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2blu442 · 07-23-2007, 10:11 PM

Personal preference, the 425 was never put in the Cutlass/442 line but only used in full sized cars. They do have a forged steel crank which is stronger than cast iron, and a shorter stroke than the 455. Bolt on parts will interchange, like heads, intake and exhaust manifolds, but internal parts such as lifters and pistons are harder to find for the 425. The 455 was made for more years and is a newer engine. I like them both, and if you find a good deal on one or the other I would take it. That's my 2 cents worth.

07-23-2007, 10:11 PM	#5 (permalink)
2blu442 Senior Member Join Date: Sep 2006 Location: Medford, Oregon Posts: 865	Personal preference, the 425 was never put in the Cutlass/442 line but only used in full sized cars. They do have a forged steel crank which is stronger than cast iron, and a shorter stroke than the 455. Bolt on parts will interchange, like heads, intake and exhaust manifolds, but internal parts such as lifters and pistons are harder to find for the 425. The 455 was made for more years and is a newer engine. I like them both, and if you find a good deal on one or the other I would take it. That's my 2 cents worth. __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!