The Buick 455
YEAR MODEL SPARK PLUGS DISTRIBUTOR IGN.
TIMINGcomp.,
crankVALVES FUEL
PUMP
PRESS.IDLE
SPEEDType Gap Dwell Gap Tappet
Clearance, hotintake
opens, (deg)intake exhaust 1970 V8-455 2bbl.
(310hp)R45S .030 30° .016 6BTD 180 zero zero 20B 5-8 850 V8-455 4bbl.
(365hp)R44S .030 30° .016 8BTD 180 zero zero 20B 5-8 850 V8-455 4bbl.
(390hp)R44S .030 30° .016 10BTD 180 zero zero 20B 5-8 850