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Discussion Starter · #1 ·
Hey guys, I just picked up a modified 2010 that has a custom cam from 187 customs. I just got the specs of cam and lift seems a little high for what I'm used to seeing in LSA motors but I am still not super knowledgeable about them. It's specs are 231/242 .640/.615 116.5+3. I know with how it sits with that cam the brakes suck, there isn't enough vacuum at idle and slow speeds to stop this thing. I had a BTR STG 3 in my 2011 and that thing just worked, sounded great, no brake problems and made power.

Next question, what all would be involved if I wanted to just change the cam, I know I would need front timing cover gaskets, but would oil pickup tube have to be removed and can all that just be moved to the side or out of the way and then I guess just pull the rockers and pushrods so I can push dowels thru to hold up lifters. I did my 2011 cam swap back in 2017, just been a while.
 

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Discussion Starter · #4 ·
Just get a cam install kit. Also get a new timing set and lifters and push rods. Plus all necessary gaskets
Well I was told also that it has new ls7 lifters installed. I'm not trying to pull the heads to change lifters if those are good. The valvetrain is surprisingly quiet. I am also going to remove valve cover this weekend and see if they changed the rockers, what I've seen from the video from 187 customs they just did the trunion kit. I don't know what length pushrods are installed, so would prob order a replacement set of those if I did the cam.
 

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Well I was told also that it has new ls7 lifters installed. I'm not trying to pull the heads to change lifters if those are good. The valvetrain is surprisingly quiet. I am also going to remove valve cover this weekend and see if they changed the rockers, what I've seen from the video from 187 customs they just did the trunion kit. I don't know what length pushrods are installed, so would prob order a replacement set of those if I did the cam.
We have a number of options for cams that will drive nicer then what you have now with a safer level of lift for stock rockers.
 

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We have a number of options for cams that will drive nicer then what you have now with a safer level of lift for stock rockers.
Also in support of your statement above Matt; net valve lifts of over ~0.600" do not work well with either stock heads, or many so called ported heads. It takes a well ported head to flow at or around 0.625" of valve lift.

Finally for the OP; dump those LS7 lifters once your open spring pressure gets much over 300 PSI.

Happy Holidays!
 
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