general question.

[Sadden]

i have a 1994 bonneville. i cannot figure out what gen engine it has. some sites say gen 1 some say gen 2 . can anyone tell me for sure what engine i have?

[thunderhand]

S1

[harofreak00]

More info: http://www.pontiacbonnevilleclub.com/fo ... =39&t=1628

[crash93ssei]

1994 is no doubt a Series I

SSEi, which is what your avatar says, would be the L67 supercharged engine.

[willwren]

In more detail:

92 SSEi is the Series 1 L67 with the Gen2 Eaton M62 supercharger, smaller throttle body, and weaker axles.
93 SSEi is the Series 1 L67 with the Gen2 Eaton M62 supercharger, smaller throttle body, and stronger axles.

94 SSEi is the Series 1 L67 with the Gen3 Eaton M62 supercharger, larger throttle body, and stronger axles.
95 SSEi is the Series 1 L67 with the Gen3 Eaton M62 supercharger, larger throttle body, stronger axles, and lighter crank.


My 93 is updated with the 95 'light crank' block and the Gen3 94/95 top end. My 95 came with that from the factory.

[GoldenBullet]

In more detail:

92 SSEi is the Series 1 L67 with the Gen2 Eaton M62 supercharger, smaller throttle body, and weaker axles.
93 SSEi is the Series 1 L67 with the Gen2 Eaton M62 supercharger, smaller throttle body, and stronger axles.

94 SSEi is the Series 1 L67 with the Gen3 Eaton M62 supercharger, larger throttle body, and stronger axles.
95 SSEi is the Series 1 L67 with the Gen3 Eaton M62 supercharger, larger throttle body, stronger axles, and lighter crank.


My 93 is updated with the 95 'light crank' block and the Gen3 94/95 top end. My 95 came with that from the factory.

is the Gen 3 TB fitable on the Gen 2? or does it require the full top swap? (which, iirc, is rather complicated right?)

[willwren]

The Gen2 and Gen3 TB's are not swappable without swapping SC's also, and the only two Gen3 swapped cars here (myself and J Wikoff) still struggle to this day for a proper tune. No, it's not a simple swap by any means.

The inlet of the Gen2 SC and the 3 stud pattern is totally different than the inlet of the Gen3.

Interesting point of comparison, the 94/95 L67 throttle plate is actually a larger diameter than the S2 L67 throttle plate.