Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Modify an old 60s Cadillac for 4 or 6 cyl?

fud2468 · 09-30-2008, 10:05 PM

My old Kelley Blue Book only goes back to 1973 and the 1973 Cad models averaged about 5000 lb. then.The 1976 Century 4D is given as 4017 lb., quite a difference.
The 1965-67 Cad had a 429 engine with 10.5 C.R., '68-'69 had a 472 with 10.0, and the 500 engine became an option in 1970.
C.R.on both the 472 and the 500 was dropped to 8.5 in 1971.
Hot Rod mag did a junk yard Cad engine project a few years ago and IIRC, raised the 500 C.R. to about 12.5 by putting 472 heads on it. That might give good FE with propane and an OD transmission.
Ray Mac.

09-30-2008, 10:05 PM	#16 (permalink)
fud2468 EcoModding Lurker Join Date: Aug 2008 Location: Northern California Posts: 69 Thanks: 18 Thanked 3 Times in 3 Posts	My old Kelley Blue Book only goes back to 1973 and the 1973 Cad models averaged about 5000 lb. then.The 1976 Century 4D is given as 4017 lb., quite a difference. The 1965-67 Cad had a 429 engine with 10.5 C.R., '68-'69 had a 472 with 10.0, and the 500 engine became an option in 1970. C.R.on both the 472 and the 500 was dropped to 8.5 in 1971. Hot Rod mag did a junk yard Cad engine project a few years ago and IIRC, raised the 500 C.R. to about 12.5 by putting 472 heads on it. That might give good FE with propane and an OD transmission. Ray Mac.