Powertrain in 1991 buick regal gs
 

I own a 1991 buick regal gs with the 3.8 in it. I was wondering if it has the same series engine and transmission as my 89 bonneville. Did buick use the vin c in 91. I can't check it right now because my wife has the car in Ohio.

Re: Powertrain in 1991 buick regal gs
 

I'm not 100% sure about the 89 Bonneville being a Vin "C" but the Buicks did use the Vin C in 91.

yes, my 89 bonnie has the vin c. i was just wondering if the buick did too. will make t.s. a lot easier having a spare for everything.

according to my info, in 91 the regal had the 3.8 vin L (l27 tuned port injection 3800)

so no it is not the same engine that is in your bonneville.

I believe you are correct...

The Vin will be the dead giveaway... The 8th didget should be an L for the L27 ( Tuned Port Injection 3800 )

The Vin C used in the 88-91 Bonnevilles were almost the same engine as the Tuned Port Injection 3800, with the one exception being that the Tuned Port had better breathing ability ;)

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