Difference between W and X Vin 4.3 Liter

Same as the HO unless it has been altered.

Look at the numbers. The upper set are for the HO cam, notice the total lift is higher, it also is a bit longer duration than the non HO. That difference and the computer programming to match it is the difference in the engines. If you want the extra HP you have to do more than swap computers or PROMS. For 5 HP it isn't worth the effort. A good tune up will give you a bigger improvement. Now IF you were getting 20-30 HP it becomes a marginally better upgrade BUT only if the engine is coming apart for work anyway.

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sensors

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Seems as if we have a smartass in here. Very well, everyone is entitled to their opinion. The only reason I ask all these questions is because I'm not that well educated in this area, I know enough to get by, but I like to ask questions. I just had people at the dealership telling me one thing, and then I heard totally opposite from you gentlemen. Though I should have listened to you in the first place because my dealer has been wrong in the past, but I must say I have learned quite a bit from everyone in here, and I thank you. I took auto service classes in college and high school, but nothing extensive. My main love is computer science and programming. Thanks again for all the info. By the way, from what I noticed, this Chevy forum has dodge, and ford beat by a long shot, way more users on this.

Can't swap ECU from one truck to another without getting it reflashed with the VIN that matches your BCM. It's the passlock security BS

I'd sure hate t be married to someone who wants to argue about lobes and duration lol. Some people would argue the shade of black.

Both the x and w motors are vortec motors in 97. I have both of them

I have a w vortex in my 98 blazer s10....says blazer on the truck and says s10 on the title and vins match

I ran into this yesterday. And have laughed like hell reading these comments. 4.3L VIN X CPI is real.

Actually that's not entirely true, I have a 98 W vin and it's 4x2

Well Steve W. I have a vin x with a long air tube going to the middle of the motor, bu t the cover says votec now I really don't know what I have.I just bought th is 1997 s10 less than 2 months ago. 160000 miles it will fly. The owner's m anual doesn't give you very much information on the motors, like bore, stro ke, so on. I do have to ease down the gas to keep from barking the tires wh en I take off from a stop. Charles A.

If you go on any website and order a timing set, one engine has a balance s haft and one does not. Im not sure which is which, but maybe that is the di fference. I have a 97 4x2 with the vortec and a 5speed manual and my vin is xx. It has the crappy spider injectors.