3927186 Popular Q&A

Q: Original heads were 3927186, now vortec, would this block more li...
A: Factory Forged cranks back then were not what people thought they were. Just like the old rectangle port Big Block heads, which the stock small block Vortec hea... Read More »

Q: How much would u pay for bare 3927186 heads?
A: Like these? I used to collect them, I still have a couple of sets. I wouldn't buy them; but some people will pay alot for them, if they need the right heads for... Read More »

Q: Does any know what heads i have they are GM 3927186?
A: 186s were really good HP heads for their time. They were used (as noted above) on the 302 engines and high performance 350s. Read More »

Q: Can anyone id these head #'s 3991482 3927186 Register now (free) ...
A: I am looking for information on Chevrolet 3991482 angle plug cylinder heads dated D141 (April 14, 1971). I,ve looked on Mortec and many other sources and have c... Read More »

3927186 Helpful Resources

3927186 Cylinder Head Date Code? [Archive] - NastyZ28.com
I have one 3927186 head on my 1970 Z28 with a date code of M 10 4. The other is A 20 0. I thought they only cast these heads in 1970, at least ...

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