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Starter hitting boss on L33 block. (Using transaxle adapter plate)
Hey guys. Hoping you can help. I am using an adapter plate to mate a G96 transaxle to an L33 block.
Everything was going off without a hitch, except trying to install a stock starter (For the 06 silverado that the block is from) has failed miserable. May be hard to visualize but below is a picture of the adapter late, engine side. You can see the cutout for the starter nose.
Below that is a picture of an L33 block (Taken from this site, not my own). I have circled the boss that is making this impossible. What is the purpose of that boss? I have yanked both engine mounts and suspended the engine hoping for more room, but looks like it won't squeeze by the outer edge of the adapter, and that boss. Also don't think I have room to surgically remove that boss, either. (Maybe I could shave some with a sawzall but unknown how much space I actually need)
I just watched a youtube video of a starter replacement (on a stock Silverado). Doesn't look like that boss is used for anything in the OE application either?
Thanks man, I had read over every starter thread I could find before posting this. I shaved that boss off (does anyone know what it's for? I can't find it being used in any photo/youtube video). Starter now goes in, but the nosecone hits the back of the adapter plate. Sooo, looks like an aftermarket without the nosecone is my only option at this point! (I suppose an LS3 may fit if the nose cone was shorter, but I can't seem to find any proof of that.)
Thanks man, I had read over every starter thread I could find before posting this. I shaved that boss off (does anyone know what it's for? I can't find it being used in any photo/youtube video). Starter now goes in, but the nosecone hits the back of the adapter plate. Sooo, looks like an aftermarket without the nosecone is my only option at this point! (I suppose an LS3 may fit if the nose cone was shorter, but I can't seem to find any proof of that.)
Hey man I finished my 2000 911 996 6 speed swap a little while back and ran into the issue of the adapter plate, not the mounting boss. I used a stock iron 2000 4.8 and had no issues with that boss. Wherever you got your adapter plate from should have mentioned that the LS3 starter and a truck starter are actually a little different and that an LS3 starter is to be used. That nosecone in question is actually ever so slightly shorter on the LS3 starter. I actually did a video on it where I tried to modify a truck starter for laughs. If you're curious you can check it out here
It's a little annoying because all they had to do was machine that adapter starter indent a TINY bit deeper and any starter could've been used. Good luck.
Thanks man! That's the kind of info I was hoping for. Yes, I was just informed about the Ls3 starter by the seller (I assume the same one?) a couple days ago,but I had already bought the truck starter a month ago.
I just sent the truck starter back and bought a Powermaster starter, as I still assumed the LS3 starter was no different.
I agree with you about the milling. Hell, had I known, I would have hollowd it out myself another 1/8"!
Do you foresee any issues with the Powermaster style of starter (No nose cone). I don't like the idea of aftermarket very much, and am concerned about alignment and longevity, but, it's already on it's way and isn't that much more expensive I suppose.
Thanks man! That's the kind of info I was hoping for. Yes, I was just informed about the Ls3 starter by the seller (I assume the same one?) a couple days ago,but I had already bought the truck starter a month ago.
I just sent the truck starter back and bought a Powermaster starter, as I still assumed the LS3 starter was no different.
I agree with you about the milling. Hell, had I known, I would have hollowd it out myself another 1/8"!
Do you foresee any issues with the Powermaster style of starter (No nose cone). I don't like the idea of aftermarket very much, and am concerned about alignment and longevity, but, it's already on it's way and isn't that much more expensive I suppose.
Thanks for the reply!
I had 2 or 3 truck starters laying around from swaps or just extra parts so I figured I'd give it a try. I agree if I knew ahead of time I would have put that cutout deeper so I could just use a cheap and plentiful truck starter. I actually just had to replace my starter as the first one died after 7 months, I think it was from excessive heat from the downpipe though. The new one went in without issue and I heat wrapped everything now so I hope that fixes the problem. If you have exhaust near the starter definitely wrap it or protect it.
I don't know much about the Powermaster starter I'm guessing it's like one of those mini starters. I'd assume they will work fine but I've never used one so I cant say much about them. Alignment was something I was worried about since other adapters I've used in the past didn't work that well and began eating up teeth on the flywheels and as you know how much this setup costs that was the last thing I wanted but so far engagement has been really good so I have no complaints in that department. I'm guessing you'll be ok but definitely let us know when you get it in I like to have other options open. Good luck!
That "boss" is one of the index holes to line the block up on various machine processes at the factory and some re-builders cnc equipment I believe. . .
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Starter hitting boss on L33 block. (Using transaxle adapter plate) 
