP?
thats just Verbs.....he can't get anything right
as Orange Peel said, the Yella Terras a heavier rocker and as such if your valve springs are not strong enough, they will cause valve float (that and the fact that Verb's engine was about to come apart where the reasons he lost the HP
).I personally never liked them. They cost $500 and are still not adjustable. If your going to spend that much just go for something like the Comp Pro Mags or something.
Yeah I don't like them for the fact they are soooooo expensive, money best spent elsewhere 
I'm no expert, but everything that our local shop has told me (J&M Motorsports, Manchester, CT ) the stock rocker's are fine, and if you are gonna spend the money to upgrade, you mine as well go all the way and go Jesel. Alot of loot, but hands down the best.
TECH Senior Member
Joined: Mar 2004
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From: BFE
Guy like I said the Harlands are out. Shaft rockers, very light, fit under valve covers (Except 98 which need grinding).
Far superior to stock.(this week here was another post on a needle bearing in the oil pan)
Far superior to stock.(this week here was another post on a needle bearing in the oil pan)
after 50K miles on my TR224/224 and Comp 987s, my stock rockers are still in perfect shape. Rockers comming apart seems to be more of a hit or miss thing and if you check yours every few months, you would catch the problem before bearings come out (the bearing retainers will start to walk out of the rocker and eventually fall out).