427 Starter - 2 hole or 3 hole nose cone??
 

Spent 2 hours searching forums, Colvins book, NCRS TIMJG, ebay and Im still confused on which starter nose cone is correct.

I currently have the "wrong" starter number with a 2 hole cast iron nose cone installed and starting the car just fine. I want to purchase the "correct" date coded starter to replace it with. My original 427 block appears to have 3 threaded holes for a starter to bolt on, but all my searching does not say if the 3rd hole is used or not.

Here are 2 pics of starters that should fit a 427 in 1968. Other than the Delco number stamped on the starter case, which nose cone is correct both in appearance for judging and functionality for driving?

thank you,
bigredbrad

https://cimg5.ibsrv.net/gimg/www.cor...629afa3f00.jpg


https://cimg6.ibsrv.net/gimg/www.cor...9d8e560e18.jpg

My l68 has cast iron two hole like your first pic . :thumbs:

I'm pretty sure the three hole starter is a universal starter to be used with two different flywheel sizes.

My 68 L36 has the two hole starter too.

My engine block has a third threaded hole that looks like it would line up with a 3 hole nose cone. Just hate to buy a 3 hole starter to get numbers matching and find out that it is not correct.

bigredbrad

My 69 L36 also has the 3 threaded block holes but the stock starter is the 2 hole offset bolt pattern.

I know that GM used one flywheel that is smaller and it used the two hole starter that had the holes straight across from each other used on 6 cylinder engines . But all of the corvette small block engines that I have seen take the two hole diagonal pattern . Not familiar with the big blocks though .

I just replaced the starter on my 69 427 4-speed with a rebuilt correct one from Zip. There are 3 mounting holes on the engine, but only 2 on the starter, and they are on a diagonal. All works fine now, but it's a hell of a difficult job if you don't have a lift. Also, take photos of the wiring before you take out the original one.