1.6:1 rocker arms - Performance Forum

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1.6:1 rocker arms
Monday, July 11, 2005 4:20 PM
Would the valve cover on the 2200 need to be changed if you were to install th 1.6, i just need a quick answer, thanks

Re: 1.6:1 rocker arms
Monday, July 11, 2005 4:54 PM
it needs slight modification.

http://www.howellautomotive.com/Howell/Store/catalog/catalog/product_info.php?cPath=41_154_383&products_id=1232




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Re: 1.6:1 rocker arms
Monday, July 11, 2005 7:15 PM
go with those...good imporvement.



Re: 1.6:1 rocker arms
Tuesday, August 09, 2005 2:21 PM
anyone know the Crane Part number for those rockers....
Re: 1.6:1 rocker arms
Tuesday, August 09, 2005 3:12 PM
Howell puts these kit together from parts available over the counter, but the part number for the rockers is 10758-16. You probably wont be able to put together the parts as cheaply as Howell sells them, unless you go in it with someone else(they come in sets of 16).





Re: 1.6:1 rocker arms
Tuesday, August 09, 2005 11:21 PM
yes mad jack is correct. just buy them from howell. you might invest in the pushrods too, they are good pushrods.




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Re: 1.6:1 rocker arms
Tuesday, August 09, 2005 11:43 PM
or find someone to split a V8 kit with you.... so much cheaper
Re: 1.6:1 rocker arms
Tuesday, August 09, 2005 11:44 PM
Wes - JCO North President wrote:or find someone to split a V8 kit with you.... so much cheaper


in which case you would still have to gather all the part numbers for everything. just order it from howell.




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Re: 1.6:1 rocker arms
Wednesday, August 10, 2005 12:18 AM
What pushrods would be good to use with these?






Re: 1.6:1 rocker arms
Wednesday, August 10, 2005 12:30 AM
Phlatcav wrote:What pushrods would be good to use with these?


the crane pushrods, also available from Howell.

clickie





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Re: 1.6:1 rocker arms
Wednesday, August 10, 2005 8:13 AM
Spotabee Racing wrote:
Wes - JCO North President wrote:or find someone to split a V8 kit with you.... so much cheaper


in which case you would still have to gather all the part numbers for everything. just order it from howell.


what's the difference.... studs different or something?

Re: 1.6:1 rocker arms
Wednesday, August 10, 2005 12:45 PM
Yes, they have an 8mm base and 3/8" top.They are made by ARP.





Re: 1.6:1 rocker arms
Wednesday, August 10, 2005 1:39 PM
So.... those rocker arms won't bolt up on the factory studs... due to.. wrong stud size... or too short? If wrong size... what is the factory stud size?

and that's an M8-1.25mm base, correct?

Thanks alot!!
Re: 1.6:1 rocker arms
Thursday, August 11, 2005 12:24 AM
Wes - JCO North President wrote:So.... those rocker arms won't bolt up on the factory studs... due to.. wrong stud size... or too short? If wrong size... what is the factory stud size?

and that's an M8-1.25mm base, correct?

Thanks alot!!


from what i can tell, the studs seem to be longer and the top nuts included with the rocker kit are a different thread than stock.




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Re: 1.6:1 rocker arms
Thursday, August 11, 2005 2:13 AM
Could you just use the old top nuts?


Speed costs... How fast ya wanna go??
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Re: 1.6:1 rocker arms
Thursday, August 11, 2005 5:57 AM
The Crane rockers and the Howell kit come with 3/8" polly-locks, which are much stronger and more secure.





Re: 1.6:1 rocker arms
Thursday, August 11, 2005 8:41 AM
thank you for all the answers guys.... extremely helpful...

one more question.... are the factory 98-02 2200 rockers stud screw in, or a press in job

I know the replacments are screw ins
Re: 1.6:1 rocker arms
Thursday, August 11, 2005 3:07 PM
Screw-in 8mmX1.25, thats why the ARP/Howell kit come with the studs.





Re: 1.6:1 rocker arms
Thursday, August 11, 2005 3:39 PM
Does this Kit Fit the 96-97 2.2 ohv it says for 98-up I just want to be sure before I but any help would be great
Re: 1.6:1 rocker arms
Thursday, August 11, 2005 7:05 PM
Yes, but you have to remove the guide plates. These rockers are self-guided. You will also need to put some washers under the studs tom make up for the thickness of the guide plates. Also note, that on the washers under the intake studs, the washers will need to ground down on one side to make clearance for the head bolt next to that stud.

After that just follow the instructions on Howell's web site to set the valve lash. located here: http://www.howellautomotive.com/Howell/Store/catalog/catalog/product_info.php?cPath=41_154_383&products_id=1232


.





Re: 1.6:1 rocker arms
Thursday, August 11, 2005 7:15 PM
kool thanks alot I am building a N/A motor and want to due this to it thanks alot.

Re: 1.6:1 rocker arms
Thursday, August 11, 2005 10:27 PM
Christopher Altland wrote:Does this Kit Fit the 96-97 2.2 ohv it says for 98-up I just want to be sure before I but any help would be great


no. for the 95-97 LN2 you need the comp cams kit from Summit Racing. The part number for the rockers is CCA-1414-x (the x is how many rockers you want). The cheapest option is to buy 12 (CCA-1414-12) because it is the full kit, includes rocker arms, pivot balls, and top nuts. The studs you will have to buy separately from GM. Search around on the site for the part number. It's like 47xxxx (something something something) lol can't remember it exactly.




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Re: 1.6:1 rocker arms
Friday, August 12, 2005 3:30 PM
Spotabee, it does fit, I did it to my 2.2L. Just follow the instructions above.

I did forget to mention I had to get the ARP 100-7221 Stud set(4 sets), 10mm base with 3/8" tops. The studs that come in the Howell kit fit the 2200's 8mm stud bosses.





Re: 1.6:1 rocker arms
Friday, August 12, 2005 9:57 PM
i did it great mod the stock studs will not work because they are none adjustable this is why the new ones will be longer also on the guides just grind more clearance on them
excellent instructions from the site had all part#s everything search for it bout 200 $ mod
Re: 1.6:1 rocker arms
Saturday, August 13, 2005 12:05 AM
Mine are on the way and some crane pushrods YAY!






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