454 head Identification

54inches

Outside of pulling the valve covers....I know I'm lazy....actually I am about to pull them this weekend...

What is the best guess on whether I have open or closed port heads on my Suburban....

I think I remember the exhaust ports being square as opposed to being round......


Just wondering?

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2003 Ford Ranger 4 cyl 122 rwhp, lol
2005 CTSV 390 RWHP RIP
2005 CTSV TT 700 RWHP

Count your blessings.

4x4Freak

I'm not sure if the BBs are the same, but the SBs have a marking cast into the end of the head. Like a triangle or two humps, etc. Most likely you just have the plain low perf. peanut port heads if it's a truck engine.

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Zach


Reality is an illusion caused by the absence of alcohol.

75 IH Scout II
79 Chevy K10
80 GMC K25
97 Chevy S10
05 Dodge 3500

Collect the whole set.

54inches

OK the only info I can find out about these heads is the following from Moretec.


Casting # 14081045

78-87 truck oval(round) port ~ open chamber

I know these are non~HP as well as non~peanut heads

Does anyone have a book or an online source other than Mortec?