I was wondering if a motor from a 95 bonneville series 2 is the same as a year 2000 series 2 motor? were there any changes made in those 5 years? just want to know out of curisoty.

what was changed when the went to series 3?

its not all that different, but they did get a new throttle body in 98, new heads in 98, etc...

the s3 L67 has a new LIM, SC, TB, etc...

In 2000, the L36 got an updated UIM that increased it'* lifespan to around 100-150k miles. Basically, from what I've heard, it strengthened the EGR outlet, but it still melts. I don't think we've seen as many failures as the 95-99 L36 but I might be wrong...

The throttle bodies changed 2-3 times from 95-2000. The 95 S2 L67 uses a M62 while 96-2000 use an M90 (earlier version M90s use different vaccum routing.) Among all kinds of other things changes.


The S3 L32 (supercharged) got a new SC, TB(with drive by wire system), LIM, smaller fuel injectors (with returnless fuel system) & hot forged powdered coated connecting rods which are stronger then L67 rods.


Ed

the throttle body change was in 99 the 98 is still whit the post

They changed the tb plate from brass to aluminum on L36 in 98 I think... I could be wrong
also, L36 tb'* after 1996 do not have the secondary vacc port because the tranny'* after 96 are not vacc controlled the are electric.

my 98 TB has the brass plate but the 00 TB i got has the funny looking aluminium one

Heads, cam and intake remained the same?

The S3 supercharged 3800 is an L32 not an L67