1989 R3500 blown head gasket and cracked head

[80SPORT]

The 383 crate motor would make a nice upgrade and all your external components would work.

The 383 is a vortec so you would need to change your intake;the ht383e is set up for for a 96+ truck but it would work if you used the intake from a 96+ vortec unit.
You could also change up to the overdrive trans as used in the 1991 trucks.

I had a 91 dually crew with the 454 efi/overdrive trans ...never should have sold it.

[SCOTI]

Originally Posted by 80SPORT

The 383 crate motor would make a nice upgrade and all your external components would work.

The 383 is a vortec so you would need to change your intake;the ht383e is set up for for a 96+ truck but it would work if you used the intake from a 96+ vortec unit.
You could also change up to the overdrive trans as used in the 1991 trucks.

I had a 91 dually crew with the 454 efi/overdrive trans ...never should have sold it.

EFI as in TBI or ??