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Doug McCue

08-11-2018 09:35 PM

how does this help?

Chev 402 375 separated iron Vs. aluminum heads 1970

Chev 454 450 separated iron Vs. aluminum heads 1970

Herbie Null

08-12-2018 10:06 AM

Re: how does this help?

delete.....

Herbie Null

08-12-2018 10:13 AM

Re: how does this help?

Quote:

Originally Posted by Doug McCue (Post 569625)

Chev 402 375 separated iron Vs. aluminum heads 1970

Chev 454 450 separated iron Vs. aluminum heads 1970

In my case it is 60lds off the nose steel head vs aluminum and my combo never came with an aluminum head, but it now has an aftermarket aluminum and steel head.

Pedigo Perf

08-12-2018 10:42 AM

Re: how does this help?

In 1970 Chevy offered the aluminum head as a factory option on the big blocks. This change is consistent with the other years with FACTORY optional aluminum heads.

I don't know how it helps, but I have 200 pounds of lead for sale if you know anyone interested.

Herbie Null

08-12-2018 11:28 AM

Re: how does this help?

Quote:

Originally Posted by Pedigo Perf (Post 569649)

Thanks for the clarification, makes more sense now. Only thing on the plus side of it is that if the aluminum head gets HP the steel head will not. Just looks like they opened up another can of worms with other combos having aluminum and steel heads on the same combo and not being separated.

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