Rocker arm questions
Rocker arm questions I'm currently helping a friend out with an LS1 swap into a 90 Nissan 300z car. He bought some patriot heads (which I'm sure are garbage) and I noticed that the heads looked to be machined for pedestal mounts just like the stockers. Being a SBF guy and everything I deal with has stud rollers rockers, I'm pretty amazed that a lot of you LS1 guys seem to be running pedestal mount rockers, especially with the RPM's you guys turn.
My question is what do you guys run for rockers usually? And if you re-use the pedestal mounts, what do you do to set the pre-load, shim kit?.. or is there a style of rocker with an adjustable pushrod cup that you use? I'm just looking for some direction because LS1 engines are an entirely new animal to me.
BTW I've searched, and looked in the stickys and haven't found an answer to my question.
My question is what do you guys run for rockers usually? And if you re-use the pedestal mounts, what do you do to set the pre-load, shim kit?.. or is there a style of rocker with an adjustable pushrod cup that you use? I'm just looking for some direction because LS1 engines are an entirely new animal to me.
BTW I've searched, and looked in the stickys and haven't found an answer to my question.
A lot seem to favor using the stock rockers with the trunion upgrade as the stock rockers seem to have the best reliability. One of the reasons for the trunion upgrade is sometimes the needle rollers fall out of the stock rockers but the rocker body itself is fairly strong. I went with some yella terra shaft mount rockers for the TFS heads I just installed. Its what they recommend but you can get a shim kit & use the stockers. Preload is set by pushrod length. Stock pushrod length is 7.400. Trickflow recommends 7.5 inch pushrods for their heads but I had to go with 7.550 rods.
I'm currently helping a friend out with an LS1 swap into a 90 Nissan 300z car. He bought some patriot heads (which I'm sure are garbage) and I noticed that the heads looked to be machined for pedestal mounts just like the stockers. Being a SBF guy and everything I deal with has stud rollers rockers, I'm pretty amazed that a lot of you LS1 guys seem to be running pedestal mount rockers, especially with the RPM's you guys turn.
My question is what do you guys run for rockers usually? And if you re-use the pedestal mounts, what do you do to set the pre-load, shim kit?.. or is there a style of rocker with an adjustable pushrod cup that you use? I'm just looking for some direction because LS1 engines are an entirely new animal to me.
BTW I've searched, and looked in the stickys and haven't found an answer to my question.
My question is what do you guys run for rockers usually? And if you re-use the pedestal mounts, what do you do to set the pre-load, shim kit?.. or is there a style of rocker with an adjustable pushrod cup that you use? I'm just looking for some direction because LS1 engines are an entirely new animal to me.
BTW I've searched, and looked in the stickys and haven't found an answer to my question.
