Thread: I don't get it, with VS CAM stock springs are fine, but rockers need stiffer springs?

will a cam with 3.4 run you up to 42.5# injectors?

thats only when you're making alot of boost at 3.2 pulley is when you wanna get 42.5#'s?

Yeah I was getting the cam install kit too from zzp

Whats scaring me away from a cam upgrade is the stories I've heard about cam bearings failing shortly after a cam swap... since my engine has 100.000 miles on it I'm a bit concerned that might happen to me.
I mean... 100.000 is not "very" high mileage, but certainly not "fresh" either.

What do you guys think? Should i risk a cam swap?

Let's see...cam, gen V, headers, ported heads, IC'ed, and 5 speed...all at 219k. Nah...you should buy an new block if you wanna cam.

haha ok... point taken

but still happy to hear more opinions

There are a lot of people here who have modded well past 100k. I think the big thing is checking over your block carefully. Do compression, cylinder leakdown, and oil pressure tests before you think about modding. Make sure your engine is mechanically up to the challenge. While disassembling, check things over too. Like if you are doing a cam, make sure you look in the cam journals at the bearings. If they look wiped, you can replace them even with the engine in the car with a cam bearing tool. When I did all my stuff on my 3800, these were the steps I took, and it runs awesome and makes great power. Unfortunately, the trans did not fare as well, but that's no fault of mine.

Wonder if the cam bearing failures are an aussy thing? Although the motors are identical to ours, they were not assembled in the states.. the parts were shipped in raw and machined there. We have already found a few differences between a aussy l67 and a usdm l67 via the crankshaft issue... it may be possible there are small differences in the cam?

will VS cam work with L76 springs? And will those springs be ok with a single row timing chain?