Bolt-on Full Roller Rocker for Gen III

[Guest]

I stand corrected. Thanks

I guess I won't attempt this then with the regular Cranes. Guess I will just go with roller tip.

[geoffinbc]

Raven 2 studs in a pack. The Adjusting nuts come with the Crane rockers.

Shaun what are you installing them on? Your Fiero in the sig? If so then the Cranes for the 660 will work fine but you have to blunt the corners on the rockers or they will touch the inside of the valve cover ever so slightly. I had to do it on my S-10 when I put Fiero Covers on it. If you are going it on a Gen III then just wait because I bet I know a guy who will be willing to upgrade to the new LS style rockers because they offer a higher ratio. If they clear we will let everyone know.

[Cliff8928]

With the new rockers you need the guide plates he mention though, and those still require custom pushrods. The stock GEN3's aren't heat treated and may fail if used with guide plates. The older pushrods are heat treated, but are a different length so they won't work. You may have to get a custom length too depending on what else you change. You just have to install the old length ones first and check the geometry to make sure the roller tip on the rocker stay in the middle 1/3 section of the vavle stem.

So you mean that even the '94-95 Gen 3 pushrods wouldn't work (they have guideplates)


Cliff Scott
89 BerettaGT
04 AleroGX

[geoffinbc]

Yea they would. Even the self aligning rockers may still be heat treated. Who knows.

[AaronGTR]

If they came with guide plates they are more than likely factory heat treated and should work. The older engines with guide plates were heat treated. As long as they are the right length for your app then go ahead and use them. I know the ones for the self aligning rockers weren't heat treated. I checked on it when I did my rockers. Only reason I had to order custom ones is because I have a '00 3400 and the pushrod length is longer than some of the older engines with guide plates. I couldn't find any stock ones the right length. It wasn't too expensive to get custom ones (just over a hundred dollars, can't find the receipt right now), and I planned on getting a cam and stiffer valve springs later anyway, so I got some nice high strength heat treated chromoly ones. A little over kill maybe, but I know I'll never have a pushrod fail.


I'll definitely keep an eye on this. I know some people on gagt.com who don't want to go to the trouble and expense of installing a cam but may be interested in a higher ratio rocker.

[geoffinbc]

I went to a parts trade show last night. Everone in existance was there EXCEPT CRANE. I was so choked I wanted to see the damn things.

However there are some pretty good alternatives. Comp has some pretty small rocker arms that would most likely work. http://www.compcams.com/Technical/Cu...g/HTML/311.asp

Check out the LS1/LS6 ratios they are 1.75 and 1.85. They are probabally cheeper than the Gold Race and are a nice alternative. Again judging by the back of the rocker they would probabally work without clearance.

[bszopi]

They are actually quite more expensive. Did a search on Summit... The Cranes were $300 for 16 while the Comps were $490 for 16.

[geoffinbc]

Ouch!! And WHY???

I would never pay more for cast than billet. Thats dumb. Ohwell Cranes look like the better answer to me then.

[bszopi]

Oops... correction. The Crane's are $399 for 16. The Comp's are $32.99 each.

Not sure on the difference... BUT, Summit has 2 different models. There is the 144750A-16 which is just listed as 1.7 ratio rocker arms and then there is the 144750-16 (so, minus the A) which are the Pro Gold Race Rockers. That setup lists for $680.

[oleman]

I have a 60v6 3100 in a corsica as a currently broken daily driver that I am in the process of overhauling.
Why are we spending all this money trying to get power from this turnip of an engine.
A small block chevy will be more reliable and have more streetable power than we will ever get with one of these 60v6 engines.
Daily driver maybe, hotrod at any reasonable cost, never.
Of course I am not too old to learn!!

[bszopi]

Because anyone can make an SBC a hot rod. It takes thought, determination and ingenuity to make a 660 a hot rod.

[RacerX11]

I have a 60v6 3100 in a corsica as a currently broken daily driver that I am in the process of overhauling.
Why are we spending all this money trying to get power from this turnip of an engine.
A small block chevy will be more reliable and have more streetable power than we will ever get with one of these 60v6 engines.
Daily driver maybe, hotrod at any reasonable cost, never.
Of course I am not too old to learn!!

Tell you what..go try to stuff a small block chevy into your Corsica, and when it is running and driven daily, come back and tell us just how easy and cheap it was to do.

Marty

[hamondale]

Why are we spending all this money trying to get power from this turnip of an engine.
A small block chevy will be more reliable and have more streetable power than we will ever get with one of these 60v6 engines.

I think it's a nice package for small cars. I've seen Sprites like mine with V8's. They're nose heavy, overpowered, and hard to cool. Plus you need short legs or small feet. Look at http://tinyurl.com/5a92d
Would a SBC be better than my 3.4 in there?
H

[geoffinbc]

Oops... correction. The Crane's are $399 for 16. The Comp's are $32.99 each.

Not sure on the difference... BUT, Summit has 2 different models. There is the 144750A-16 which is just listed as 1.7 ratio rocker arms and then there is the 144750-16 (so, minus the A) which are the Pro Gold Race Rockers. That setup lists for $680.

Crane sells a full kit to convert an LS1 or just a set of rocker with nuts. No guide plates or pushrods.

[geoffinbc]

I have a 60v6 3100 in a corsica as a currently broken daily driver that I am in the process of overhauling.
Why are we spending all this money trying to get power from this turnip of an engine.
A small block chevy will be more reliable and have more streetable power than we will ever get with one of these 60v6 engines.
Daily driver maybe, hotrod at any reasonable cost, never.
Of course I am not too old to learn!!

A smallblock does not fit into everything. Plus there are alot of guys with V6's that will knock off a Camaro and they have far less money invested than the price of a Camaro. Then they drive home at close to 30MPG.

I would never touch an old smallblock for my truck. If I got anything it would be an LS1. Because like it was said before a smallblock is HEAVY and I already have bad weight distribution. Oh and a Smallblock is no more relaible than a 660. I have not had a single problem to date with my motor.