anyone know if an LS1 starter will fit a 5.3 motor ? or any parts #

 

Yes, I have an LS1 starter on my 5.3. And a 6.0 Flexplate for a 4L80 too.

 

Thanks Bro

 

the only difference ive seen in ls startes is some starters have different bolt lengths than others.

 

Solenoid is clocked slightly different and the body length changes over the years, but for the most part they interchange with no fitment issues

Ill post up a few pics comparing a GTO starter to a LS1 Fbody starter later on

 

Please do post some pics of the GTO and LS1 F-Body starters, do you know if the LS1 F-Body starter will work with the GTO mn12 bellhousing?

Thanks, Dan

 

I have an 6.0 with 4L80E and the starter is different then the LS1

 

^^X2..

I have a 1999 Sierra 5.3 and the LS1 car Starter will NOT work. There is a Casting Lug on the Block that is in the way.

 

My 5.3 is an '04 I think and my starter is a 2000 LS1.

 

Fbody, GTO, similar length and solenoid size


Fbody, GTO, solenoid is clocked differently


Fbody, GTO, snout height is different. Both appear to cover the Fbody T56 flywheel the same


Fbody, GTO, bolt comparison


Fbody starter on my 5.3. No block interference


Fbody starter MAC mids clearance



GTO starter on my 5.3. Again, no interference



GTO starter MAC mids contact. Header flange isnt flush to the head with this starter


Ready to go!

 

Well I found out today that my 5.3 starter didn't work with the mn12 bellhousing. Has anyone else had this issue? I guess i'll buy the ls2 starter

 

'04 GTO starter was made by Mitsu did not bolt up to my LS6 w/T56 Bellhousing.

The 6.0 truck starter is a half inch shorter than the Delco f-body starter. But I think there are two different 6.0 truck starters. My shorter one came from an Escalade.

The bolts holding the housing together on some of the f-body replacement starters are longer than the OEM. One I got from Rockauto was that way. The Autozone was exactly the same length.

I went through all this crap trying to find a starter that cleared my Sanderson shorties I had to use in an LSX swap into a Miata. Ended up using the 6.0 Escalade starter.

Frank

 

good thread I had no idea the starters had any difference between setups/years!

 

ok i have a 6.0l truck block. stock manifolds turned around, th400 trans and a tci flex plate. what one do i need

 

interesting. looks like the Fbody starter's the best choice if you're running exhaust that's tight to the block.