Was just in a site that showed D1's 94-98 w/ 3.9. Then it shows D2's 98-04 w/ 4.0. What gives?

 

What site was that? If you're wondering what you have, pop the hood and look at the intake.

 

 

I was under the assumption I have a 98 D1 with a 4.0... Two things I'm sure of, it's a 98 and it has a 4.0...

 

just bad info perhaps.
98 = d1 fo sho
no d2 till 1/2 way through 99

 

Ignoring diesels..

89 ROW D1 used 3.5 SU V8
90-93 ROW D1 used 3.5 14CUX V8
94-95 NAS/ROW D1 used 3.9 14CUX V8
96-99 NAS D1 used 4.0 GEMS V8
98-04 ROW D2 used 4.0 Thor V8
99-02 NAS D2 used 4.0 Thor V8
03-04 NAS D2 used 4.6 Thor V8

 

I have a 97 v8i that says 4.0 on the intake... per the RAVE the v8i is 3.9

In one of the threads on here someone said the displacement, bore, and stroke are all the same its just a marketing gimmick ...

I just find it entertaining that my 6cl chevy blazer had a 4.3 in it... we get 2 extra cyl's but less displacement

 

My D1 is '97 w/4.0L, not 3.9L. I'm sure b/c I just checked under the hood now to complete my Ultra-Gauge reward form to get my $9 rebate . The Ultra-Gauge reward form's drop-down menu prompted me to select "3.9" for a 1997, but it's a 4.0, so...I selected "Other" and typed in 4.0.

Maybe website/document authors mix-up engine size in vehicles close to the Discovery series (generation) cross-over? I own a 3rd generation Firebird and often notice mistakes when authors compare the 4 generations of F'birds, especially in cross-over years. Sometimes only owners recognize the subtle distinctions, although engine size is kind of important... .