What is the normal or recommended cranking amp battery used in with this size engine.

The truck I own has two 650/450 cold cranking amp batteries and I'm wondering could this contribute to my non cranking problem during cold weather.

 

Yes, but how cold of weather are you talking about?

On my truck, I put in it's second set of non factory batteries, and a 4Kv high torque starter, now she starts as if it were 80 when its only 15*. I cant wait to see what it'll do when I let it get colder.

Edit: The new bats from NAPA were 850 CCA, I just went out and looked for ya.

 

I wouldn't think those batts are not big enough, I think you want 850 cca

 

Well I live in Georgia and cold is anything under 50. haha
Seriously, it has been around 25 to 30 lately and when I first try to start the
truck it starts draining the batteries rather quickly, to the point I have to jump it off and then it still takes a little turning to fire up. After the motor warms up the it will crank right up.

I did jump across the two big terminal on the GPR for about 20 seconds and tried to start the truck with no luck.

I got to looking at some battery recommendations down the list a bit and noticed most guys are using two 900/850 cca batteries where I barely have 900 cca with two combined. The extra amps should turn the starter faster and help fire it up during the cold days (under 50 of course).

I was just wondering should I stay on the path of glow plug ohming or swap the batteries first. The ones in it are 3 weeks old.

 

The first thing I would do is buy a GOOD set of the stock size batteries (~850 CCA). These should last you (in georgia) a very good long time. Secondly, if you have a 12V test light of some sort, when it gets real cold for you, put the + end of the test light on the GP side of the GPR, this will tell you when your GP's are really done heating the engine.

my .02

Edit: The GP & GPR should have power suplied to them for ~2 minutes. (or so I've been told)

 

I agree, first thing, put in minimum 850 cca batts before you do anything. If you don't have enough battery, all else is trivial.

 

Thanks, I'll give this a try.