6.5 Non turbo to turbo conversion [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: 6.5 Non turbo to turbo conversion


joeman
11-29-2005, 12:24 AM
Can i use a non turbo94 6.5 van motor in a 92 turbo pickup? will the heads work ?:help:

quantum mechanic
11-29-2005, 12:32 AM
yes, but you'd do better to get a set of '98+ TD heads from a pickup to fit an F intake.

On a side note I made an F intake work on a set of '98 TD van heads but it required a little drilling.

chevydiesel
11-29-2005, 10:00 AM
Yes, the 94-95 model G-van engines that were non turbo have the same heads as the truck style engines do. The heads that are different are found on Turbo Van engines and Hummer engines that were TURBO models.

So, you'll have no trouble getting your intake and exhaust mounted.

What Quantum was referring to was that the regular intake manifold won't mount to van heads, but he's referring to the turbo van heads, which have bolts that thread in straight up, verses slanted with the heads like the truck/blzr/sub heads do...

quantum mechanic
11-29-2005, 11:27 AM
The N/a van heads are the same a N/a truck heads? Glow plug angles?

I suggested '98+ truck heads for the coolant passage size increase, coupled with a '98+ waterpump you should keep the heat down.

chevydiesel
11-29-2005, 02:05 PM
The n/a van heads are exactly like the n/a truck heads.

The only difference between a n/a truck/van head and a turbo head is the pre-cup. The n/a heads have a smaller pre-cup for better fuel economy, where as the turbo precups are for performance. The turbo cups are identified by the "T" on the cup or the Diamong logo on the cup.

I can't confirm nor deny the 98+ heads having larger cooling ports in the heads, but I seriously doubt it. Remember, cooling mods came into play in late 96 but were installed on ALL 97+ engines for trucks.

The glow plug angles are the same on all of the heads.

Now, 6.2 verses 6.5 heads you will see some difference, the main one being the injector angle in the head, but thats really about it.