I was told, read, or dreamed about only needing to bore the cyl and buy new pistons/rings for my 07 street glide 96TC to be the 103", is this correct?

sj

 

You are correct.

 

Screamin' Eagle® Big Bore Stage I Kit for EFI Models - 103ci

This Big Bore Kit lets you increase the displacement of your Twin Cam 96-equipped model from 96 cubic inches (1584cc) to 103 cubic inches (1690cc). Includes Big Bore cylinders, Big Bore flat top pistons, rings, clips, and a Stage I Air Cleaner Kit with one-piece backplate, integral breathers, all mounting hardware, and gaskets. A high performance clutch spring is included to provide the additional clutch capacity required by the extra power. Requires separate purchase of primary cover gasket. This kit is street legal when used with stock mufflers. (Not all components shown.) All EFI-equipped models require ECM calibration (priced separately). Regulatory approvals pending for '08 Dyna® and Softail® models.

 

Or you can go bigger by just boring your cylinders and buying new pistons/rings/gaskets.....why stop at 103?

LOL

Steve

 

I don't believe you can go much further with the stock cylinders and when you get close to 4" bore the cases need to be bored.

 

You can not go any bigger then 103 without spliting the cases and getting them bored out, the largest you can go with the stock barrells is 3 7/8 bore , safely, BUt yes technically all you need is the 103 pistons and bore your stock 3 5/8 barrells to 3 7/8 and your done.

 

Cool beans! I also found where I read it, it is sept 07 issue of American Iron Mag, page 48. This gives the bore, stroke and comp of the HD & S&S motors........

If I swap cyl it says I can go to 133" if I'm reading it right (with all the stuff associated with new cyls)..............

hmmm good info to know.

 

You can go as big as 107"(click this) without boring the cases. The GMR package is a big hit on other forums.

 

I got 1100 miles on my GMR 107 kit and it rocks. Steve is great to work with and his service and knowledge is next to none.
Dont know the numbers as no dyno yet but it is a definate improvement over stock. No pinging and a whoopload of torque. There are options other than the 103.

mike

 

That 107 does sound like a nice option but again with it you have to get your heads cut as well rising the cost a bit more. the stock heads do not have a large enough fire ring in them to support the larger bores and that is why on the 110 kit you also get new heads as they have the lagre diameter bowl on the head. I was loooking into options when i got my 95" stuff i was tring to look at doing a 100" but it would have meant the cases for me as well and i didn't want to get into it that far.