Engine swap???

[whipple3]

does anybody know if GS 500 or 550 motor will fit easily into a 1977 gs 400 frame?

Thank you,
Billy

[chef1366]

The 550s are four cylinder and the 400 is two. Anything is possible but a direct swap? I'd say no.

[Calvin Blackmore]

possibly useful

http://www.eurospares.com/gsfaq.htm

[BassCliff]

Greetings and Salutations!!

Hi Mr. whipple3,

If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", the Carb Rebuild Series, and the Stator Papers. Now let me roll out the welcome mat for you...

Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

Thanks for joining us. Keep us informed.

Thank you for your indulgence,

BassCliff

[SqDancerLynn1]

From what I know the later 500 twins the exhaust spacing is different, pipes wants to occupy the same space as your down tubes