Alright, so after my terrible experience with installing my cam i'm almost done doing it again, This time the right way.
The cam specs from comp
I took the heads off and went to the machine shop as I added some eyebrows to my pistons from being two teeth off advanced bending my intake valves
I also took the opportunity to port the heads, I didn't go too crazy but they look really good and I followed a bunch of advice here on the forums and many other sources. I didn't remove the rocker bolt hump but did most of the work in the bowl and valve guide area
I had them surfaced and new intake valves installed with some new used 1mm larger exhaust valves from an l92/ls3 and obviously a valve job with those.
They installed my springs (pac 1519 iirc) with some new retainers and viton valve seals from brian tooley racing
I installed some new lunati street link bar lifters and cleaned the surface of the block then installed the gaskets (stock gm) and torqued the new arp head bolts down to spec after wicking the oil/coolant from the holes and spraying carb cleaner and chasing the threads.
I then replaced all the trunion bearings with new comp cams bearings and used the comp cams pushrod length checker to determine the pushrod length
I got 7.325 pushrods as that is what I determined would give me the preload on the new lunati's that I wanted iirc they are going to be .040-.045
This part I am confident about as I did the math about 20 times
I also ordered new arp cam gear bolts and loctite and torqued them down after of course re-timing the cam at #1 tdc and aligning dot to dot.
Then I installed the new pushrods and torqued the rockers down to 22 ft lbs. and spun the motor over to check for interference.
As far as I can tell there is no ptv issue and it spins over nicely( wouldn't assume with this cam there would be any at all but I'm unsure of myself at this point) (sparkplugs removed and only one cylinder has the rockers installed) I watched the intake valve to check for any abrupt movement or bending then did the same for the exhaust. All feels and looks normal. The only clicking or noise I hear the the chain slack changing back and forth from sliding over the cam lobes (which i'm pretty sure is normal.)
And this is where I am right now. I would like to hear some advice on ptv clearance with this cam. As of right now I'm more worried about the exhaust side of the engine then the intake side as I have some newly added piston reliefs on the intake side and the timing is now correct. Giving me all the clearance I would need on that side I would think.
But now that the timing is dot to dot and I have bigger exhaust valves (not much) how close do you think they are?
They do not hit as confirmed with a mirror and a light while turning it over by hand and there is no resistance besides the pressure of the spring.
But as you can see I have reason to be a little worried/cautious as doing it a third time is really gonna set me back not to mention dent my moral a good bit.
I've done everything to the best of my knowledge and by myself(with lots of research) to be sure it is done correctly and double checked triple checked and id like someone to review my build that has a bit more knowledge on stock ls2 block clearances and cam duration lift and ptv experience before I put it back together and attempt a startup.
Thanks much!
The cam specs from comp
I took the heads off and went to the machine shop as I added some eyebrows to my pistons from being two teeth off advanced bending my intake valves
I also took the opportunity to port the heads, I didn't go too crazy but they look really good and I followed a bunch of advice here on the forums and many other sources. I didn't remove the rocker bolt hump but did most of the work in the bowl and valve guide area
I had them surfaced and new intake valves installed with some new used 1mm larger exhaust valves from an l92/ls3 and obviously a valve job with those.
They installed my springs (pac 1519 iirc) with some new retainers and viton valve seals from brian tooley racing
I installed some new lunati street link bar lifters and cleaned the surface of the block then installed the gaskets (stock gm) and torqued the new arp head bolts down to spec after wicking the oil/coolant from the holes and spraying carb cleaner and chasing the threads.
I then replaced all the trunion bearings with new comp cams bearings and used the comp cams pushrod length checker to determine the pushrod length
I got 7.325 pushrods as that is what I determined would give me the preload on the new lunati's that I wanted iirc they are going to be .040-.045
This part I am confident about as I did the math about 20 times
I also ordered new arp cam gear bolts and loctite and torqued them down after of course re-timing the cam at #1 tdc and aligning dot to dot.
Then I installed the new pushrods and torqued the rockers down to 22 ft lbs. and spun the motor over to check for interference.
As far as I can tell there is no ptv issue and it spins over nicely( wouldn't assume with this cam there would be any at all but I'm unsure of myself at this point) (sparkplugs removed and only one cylinder has the rockers installed) I watched the intake valve to check for any abrupt movement or bending then did the same for the exhaust. All feels and looks normal. The only clicking or noise I hear the the chain slack changing back and forth from sliding over the cam lobes (which i'm pretty sure is normal.)
And this is where I am right now. I would like to hear some advice on ptv clearance with this cam. As of right now I'm more worried about the exhaust side of the engine then the intake side as I have some newly added piston reliefs on the intake side and the timing is now correct. Giving me all the clearance I would need on that side I would think.
But now that the timing is dot to dot and I have bigger exhaust valves (not much) how close do you think they are?
They do not hit as confirmed with a mirror and a light while turning it over by hand and there is no resistance besides the pressure of the spring.
But as you can see I have reason to be a little worried/cautious as doing it a third time is really gonna set me back not to mention dent my moral a good bit.
I've done everything to the best of my knowledge and by myself(with lots of research) to be sure it is done correctly and double checked triple checked and id like someone to review my build that has a bit more knowledge on stock ls2 block clearances and cam duration lift and ptv experience before I put it back together and attempt a startup.
Thanks much!