Nice work bro, seems to me that kinda settles it. Sucks if he was lied to and got the 4.8. But in any case they are the same block right? I'd just bore that bitch out or swap in a LQ9 like the rest of the boys said. And while your at it WCCH------> does sell heads, they do more than just porting them out.
Also...I'm wondering if I brought your truck over...last year I was sailing on a RoRo(car carrier) and we brought a bunch of GM's over to the middle east, dubai and Kuwait. I know they build them a little differently like TurboGibbs said because of emissions restrictions and I hope for your sake they threw in the 5.3.

TURBOGIBBS...shouldn't there be a stamp on the block itself indicating what the Displacement is? I know mine had 6.0L stamped on one of the end of the block.

 

That is because the 6.0 is a different block. As far as I know the 4.8/5.3 is exactly the same block

 

Unless someone swapped a 5.3 in thre and it was used,the 8th digit being V is a 4.8

 

The 4.8/5.3 blocks have "4.8/5.3" cast into them where the 6.0's have "6.0" cast in. The only difference in the 4.8 and 5.3 so to speak is the stroke on the crank but as a result the rods and pistons are different as well.

 

What the guys at the dealership say is meaningless, it's only the order guide that matters.

A salesman at my dealership said that GM didn't have a 1500 smallblock truck engine larger than 6.0L and told me to do my research before walking into the dealership and making requests. Apparently he 'knew' GM's model lines inside and out and was an expert at the matter.

Meanwhile a GMT900 Denali was sitting outside.

 

Didn't know that, thanks for the clear up!

 

ohhhh since all of u r saying its 4.8 i did believe now its a 4 .8 and i do believe that im gonna kick some a>> in the agency of the gmc in dubai .

thats really sad , my experience in american is bad but however thanks guys i did learn alot from all of u . espiacally turbogibs .

and thanks again .

 

Hope it all works out bro, I don't know what the deal is over there but hopefully you can get your money back! And if not this would be a perfect opportunity to get yourself a 6.0L swap in there...hell might as well make it a 7.0L!!!

 

hmmm spoolin im having an appointment with them and ill return my car to them . and get the new 5.3 2007 model . guys i can pay more in the gm cuz they have motorsport performance garage and they fit superchargers and even engines like 6.0 .


but i want a 5.3 cuz thier is a guy who has a modified 5.3 and he is so proud i guess i want to take him down . ohh ya his block is stock but he has modified cylinder heads with cam and tuned by diablo chip . i really want to kick his *** so hard .

 

must be nice to buy a truck with the sole intention to be to kick one guy's ***...!!! I'd go for the 6.0L option if they offer it.