Don't you love those problems that come out of now where??!

440 running great in donor car.
BUILT 440 running great in 84 crew cab dualie.

Built 440 was a temp install in dualie so it was time to take it out. Yank.

Donor car engine... Yank.

Install great running engine from donor car into truck.

Now, when I fire it up - it back fires out the exhaust! Sounds like a popcorn machine! Why couldn't it be a simple, no hassle, no problem swap!!

Yes, 1-8-4-3-6-5-7-2; checked it 207 times!

ANYONE - ANY ideas????

68 Roadrunner, 383,4-spd 71 Superbee, Citron Yella, 383,slapstick 71 Charger 500, Autumn Bronze, 383,4-spd, A/C 72 Imperial, 2-dr hdtp 74 Charger SE, 440-auto, sunroof 84 Crew Cab Dually, 440-auto 01 Quad Cab Dually, HO Cummins;6-spd 08 H-D, Softail Custom 08 Challenger, 6.1 Hemi