Author Topic: head id  (Read 1981 times)

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Offline Joker (告r茺agon)

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Re: head id
« Reply #15 on: April 20, 2009, 11:42:37 AM »
I think he's confusing the M 4 on the right hand exhaust port as part of the ID code.
Larry


Offline kjkjkcjkcj

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Re: head id
« Reply #16 on: April 20, 2009, 12:07:05 PM »
If they are the 4's with stock 400 setup your looking to get around 200 horse power, if they are the 8's with a stock setup you will be getting around 220.  What you do now is all up to you. if your lookin for performance those are great heads for a super charger, or they work nicely with a stroker kit, however you wont get too much power out of them just rebuilding the motor and putting in a more agressive cam and new intake.  It thats the kind of motor you are looking for then you may wanna try and find yourself an older set of heads with a chamber size in the 72 -80 cc range.  However a stroker kit only runs you about 1800 bucks and if your thinkin about rebuilding the motor you will need new pistons and rings and a crank balance prob anyways. so id go with that. Don't do what i do and not plan out your motor before you start.  :) good luck. Think BIG
-1979 Trans Am Ws6, W72 400, holley 650, #62 heads (toy)
-Silverado 1500 (daily driver)



Offline Joker (告r茺agon)

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Re: head id
« Reply #17 on: April 20, 2009, 01:19:27 PM »
If they are the 4's with stock 400 setup your looking to get around 200 horse power, if they are the 8's with a stock setup you will be getting around 220. 

I think you have that reversed. The 4s are the smaller cc head and would give higher a compression ratio. Those are the ones used on the W72s.
Larry


Offline kjkjkcjkcj

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Re: head id
« Reply #18 on: April 20, 2009, 01:24:42 PM »
whoops you are correct. my mistake so yeah with a stock setup, with the 4's you will get 220 and with the 8's you will get around 200. :/
-1979 Trans Am Ws6, W72 400, holley 650, #62 heads (toy)
-Silverado 1500 (daily driver)



Offline 1981turbotransam

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Re: head id
« Reply #19 on: April 20, 2009, 01:57:07 PM »
so where do i need to look for a 4 at on the exaust ports or what?
GREATER LOVE HATH NO MAN THAN TO LAY DOWN HIS LIFE FOR A FRIEND
1980 Indy Pace Car Turbo Trans am 301T
1977 Pontiac Trans Am 400 Auto SE Hardtop
looking to buy a 1980-81 Trans Am

Offline kjkjkcjkcj

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Re: head id
« Reply #20 on: April 20, 2009, 01:59:13 PM »
it will be on the center ports
-1979 Trans Am Ws6, W72 400, holley 650, #62 heads (toy)
-Silverado 1500 (daily driver)



Offline Joker (告r茺agon)

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Re: head id
« Reply #21 on: April 20, 2009, 01:59:44 PM »
so where do i need to look for a 4 at on the exaust ports or what?

Where the picture shows the secondary stamping.
Larry


Offline kjkjkcjkcj

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Re: head id
« Reply #22 on: April 20, 2009, 02:01:14 PM »
haha i think i need to not post anymore for today i keep messing up orders of things. i have officially lost posting privlidges till midnight. im sorry.
-1979 Trans Am Ws6, W72 400, holley 650, #62 heads (toy)
-Silverado 1500 (daily driver)