Heads Questions help before I buy

y0ukantride · Jun 25, 2010

Looking at getting some new aluminum heads for my 306. My question is what cc should i go for? I see many different cc's and not sure what would be best for me. Heard to big is a waste. see a lot of 180 cc 190cc 205cc 210cc Looking to buy in the next week, burped headgasket so mise well. thanks for any help

90lxcoupe · Jun 25, 2010

trick flow fast as cast are hard to beat for the money, which is a 185cc head

WLDHRSE · Jun 25, 2010

What do you want to do with the motor/car? Mild street build, AFR 165's are great although fairly expensive.

Young Gun · Jun 26, 2010

For a 306, anything from 165cc-190cc should be fine. Its not neccesarly how big the intake runners are that you should determine, its the flow ratings of the heads at lift you are wanting. If your running a bigger cam and it likes the revs, go with a larger cc, but since its a 306, I would recomend AFR 185, Canfield 192, RHS heads are also very good, and Trick Flow is always a good choice. I have Canfields on my 306 and love them.

y0ukantride · Jun 26, 2010

Right on thanks for the help.. im looking to spend around 800 bucks.. Would love to get some afr heads but they about double the price im looking to spend. I also see a lot of people talking about different valve angles and not really sure why? Im guessing it has something to do with cam lift. I am not sure the cam lift or duration i have was already in the car when i purchased it .. Has a pretty good lope, comp cam

y0ukantride · Jun 26, 2010

ohh and the car is just a toy not a daily driver but i would like to keep it streetable

90lxcoupe · Jun 27, 2010

for 800 bucks your not gonna get much, if i was you id keep saving, even if you got a set of twisted wedge heads used by the time you have them decked and checked out you will be into them for a grand

281pony · Jun 28, 2010

you can find some good used heads for 800. i've seen tfs fast as cast go for 900 before never ran.

just make sure if you buy used, its a reputable seller. don't settle, heads are a big component and alot of work to install.

Cornell82 · Jun 28, 2010

how about patriot heads? anyone use these, aluminium heads for about 950 i believe they are 180-185cc runners. i am thinking about throwing a set on my car until I can get a stroker built for next year.

2000xp8 · Jun 28, 2010

Cornell82 said:
how about patriot heads? anyone use these, aluminium heads for about 950 i believe they are 180-185cc runners. i am thinking about throwing a set on my car until I can get a stroker built for next year.

No patriot heads, there is a reason they are cheap, it's because you'll have to put another $400 into them to get them right.

Look for afr 165's, twisted wedges, gt40x or edelbrock rpms.
Also be prepared no matter what you buy to get a valve job, even on brand new heads, it's worth the extra money.

Heads Questions help before I buy

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