Yes, the engine compartment is big enough for it, and depending on which transmission you have you should have no problem with it.
Yes I have a 1990 with a 454 from the factory...
no
Yes it will, I own a 1990 GMC Suburban 2500 (3/4 ton) and it came from the factory with a 454 motor.
mounts for 454,poss flywheel,computer for 454
try www.haynes.com
7.9 to 1
set er on and find out lol
454 v8
4 degrees BTDC ON A 1990 1/2 Ton Truck With The SS-454 With A Throttle Body.
green
Screwed into the engine block under the distributor.
not very good my 89 k3500 with the 454 gets 11