Just installed Cam
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No they're the speed inc hardened 7.4
Edit: When I get home here in a bit I will pull the covers and check lash. Could they be too long? They are non-adjustable Jesel Shaft Mount rockers. Which ran fine before the cam swap. The only thing changing would be valve springs, cam, and pushrods.... That would indicate cam has a smaller base circle? But, Speed Inc said to use the 7.4's. What should lash be? .060?
Rule out one thing at a time I guess..
Edit: When I get home here in a bit I will pull the covers and check lash. Could they be too long? They are non-adjustable Jesel Shaft Mount rockers. Which ran fine before the cam swap. The only thing changing would be valve springs, cam, and pushrods.... That would indicate cam has a smaller base circle? But, Speed Inc said to use the 7.4's. What should lash be? .060?
Rule out one thing at a time I guess..
Last edited by 19Nova62; Jun 7, 2012 at 10:26 AM.
1st: How did you get Jesel Shaft Mounts to clear stock valve covers (spacers?)?
2nd: Did you recess (with a dremel) the area behind on the rocker on the heads, there is not enough clearance back there on stock heads for the Jesel rockers. (This is the area directly behind the rocker). I used aftermarket valve covers, and dremelled the area clear behind each rocker - PITA.
3rd: What preload did you use/how did you setup your adjustable Jesel's? Here is a video of mine, mods in signature (I'm having cam sensor issues - looks to be cam related though).
2nd: Did you recess (with a dremel) the area behind on the rocker on the heads, there is not enough clearance back there on stock heads for the Jesel rockers. (This is the area directly behind the rocker). I used aftermarket valve covers, and dremelled the area clear behind each rocker - PITA.
3rd: What preload did you use/how did you setup your adjustable Jesel's? Here is a video of mine, mods in signature (I'm having cam sensor issues - looks to be cam related though).
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Got home, reset computer and started it up. Water on the ground. Sounds much better than before.
http://s6.photobucket.com/albums/y20...=VIDEO0018.mp4
Edit: Don't know why the video is sideways. Sorry.
http://s6.photobucket.com/albums/y20...=VIDEO0018.mp4
Edit: Don't know why the video is sideways. Sorry.
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And another one once it got up to temp. I think the sound quality on this one is better.
http://s6.photobucket.com/albums/y20...=VIDEO0019.mp4
http://s6.photobucket.com/albums/y20...=VIDEO0019.mp4
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Verdad Gallardo How did you set your preload? You may need shorter pushrods by the sounds of it. Did your Jesel's come with a pushrod length checker?
As stated, LS1s with a cam make considerable valve train noise, the last video seems like quite an improvement over the first.
Lastly, how long did the engine sit for before being fired up?
As stated, LS1s with a cam make considerable valve train noise, the last video seems like quite an improvement over the first.
Lastly, how long did the engine sit for before being fired up?
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In all honesty I didn't. I know I should have. I was told by the guys I got the pushrods and cam from that they were undoubtedly 7.4....
The last two videos were from the same start. Usually I have to let it sit over night
The last two videos were from the same start. Usually I have to let it sit over night
7.4s might be alright with stock rockers, but Jesel shaft mounts change the length of pushrod needed - at least mine did even with the adjustable set.
I would pull the rockers, get a pushrod checker, and check with Jesel for proper installation to attain your desired preload. This will quiet your valvetrain considerably.
I would pull the rockers, get a pushrod checker, and check with Jesel for proper installation to attain your desired preload. This will quiet your valvetrain considerably.
