ok i really need everybody to help me out on this problem please

i have 1980 vett
i am putting a 1986 vett engine without fuel injection in this car ran the numbers on block is corvette engine even has (corvette) stamped on the oil pan rail

went to auto zone and bought a horrmonic ballancer for this 1986 vett motor.(engine was in a 88 chevy truck so had to buy vett ballancer and throw away truck ballancer)

this is the new ballance i got from autozone (DORMAN 594-012)
Harmonic Balancer, Harmonic Balancers


Item Number Description

--------------------------------------------------------------------------------

594-012
1995-69 5.0L (305), 5.4L (327), 5.7L (350) Chevrolet, GMC Truck, Oldsmobile, Pontiac.
Detailed Applications




Type: Solid
Diameter: 6-3/4"
Width: 2-3/8"
Weight (lbs.): 8.36

Make & OE#: GM 12551537
Brand: Dorman - OE Solutions

Application Notes:
Exc. Special Hi-Perf


i also ordered this crank pulley from willcox and it is on the way as i right this
Crankshaft Pulley. Double - 350 - 6 5/8 Inch 62-80 $49.67


Part Number: 385853C-30869
Part Year: 1962-1980



Click to enlarge



Crankshaft Pulley. Double - 350 - 6 5/8 Inch 30869 "533" Pulley.


this new ballancer is very small,the reason i bought all this my belts where not lining up so i thought it was the ballancer now i think it might just be the crank shaft pulley that was on the truck (3-groove truck pulley) im at my witts end on this problem.

what do you guys think of this small ballancer on my engine?

any advice and help would be very much appriciated.