Horsepower rating stock 350??

[70cst]

Originally Posted by 67_C-30

The deck height is NOT different on SBC's between trucks and cars.


To answer your question 70cst, the difference is heads and compression ratio. The car 4bbl 350's had double hump (492, 186, etc) or 041 heads with 64 cc chambers and had a compression ratio of 10.25 :1. The 4bbl truck engines came with 76cc heads like 993's, 487's and beginning in '70 882's. They produced 9:1 CR for use with the lowest grade fuels. Some "truck" spec books list the 300HP 350 as an option but it misleading because they also El Caminos. The high CR 300HP 350 was never installed in pickup truck. After 1970, no 10.25:1 CR engines were offered in cars either, so the above info only applies to 69 - 70.

Thanks 67_C-30 ...