tony_cogliandro

iTrader: (3)

This is all 57kids fault. I was looking for heads to put on my 90 305 and 57kid said something about the accessories hooking up. Now I never thought of that, but I should have.
So I think we need a place for anyone to put what heads work with what engines, accessory wise, or tell me it already exists and get my head out of --- the dark.
I wanted to use 416 or 601 heads on my 90 305. If I use 416 or 601 heads will the serpentine belt and everything else bolt up to those heads, or do I have to do some mods? Looking on the net I found everyone saying everything. From it will hook up - to drill holes in the old heads and be sure to plug them right because you are going to go through the water ports in the heads.
So does anyone know?
If anyone has any information about any heads and bolt up problems for belts, or alternators, power steering, air conditioning, water pumps, how about posting it in one place so anyone can get to it? Feel free to put it here - I will not think you are hijacking the thread - any heads with bolt on problems with any accessories.
I don't want to buy heads to find out that now I have to redo the belt system, or take them into a machine shop so everything will fit. If I know in advance that is one thing, I can have all the machining done at one time, but to find out after it is all bought and you want to start installing, well that is something else.
So does anyone know if you put 601 or 416 heads on a 90 305 do you have to do anything else to bolt the accessories up to the existing setup?
Hope this question makes sense.

tony_cogliandro

iTrader: (3)

i must ask some tough questions, no one ever seems able to answer them. well if they were easy i would not have to ask.

drknow90rs_ss@y

iTrader: (3)

I had not heard of any problems with this. I have heard that some aftermarket heads do not have the holes in exactly the right place... Sorry, thats all I know...

squirted1

iTrader: (2)

he might have meant that heads prior to 1969(I think?) did not have accessory holes drilled in them for mounting of alt., ac, ps and such

1989GTATransAm

iTrader: (3)

I would think as long as they have the three holes tapped in the front of them.

drknow90rs_ss@y

iTrader: (3)

Those are my thoughts as well, but I'm not too knowlegable on that subject.

Air_Adam

601 heads will work just fine. So will the 416.

JamesC

iTrader: (5)

I recall reading threads where members were forced to drill and tap a hole in the head when swapping in a serp system.

JamesC

tony_cogliandro

iTrader: (3)

well i think i have my answer. that you all for your help.
so everything from my 90 305 should bolt up to the 416 or 601 heads - that is great news.
thanks again.
tony