I cant get a straight answer to this question...do i need to go with shaft mounts, or am i goin to be fine with standard crane gold 1.6 rockers?
I am only reving to 6500 with a CC305 cam...shooting for over 700rwhp.
If i cant use the standard rockers, what are my options...looking for the cheapest one obviously.
Thanks

ps. does anyone have a part number for the intake gasket that should be used with the LT4 intake?
thanks!

 

This one:
And this one:
DO NOT go together...

 

Please tell me what other parts and prep you are using in this motor.

Blower? LT1 block?

 

From AFR's site.

It says "not recommended" it doesn't say you can't.

 

ya its a lt1 block. Made close to 700rwhp with my previous heads, just decided to go with some biggers heads since the engine was gettin freshened up. Callies crank, oliver rods, diamond pistons, etc etc D1 18+ psi, oh ya using a Cc305 cam hehe

 

I'm waiting for the 227 eliminator series to come out before I finish assembly on my 427sbc, and everything I gathered from the guys running the current 227's is either one will work. I know based off my old 210's the rockers were a little off as far as roller tip was not 100% centered on valve tip so I can only imagine the 227's which are spread even further apart, this will be exagurated, hence requiring the offset rockers to bring them to valve tip center and preventing premature wear on parts and possbily expensive engine failure.

At the level I want (I'm only shooting for 625-650 NA) shaft rockers with the offset is really a no brainer. We run a set of Jesels on the S10 and they are light years better than the old rocker arm's like your used to. Expensive yes, but once you install them and stop having to check lash (if running a solid flat tappet or solid roller) you will be sold as well, I know I was. I'm still waiting to decide though since many guys are having great results with the T&D rockers, and Crane seems to be making a name for themselves as well in the shaft rocker department, by the end of the year there should be enough conclusive evidence if either one of these will hold up for the long haul and I will base my final purchase descion then, but I know the Jesel's we run have never given us any problems at all, just looking to try something different.

 

I'm running shaft mounts with my AFR 220s. If you don't use shaft mounts, then you have to run a girdle. I consider girdles kind of a bandaid so I went with the shaft mounted rockers.

I had a bad experience once with some rocker arm studs once too...

 

You don’t need to go with shaft mounts, but I recommend them. I have AFR 210's on my 396, and I’m running Jesel SS shafts. When the motor was first built, I had Comp roller rockers, 7/16 studs, and AFR guide plates. After having a Comp R lifter go on me, and upgrading to Morels, I decided to upgrade to shaft mounts. By far, it was the best money spent on my motor. As far as valve train stiffness and stability, there is virtually no deflection with the shafts. Also, as IHI said, the roller tip is not centered on the tip of the valve with the stud mount. I can only guess that it would be worse with the 227 head, as the valve spacing on the 220 and 227 head are further apart than the 210. As far as cost goes, once you add up the price of a stud mount setup, the rockers, studs, guide plates, and girdle, you are not far away from a set of Jesel SS shafts. The extra money spent pays off 10 times in the valve train department: much better valve train stiffness, almost NO deflection, and valve lash that stays where you adjust it. If you go with them, you will wonder why you messed around with stud mounts.



Nick

 

can u guys give me some part numbers to some of the cheaper shaft mounts.....i just want to point out, that i am not running anyting crazy as far as cam its a CC305 cam, not some crazy solid roller. What about offset rocker arms? wOuld that be an option?

 

Agreed with NJLT1SS - You can get by with stud rockers, but shaft mount is the right way to do it...also by the time you buy studs, guideplates, rockers, stud girdle, etc... you are at the same cost as a stand kit.

Look at the jessel sportsman series stuff.

GET A BLOWER CAM!!

 

the thing is i already have studs, guideplates and rockers etc...and why would i need a stud gridle with a cam with a massive lift of .510 / .510

who carries the jessle sportsman series shaft mounts and how much do they run

 

http://www.jeselonline.com/index.php?categoryid=62&

It's $859 through jegs - that link has the part number specifically for those AFR 227's

 

They seem expensive untill you see whats involved in making them, and the quality of the parts.

 

Whooooa, if your going to go with Jesels, give me a hollar and I can put you in contact with a frined of mine that is a dealer, should be able to beat that price up.

 

what offset do i need? (.450 right)