xtremerevolution Posted June 4, 2010 Report Share Posted June 4, 2010 This is a long shot, but I'd like to get some information from some knowledgeable people. Is it at all possible for me to use my L27 1.8 ratio roller rockers on an L67? They're 5/16" studs, and that's about all I know. What studs do the L67's use? Quote Link to comment Share on other sites More sharing options...
alec_b Posted June 4, 2010 Report Share Posted June 4, 2010 (edited) I'm for sure not an expert, but I don't see why you couldn't. Unless there's a major difference in design between the NA rockers and SC rockers. Then again, SI rockers may be different than SII rockers... Ok I'll stop and let a pro chime in. EDIT - I don't think it will work. Yella Terra is one of the few companies that makes rockers for the SI 3800, and they list the 5/16 pedestal mount rockers as a #6659 for the 1.8's and the SII 5/16 pedestal mount rockers are a #6625 for the 1.8's. I'd guess you're SOL on swapping. Edited June 4, 2010 by alec_b Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 4, 2010 Author Report Share Posted June 4, 2010 The difference between the pedestal mounts, which I did check and have details on gmforum.com for, is 2.2mm in height. That's something I can either solve with the use of shims, or **maybe** ignore since the hydraulic lifter would pick up that slack easily. My sister in law has a 96 Regal so I might pull the front valve cover off and see how they fit. The bigger question is whether or not the roller will be centered on the valve at its highest and lowest point to prevent side loads to the valve guides and wear them prematurely. Then gain, its not like non-roller tip stock rockers don't cause side loads either. I just need to verify that geometry first. Distance from center of fulcrum to pushrod and to valve. Quote Link to comment Share on other sites More sharing options...
alec_b Posted June 4, 2010 Report Share Posted June 4, 2010 Yea the best thing you could do is just get one of each side by side and break out the caliper and measure. I'd be worried about geometry also, being as GM made significant changes to both the bottom and the top end of the 3800 series between generations. Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 4, 2010 Author Report Share Posted June 4, 2010 Yea the best thing you could do is just get one of each side by side and break out the caliper and measure. I'd be worried about geometry also, being as GM made significant changes to both the bottom and the top end of the 3800 series between generations. Well, the biggest things to be worried about are where the roller tip touches the valve at the highest and lowest point, and the height from the base. There's some wiggle room for that pushrod. I'll let you all know how it goes. I paid $350 for these rockers, and they're now up to $370, and it would be awesome to be able to swap them over to the L67. Quote Link to comment Share on other sites More sharing options...
Addicted to eaton Posted June 5, 2010 Report Share Posted June 5, 2010 I have my heads, and rockers off, If you want me to masure something. I will Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 5, 2010 Author Report Share Posted June 5, 2010 I have my heads, and rockers off, If you want me to masure something. I will Length and girth. j/k fulcrum center to valve tip, fulcrum center to pushrod tip Quote Link to comment Share on other sites More sharing options...
Addicted to eaton Posted June 5, 2010 Report Share Posted June 5, 2010 will do *Hang on i got another call, Ya i am to stupid to talk to you* Quote Link to comment Share on other sites More sharing options...
Andrew Posted June 8, 2010 Report Share Posted June 8, 2010 you could email Zoomer, i bet he could tell you. Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 8, 2010 Author Report Share Posted June 8, 2010 you could email Zoomer, i bet he could tell you. Zoomer? Never heard of him. Quote Link to comment Share on other sites More sharing options...
kuntzie Posted June 8, 2010 Report Share Posted June 8, 2010 not gunna work... go on zzp performance, they list only 1 set of rockers for the series I.... they arent even really close in terms of engines, like u cant put an l67 top end on an l27 Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 8, 2010 Author Report Share Posted June 8, 2010 (edited) not gunna work... go on zzp performance, they list only 1 set of rockers for the series I.... they arent even really close in terms of engines, like u cant put an l67 top end on an l27 Kuntzie, I'm well aware, but you CAN put a top end from an L67 to an L27. Do a search here for S1/S2 hybrid. You'll find a guy who fit S2 heads on an L27 bottom end, and he stopped with trying to make a LIM and get a custom cam made. However, it is possible, because with the exception of the 1" difference in deck height, the short blocks are identical. I've done more than my fair share of research on this. I know ZZP only lists one for the S1 and others for the S2, and I did buy mine from ZZP knowing that. I'm just trying to figure out if there's a way to make them fit. If the distance from pushrod tip and valve tip to the fulcrum center are the same between both rockers, all I should really need is to worry about the height of the fulcrum and the pushrod length, both of which are cheaper than a used set of S2 rockers, and I'm going to have a hard time selling the S1 rockers. Edited June 8, 2010 by xtremerevolution Quote Link to comment Share on other sites More sharing options...
kuntzie Posted June 9, 2010 Report Share Posted June 9, 2010 tak some pics and we can compare, i have a set of series 2/3 1.9 aluminum rockers ill be selling, ill take some pics in the morning. Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 9, 2010 Author Report Share Posted June 9, 2010 tak some pics and we can compare, i have a set of series 2/3 1.9 aluminum rockers ill be selling, ill take some pics in the morning. I might be interested in those rockers, depending on the price. I'll take some pics. Thanks man! Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted June 9, 2010 Report Share Posted June 9, 2010 will do *Hang on i got another call, Ya i am to stupid to talk to you* I don't know what length is.....and i don't know what girth means. whoa, hold on, slow down professor. Quote Link to comment Share on other sites More sharing options...
kuntzie Posted June 9, 2010 Report Share Posted June 9, 2010 they have under 1000km on them, 300 bucks Quote Link to comment Share on other sites More sharing options...
xtremerevolution Posted June 10, 2010 Author Report Share Posted June 10, 2010 they have under 1000km on them, 300 bucks Guess I should have bought these huh: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=110541404447&viewitem=&sspagename=STRK%3AMEWAX%3AIT For that price, I'd rather go with a cam. Thanks though. Quote Link to comment Share on other sites More sharing options...
Addicted to eaton Posted June 10, 2010 Report Share Posted June 10, 2010 damn it! i forgot about the auction, i got out bid :( oh well lol. Quote Link to comment Share on other sites More sharing options...
Andrew Posted June 12, 2010 Report Share Posted June 12, 2010 Zoomer? Never heard of him.he is the top dog at ZZP. zoomer@aol.com i believe. Quote Link to comment Share on other sites More sharing options...
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