3919840 Popular Q&A

Q: Will factory Mark IV cast#3919840 cyllinder heads work on Gen VI ...
A: They should bolt on and you'll be able to come up with a pushrod/rocker combination that works, but I can't say about the water ports lining up, or the oil drai... Read More »

3919840 Helpful Resources

3919840 Heads | eBay
Find great deals on eBay for 3919840 Heads in Cylinder Heads & Parts. Shop with confidence.

about_cylinder_heads - Acmcao.com
As an example, around May of 1967 GM began using a casting number of 3919840 these heads were continued through June of 1969. There was no difference ...

help decoding bbc heads [Archive] - NastyZ28.com
can any one give me any info on these heads. csting # 3919840. mortec say 3919840....67-69...rect..CLOSED..396, 427, 107cc chamber.

1969 Corvette 427ci 435 hp 3919840 matching heads L71 ...
Nov 1, 2010 ... 1 matching pair of bare 3919840 square port cylinder heads, which were used on 1967, 1968, and 1969 corvettes with the 427 / 435hp engine ...

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