Multi-Spark
Does not fit TH350C lockup (use part# 30235 for TH350C)
Long Block
Recommended for naturally-aspirated competition use
Acceleration capabilities are greatly enhanced
G Force Transmission Crossmember 1973-1987 GM C10 H778001M Multi-SparkG Force GM C10 C1500 Pickup Truck Transmission Crossmember, Double Hump for Dual Exhaust C10 Pickup Truck, Transmission Crossmember for 1973 1987 trucks using a TH350,Muncie,T 10,Saginaw,Super T 10,Powerglide,700R4, 4L60,4L60E, Tremec TKO 500 600, T 56, Magnum, T 5, TH400, 2004R,4L80, 4L80E, or any . G Force Performance is the premiere source for transmission crossmembers. Whether you're looking for an upgrade from stock components or parts for a