If you backfired through the carb, you have most likely blown your power valve- unless you have done the update. Pull the bowl, remove the power valve and check it out. Then check the routing of your plug wires. If they all go to the correct holes in the proper order, check the timing. Hopefully on of those issues and not a flat cam.
Two 14" 5 lug S5 wheels with ST205/75R14 Kenda Loadstar radials $349
Two 14" 5 lug S5 wheels with ST215/75R14 Kenda Loadstar radials $389
Two 15" 5 lug S5 wheels with ST205/75R15 Kenda Loadstar radials $409
Mounted, balanced and delivered.
PM or email me for tire, wheel or package pricing.
CARBURETOR REBUILDING - $199
Parts, labor and return shipping included
2 LED 6" BRAKE LIGHTS DELIVERED $32