3SP

iTrader: (1)

Here's the starter I am using:

GM PN# 89017847
AC Delco PN# 323 1640 A22

But it sucks up too much voltage during cranking for the current battery (Odyssey PC925) so that I cannot datalog cranking.
I am searching for a stronger battery, but there is a space constraint on the battery. I am attacking this from both sides of the equation, starter demands and battery strength.

Looking for recommendations for a starter that can handle a stock compression ratio LS3 while demanding less from the battery than the current starter. Bonus points if it is more compact than the starter I am currently using.
GM PN# 890178GM PN# 89017847
AC Delco PN# 323 1640 A2247
AC Delco PN# 323 1640 A22

LilJayV10

iTrader: (39)

What size of battery cables are you using?

3SP

iTrader: (1)

4GA...they are in heat sleeves due to their proximity to exhaust, as well as the starter is in a DEI blanket due to the proximity to the header's collector

When I looked at some videos of 5th Gen Camaro SS's that were suffering from heatsoaked starters, my cranking is nothing like theirs. My cranking is still snappy and quick, it simply seems to gobble up a lot of voltage and causes VCM scanner to lose connection (which means I can't datalog hot starts), and causes a module or two in the car to throw a false error message which vanishes once the engine actually fires and the alternator is running.

LS1 TJ

On my LS swaps I always run 2 gauge welding cable. The welding cable has really fine wires. Read some where the finer the wire the better it transmits amps. Don't if that makes a difference but it works for me.
In regards to starters are there LS starters that have more gear reduction than a GM starter? Just thinking the more gear reduction the less amps needed?

LilJayV10

iTrader: (39)

I think a lot of the cranking issues on those cars is the battery in the trunk. Every one I have ever been in does it, not just when it's hot. The LS3 vettes don't have that issue. Heck I don't think I've ever seen another LS based platform have that issue and I "think" they all use pretty much the same or very similar starter.

I will say I don't ever recall any of the Chargers/Challengers/300s ive worked on having an extended crank and the battery is in the trunk on those.

When I installed my twin turbo kit I had to change to a MSD starter and that thing cranks fast!

I would do a voltage drop test while cranking on both positive and negative side from the battery to the posts to the engine bay (a voltage drop test is different than checking voltage. I say that because a lot of people don't know that)

I think that would give you an idea if your cables are big enough or not.

Have you checked to see how many amps the starter is actually pulling?

TrendSetter

more often than not its the cables or old battery rather than the starter thats the problem.

jasons69chevelle

Using a 13yo MSD starter and 2/0 gauge wire.
no problems

dw456post

Get a 2018 Silverado 5.3 starter.
Did you wire the power to the OBD plug? If it is wired wrong, when you turn the key to start, it will shut off the power. It has to have uninterrupted power.

H3Alpha

I ran an Oddessy 925 in my 09 Z06…..Worked fantastic….maybe check the cabling and engine block ground? Never had an issue with the 925 in that car…..rear mounted battery👍

Double06

iTrader: (1)

Will the Silverado LT starter mount correctly teethwise etc. to an LS motor? The Silverdo 1500 is a nice small starter so would be great if it works.

LS1 TJ

As far as I know all the gen 4 LS starters are all the same fitment wise. Don't know about the gen 5 LS starters. Quick trip to the parts store you could compare one to the other.

wannafbody

iTrader: (2)

Gen 3 5.3 starter is shorter than the 6.0 starter.

StorminMatt

4AWG is on the small side for battery cables. Especially for long runs, such as you might have if you relocate your battery. As others have suggested, you might want to opt for larger cable. Also, you might want to check your grounds to see if you have a grounding problem that is causing excessive resistance.

Jimbo1367

Stock LS3 Camaro starter is a great deal roughly $150 at GM dealers.

I checked eBay to find which dealers offered discounts. I bought mine out of Pittsburgh PA. I called them directly though.

01CamaroSSTx

iTrader: (3)

I cannot believe I'm still cranking an engine with the original starter that came with my 01 car.

low2001gmc

iTrader: (148)

I just swapped a 2014-2016 Silverado LT Starter in my 01 GMC LS3 Swap and only issue was having to use very thin bolt spacers as without would have a grinding sound. Smallwr and Starts Up Faster. Love it.

Doug G

I agree with the cables being under sized.
I did the battery relocation and 4ga... wouldn't crank, just click click click....went to 0ga welding cable, issue gone.

wannafbody

iTrader: (2)

It's good peace of mind to swap over to a truck starter since they have thick flanges and are less likely to break the short side and possibly the block.

01CamaroSSTx

iTrader: (3)

That's exactly what I plan to do if and when this one ever quits working. Another thing I did was move up to 4 AWG wire for the power and alternator ground and installed a starter solenoid on the firewall so I didn't have continuous power running down to the solenoid on the starter. I really didn't like having to connect my remote starter switch down there in order to roll over the engine.

cino

iTrader: (28)

Are all truck starters the same? What would be the truck starter to get?