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The only Ford small block that use an additional balancer behind the balancer is the high performance 289.
Jason Kendrick
1970 F100 Custom 390/C6
1978 F150 Ranger Lariat Supercab 460/C6
If I'm not mistaken, ALL ford small blocks are externally balanced and use "extra" weights behind the balancer AND on the flywheel/flexplate to balance the engine. Somewhere in the mid 80's, the 5.0 went from a 20 oz weight to the now heavier 50 oz weight.
Krosati
Visit my homepage at ClubFTE
[link:www.clubfte.com/users/krosati/|My Homepage]
If you mean an offset weight balancer, all small blocks do. If you mean a counterweight seperate from the balancer, then only the high performance 289 does. Clarify your questions, and you'll get the correct answer much quicker.
Jason Kendrick
1970 F100 Custom 390/C6
1978 F150 Ranger Lariat Supercab 460/C6