Topic: head id

[Joker (§ir£Ðragon)]

I think he's confusing the M 4 on the right hand exhaust port as part of the ID code.

[kjkjkcjkcj]

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

[Joker (§ir£Ðragon)]

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.

[kjkjkcjkcj]

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. :/

[1981turbotransam]

so where do i need to look for a 4 at on the exaust ports or what?

[kjkjkcjkcj]

it will be on the center ports

[Joker (§ir£Ðragon)]

so where do i need to look for a 4 at on the exaust ports or what?

Where the picture shows the secondary stamping.

[kjkjkcjkcj]

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.