skongolf

I just got a 2005 5.3 engine with 706 heads and 97K miles to put into my 72 Chevelle. Since it is sitting on a stand I thought about swapping the cam before I put it in the car. I found a good deal on a Lunati cam with the following specs:
Duration 214/218
Valve lift .555/.551
LSA 117.5
Unfortunately no part number on it. I want to keep my mpg's but get a little HP boost since it will be a daily driver. Anyway, would that be a viable cam or would i need to do heads or at least valve springs to do the swap?
Just want some feedback.

gagliano7

That is a nice cam for a 5.3 but you will have to change valve springs.

thunderstruck507

iTrader: (18)

you will need new valve springs at minimum for any cam swap, but with 100k miles on stock springs that's not a bad thing

on a cam like that you can probably use the ls6/ls2/ls3 springs which are ~$60 new
you should also highly consider hardened pushrods, stock ones are junk and prone to bending

99Bluz28

iTrader: (35)

I would be careful about even suggesting ls6/ls2/ls3 springs, since the ramp rates of the cam lobes are unknown at the time, an we all know that the lobe lift doesn't tell you how aggressive, or mild the lobes are. Imo if that cam happens to have the more aggressive VooDoo lobes, then you'll definitely want valve springs with higher seat, and open lbs pressure, like the PAC 1219X and 1211X, if you plan on running beehive springs or BTR or PAC duals. If your unable to verify the lobes used on the Lunati cam then I'd highly suggest erring on the safe side.

thunderstruck507

iTrader: (18)

also true, should have been more clear...but I did say "probably"

been a stressful day

99Bluz28

iTrader: (35)

Yeah I notice that, I also realized my wording seemed a tad harsh so I changed it.