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BigSix302 · 11-27-2008, 12:51 AM

If it is the stock/original engine in it , then it will most likely be a 228 c.i. GMC engine. There is a flat area down behind the distributor that will have a stamped number . If the number starts with a 22, then it will be a 228. Like wise a 248 will be 24, a 270 wil be 27. This only applies to the GMC engines, if it was changed to a Chevrolet engine the number sequence will be much different. A picture would really help, or several pictures will give a general description. You will then need to go to some numbers or casting marks on the block to really nail it down. Hopefully the previous owner was able to keep the GMC engine in this truck. They are very good engines!! Keep us posted and we'll see what you can come up with. RIck W.

p.s. here is a link to my GMC Burb. It has some pictures of the original 228 engine in there. It may help you some.

11-27-2008, 12:51 AM	#4
BigSix302 Registered User Join Date: Aug 2004 Location: Kansas City, Missouri Posts: 65	Re: What engine might i have? If it is the stock/original engine in it , then it will most likely be a 228 c.i. GMC engine. There is a flat area down behind the distributor that will have a stamped number . If the number starts with a 22, then it will be a 228. Like wise a 248 will be 24, a 270 wil be 27. This only applies to the GMC engines, if it was changed to a Chevrolet engine the number sequence will be much different. A picture would really help, or several pictures will give a general description. You will then need to go to some numbers or casting marks on the block to really nail it down. Hopefully the previous owner was able to keep the GMC engine in this truck. They are very good engines!! Keep us posted and we'll see what you can come up with. RIck W. p.s. here is a link to my GMC Burb. It has some pictures of the original 228 engine in there. It may help you some. __________________ AD's Rule!! 53 GMC Suburban--48 GMC 1/2 Ton project--49 Chevy Pick-up--52 Chevy Pick-up (my driver) Last edited by BigSix302; 11-27-2008 at 12:52 AM.