LS7 Head Info Needed

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Pantera · #12 12-13-2004, 07:03 PM

This is what Mor-tec says about the usage of these heads

3946074 69&71 rect OPEN 'Aluminum, ''69 427 L88, ZL1, 118cc chamber & '71 454 LS6, "round exhaust port"

3994026 71 rect OPEN '454 LS6, 118cc chamber

6272990 70-up rect OPEN 454 service replacement, used on some MKIV crate engines, 118cc chamber

I just went out and looked at some heads that I have and after quite a while looking I think I see what you are refering to on the hump. I only have HP heads # 840 # 990 #208 here at the house and they all have the hump. It is about the size of the end of your finger?

I learn something everyday on here. I never noticed these before. I have no oval port heads to compare to.

If someone has a low HP motor check and see if this is different on your heads to see if this is correct?

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