aluminum heads

sean

Member
what are the diff. between 18 and 23 degree chevy aluminum heads? what headers will work with out getting in the way of the plugs?
 

BigAl...

Member
Re: aluminum heads

sean said:
what are the diff. between 18 and 23 degree chevy aluminum heads? what headers will work with out getting in the way of the plugs?


the obvious diff is the valve angle, the 18deg heads defineteley offer a greater hp gain but usually are more expensive and require different headers/valve covers/intake manifold. you can usually get a good deal on a set of 23deg heads on ebay ($500-$2000) depending on condition and if they are complete or just bare. as far as headers are conserned forget about finding some reasonably priced 18deg headers (not gonna happen) custom making you own set is really the best option. you can modify kenne bell headers to work with most 23deg heads but a custom set will always be better.

with that said, I've never owned a set of 18 deg heads but I am currently using the bowtie 23deg heads on my build. good luck.

BigAl...
 

nightdiver

Active member
Re: aluminum heads

I bought my 23* pontiacs 2100 $ . Ported to flow over 320 cfm but i had to buy offset Jesels, saft mounted rockers. It would also be good to get offset lifters in order to get the intake pushrod a bit more straight. So add 1400$
I made my headers on my own , mig welded, and they look like Mikes twin turbo set up. No more burned wires. You also got to know how to measure and get the right pushrod length. The intake comes from the 18* set up drilled to fit :rant:
I use the 3,5 TB

There is a lot of work that have to be done but the results are amazing :rotf:
Then you need an extreme tranny :roll:
 

BigAl...

Member
Re: aluminum heads

I hate to jump off topic but I was wondering what cam you're running (NightDiver). If you prefer not to say, I understand.

BigAl...
 

nightdiver

Active member
Re: aluminum heads

i hate the guys that say "i dont know what my builder used"
I had the 422 cam and now im installing a custom cam with a little bit more agressive intake lobe. I also got a solid beast that wont fit the stock block cause the base circle is smaller and that makes the solid rollers to contact the block where the ties are. This one goes in the tt bowtie
 
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