i have a 1991 gmc sierra k1500 and i was wondering what transmission is in it and will it work with a 454

Asked by Mar 22, 2016 at 11:23 AM about the 1991 GMC Sierra 1500 K1500 SLE 4WD Standard Cab SB

Question type: Maintenance & Repair

1 Answer


Its most likely a 3spd Auto if its not a manual trans. If the engine set up is for a V8 already, yes the tranny can handle the 454 (Say there is a 350 already in it). If its a V6 which is pretty rare in that year, there will be some modification that will need to be done in order to slap in a bigger engine. Best of luck!

1 of 1 people found this helpful.

Your Answer

GMC Sierra 1500 Experts

  • #1
  • #2
    John Saffrahn
  • #3
    Glenn Clingenpeel
View All

Related Models For Sale

Used Ford F-150
2,488 Great Deals out of 220,740 listings starting at $1,222
Used GMC Yukon
369 Great Deals out of 18,592 listings starting at $1,800
Used Chevrolet Camaro
245 Great Deals out of 30,155 listings starting at $4,980

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
20 Great Deals out of 30,034 listings starting at $22,990
2017 GMC Sierra 1500 For Sale
69 Great Deals out of 5,313 listings starting at $19,900
2016 GMC Sierra 1500 For Sale
87 Great Deals out of 3,111 listings starting at $13,900
2015 GMC Sierra 1500 For Sale
139 Great Deals out of 5,172 listings starting at $13,500
2014 GMC Sierra 1500 For Sale
153 Great Deals out of 3,730 listings starting at $9,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.