Chevy s10 4cylinder to v-8 conversion?

Question

Ok I took my 4 cylinder engine out of my truck and put a v-8 in my truck but the battery isn.t staying charged I had the alternator tested a few months ago and they said it was fine So what is the scoop does anyone know where I can find any wiring diagrams

Answer 1

Other sites for help are.www.mygmlink.com   www.autozonefreewireinfo.com   www.automotivewiring.info  or  www.greatwiring.info.com

Answer 2

AUTOZONE.COM they have diagrams for everything

Answer 3

since this vehicle didnt ever come with a v8 use a 4.3 litre v6 wiring diagram, thats if

the person who put the engine in used original wiring.

if he wired it himself you might be spending big bucks having a mechanic track down the problem

good luck

Answer 4

batt not staying charge

but is it charging

if no ........

if u now someone that rebuild them

here ad rebuild alt from shop also made me wire to alt to batt

there specialist and can find prom fast

you,re best bet

if yes .......

drainage.. bad battery short  ect

Answer 5

better change the rear end or you will tear it out. it was set up for the 4 cylinder. what about the voltage regulator, did they test it? also what about the cables, are they good, clean and tight?

Answer 6

Congrats on the conversion. I know a 4.3L computer will run a 305 V8 but not vice versa. But thats besides the point. If all your connections are good, I recommend the following.

Your battery may have a dead cell or is not strong enough for the job. If the alternator output is fine, the next step is the battery. If the battery has been drained multiple times and recharged, it is called deep cycling and will kill a battery very quickly. I recommend a battery check and replace it if necessary. Go for the largest capacity battery you can get. Since you have a V8 conversion, either a 305 or 350cid, use a battery with at least 650 Cold Cranking Amps or larger, versus a 4 cylinders 450-525 Cold Cranking Amps. Remember, Cranking a V8 can use 80% of the battery's capacity at the start up, then after its started, the alternator starts trickle charging the battery, hence the reason its output voltage is greater than the battery. After its started, the vehicle runs primarily off the alternator, unless you are pulling more from the alternator than it can provide, then it pulls directly off the battery, thus killing it slowly since it never recharges. Good Luck.