I'm looking at two '993' heads, 2.02/160. They both have 3 accessory holes on one end a single hole on the opposite end. The exhaust ports are pointing the same direction as well (not oriented as if mounted on the engine) My question is, is there really a right and left head? and does it matter that both of these heads are absolutely identical? Will they work on my engine?
All joking aside,like has been said,they will match the same,whichever side you use. On a typical SBC the alternator sits on the r/t side,the PS on the the l/t side.You will more than likely just use the one lower corner hole for your alternators lowest mounting point on the head.The top bracket will attach to the top of the intake.
You PS resouiver will use two to three bolts,depending on what bracket you have,and will bolt to to the l/t head,and possibly wrap around with a seperate attachment bracket to the exhaust manifold on #1 forward most bolt.
But now the question remains,do you have the correct valve covers????
i know this, but maybe you didn't read my 1st post so i'll state this again. if you put the driver side head on the passenger side of the car the acc. holes will be towards the fire wall...duh
jesse01... NO...! The heads are the same either way... Having the single hole on the passenger head is correct... You do not need 3 mount holes in the passenger head and they were not made that way either... (possibly some of the later Vortec heads had 3 holes per end...?) Not sure on that but seem to remember they do...?
Fellas, it's two different generations of people and manufacturing getting the wires crossed.
Jesse's right, sorta and ya'll are too, sorta.
A whole heap of later model engines had only one end of the heads tapped and only one hole on the passenger side for the alternator, not all but a bunch.
Older, as in before the late 80's or so, it didn't matter 'cause both ends were tapped with the same pattern or just weren't tapped at all.
All of the heads will bolt on to either side and the engine will run just fine, it could care less about left or right. BUT, some later model heads will leave you wondering how to put pulleys and belts between the engine and transmission if you don't put them back on the correct side.
Larry... I`ll just say thanks... But I think what also your refering to are the LT iron engines which are different... But as for the reg SBC heads (most definatly the 993`s from the 1st post) its does not matter on them... The LT type blocks are different as well as the heads (reverse cooling) and thats with either the iron or alum heads, basicly a whole different animal and they are what came in the Caprice & Roadmaster and also Caddy`s after a certain year...
HOLY COW!!! I went away for a couple days and this topic exploded!!!. Thanks for all the info on this relatively insignificant topic. I thought maybe I missed something in Chevy 101. Glad to be on this list.
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