Cam Choices???
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On The Tree
Joined: Jan 2012
Posts: 198
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From: Canada NL
How many miles/km's did you have on the motor? See I am old school I was going to use all my old stuff to be honest. The car is only driven 3 times a week, and parked for winter months..
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Joined: Apr 2008
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Birdracing
whatever cam you get, also replace your stock valve springs as they won't be up to the task of higher lift & rpm's. Bee hive, alex or howard all seem to have good reports
LT4 cam is good but the LT4 springs were designed for the soduim filled lighter LT4 valves so they are not much of an upgrade with the Lt1 valves
you can use your stock lifters, PR and even stamped 1:5 rockers...but most would agree that 1:6 'roller" rockers would be better. if you do get 1:6 RR you can chose NSA or SA (self aligning). Many switch to guide plates and run NSA rockers but if that is what you do you will need to get hardened push rods. another point on PR is steping up to a .080 thick wall one to reduce/eliminate PR flex seen from higher RPM/lift motor mods running stock PR.
also if going with a roller rocker, for the same$, you can get 7/16" vs 3/8. You do need to replace your 3/8" rocker stids with 7/16" though. ARP
when replacing the springs, replace valve stem seals. felPro viton.
you just need to draw a line on how much you want to upgrade in the valve train when adding a cam....valve springs at a minimum but if that is all you do "I" would also replace the valve stem seals since they are right there on the spring swap
whatever cam you get, also replace your stock valve springs as they won't be up to the task of higher lift & rpm's. Bee hive, alex or howard all seem to have good reports
LT4 cam is good but the LT4 springs were designed for the soduim filled lighter LT4 valves so they are not much of an upgrade with the Lt1 valves
you can use your stock lifters, PR and even stamped 1:5 rockers...but most would agree that 1:6 'roller" rockers would be better. if you do get 1:6 RR you can chose NSA or SA (self aligning). Many switch to guide plates and run NSA rockers but if that is what you do you will need to get hardened push rods. another point on PR is steping up to a .080 thick wall one to reduce/eliminate PR flex seen from higher RPM/lift motor mods running stock PR.
also if going with a roller rocker, for the same$, you can get 7/16" vs 3/8. You do need to replace your 3/8" rocker stids with 7/16" though. ARP
when replacing the springs, replace valve stem seals. felPro viton.
you just need to draw a line on how much you want to upgrade in the valve train when adding a cam....valve springs at a minimum but if that is all you do "I" would also replace the valve stem seals since they are right there on the spring swap
