GMC vs Chevy

[highperf4x4]

If you're referring to the pre 96 TBI engines then you just need to bolt your Vortec heads on to that motor and you're good to go.

 

[kennythewelder]

What about the crank shaft sensor and the triger wheel that is not on the pre Vortec engine for just one example. Do you know if the sensor triger is a magnet that is imbeded into the crank at a persist point, or is it a wheel that can be swapped from one crank to another. Have you ever done this swap ? I am just asking. I have not done the swap, but I know that this is one difference in the two blocks.

 

[highperf4x4]

The trigger mounts on the crank inside the timing cover where the timing chain gear is. The sensor plugs into the bottom of the timing cover.

 

[highperf4x4]

You'll see all of that when you take your Vortec apart.

 

[thunderstruck]

The 96 up got a different grill and interior also.

Just want to point out that 94 was when the grilles changed and 95 got the new interior.


Sent from my Nintendo 64

 

[kennythewelder]

I was just asking, I am not taking mine apart. When I do mine I will get a direct replacement Vortec 383 stroker from PMC machine. They have a direct replacement with 370 HP and a 7 year 70000 mile warranty for less than 3000. If you tune it it is good for just over 400 HP , thats my plan in the future.

 

[highperf4x4]

Good deal. Mine is 460hp. Here's a heads up though, if you tune it by increasing the timing and it has 11:1 compression like mine then make SURE you use a large starter and a rear brace. My base timing is 20 degrees and I cracked the outer hole of my starter boss on the block.

 

[kennythewelder]

Thanks for the info, I won't do anything soon, my orignal Vortec srill runs to good for now. With about 208,000 miles on it, and it being my daily driver, I am in no hurry to do a swap. i just k.ow what I want. I have a friend who is running the 383 from PMC and it is a beast for the street. He is still running all the orignal CPI system.