how does this help?

Doug McCue · 08-11-2018, 09:35 PM

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

delete.....

Herbie Null · 08-12-2018, 10:13 AM

Quote:

Originally Posted by Doug McCue

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

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

Quote:

Originally Posted by Pedigo Perf

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.

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.

08-11-2018, 09:35 PM	#1
Doug McCue Member Join Date: Jun 2007 Posts: 232 Likes: 7 Liked 13 Times in 2 Posts	how does this help? Chev 402 375 separated iron Vs. aluminum heads 1970 Chev 454 450 separated iron Vs. aluminum heads 1970

08-12-2018, 10:06 AM	#2
Herbie Null Member Join Date: Aug 2008 Location: greencastle pa Posts: 215 Likes: 86 Liked 439 Times in 69 Posts	Re: how does this help? delete..... Last edited by Herbie Null; 08-12-2018 at 01:43 PM.

08-12-2018, 10:42 AM	#4
Pedigo Perf Member Join Date: Feb 2008 Location: Wichita Ks Posts: 383 Likes: 70 Liked 30 Times in 17 Posts	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.