What Size Combution Chamber On Aluminum Heads?

fiveohlover · Jun 9, 2012

still trying to put together my combo and get everything set up. I am not sure if i should get heads with a 58cc chamber for more compression or a biger 64cc chamber for better air flow and higher lift cam. car has a stock bottom end
Any opinions?

Rick 91GT · Jun 9, 2012

With the TFS heads, 64cc gets my vote.

lxman · Jun 9, 2012

stock e7 heads are 60cc

srtthis · Jun 10, 2012

Rick 91GT said:
With the TFS heads, 64cc gets my vote.

I would think 58's for the compression if he's going to run the stock short block

f8tlfiveo · Jun 10, 2012

Yeah I was thinking 64's will lower compression too much..

bigc2330 · Jun 10, 2012

Do you have plans for a supercharger or nitrous in the near future?

lxman · Jun 10, 2012

What are you going to do with the car? Is it going to be a daily driver what? We need more info on what you are wanting to do with it.

fiveohlover · Jun 10, 2012

going to be weekend hot street car. Not a daily driver. i want it to be street able though, and i am planning to stay n/a but i might add a 100 shot down the road in a few years. going to get custom cam and a holley sytemax2 intake. Planning to spin it to around 6500 rpm

lxman · Jun 10, 2012

Then I would personaly go with the higher combustion chamber. Its free power.

srtthis · Jun 10, 2012

I'd agree with the added compression... Unless Rick knows something I'm not thinking of

fiveohlover · Jun 11, 2012

will the 58cc chamber restrict my camshaft profile and head airflow?

Rick 91GT · Jun 11, 2012

The 58cc chamber will limited cam profile even with the twisted valves due to PTV clearance. The stock heads are around 64cc anyway so you will not really be losing an compression... While Im usually all for compression I like the 64cc, a more aggressive cam (duration) for this combo. I saw in a earlier thread you mentioned a stroker down the road, personally I like the 64cc CNC TFS heads on a 347 witha 4cc flattop, put you right at 10:1 perfect for pump gas and will run great NA and N2O.

To spin the motor 6500rpm you will need some type of chip or tuner since the factory EEC shuts fuel off at 6250rpm. The key is what are the future plans with the combo and car.

Gearbanger 101 · Jun 11, 2012

lxman said:
stock e7 heads are 60cc

It varies. I've seen them measure as much as 65cc.

f8tlfiveo said:
Yeah I was thinking 64's will lower compression too much..

His compression would be approximatley the same as it is now with the stock heads.

old_blue · Jun 11, 2012

RIck gets my vote. ( and my motor when I am ready LOL)

lxman · Jun 11, 2012

Man you guys crack me up. Anything you do meaning in chamber size changes, does change your compression ratio. Sometimes i read these post and hust wonder where you guys come up with some of this stuff. Even doing all the math taking in to account piaton compression height, combustion chamber , deck height etc. All this effects things. Going from a 58 cc head to a 64 cc head will lower compression.

srtthis · Jun 11, 2012

Yea but if stock heads are roughly 64cc and the trick flows are 64cc... Guess what smart guy! The compression is the same! No one argued the fact that the compression for the 58s and 64s would be the same

fiveohlover · Jun 11, 2012

Rick 91GT said:
The 58cc chamber will limited cam profile even with the twisted valves due to PTV clearance. The stock heads are around 64cc anyway so you will not really be losing an compression... While Im usually all for compression I like the 64cc, a more aggressive cam (duration) for this combo. I saw in a earlier thread you mentioned a stroker down the road, personally I like the 64cc CNC TFS heads on a 347 witha 4cc flattop, put you right at 10:1 perfect for pump gas and will run great NA and N2O.

To spin the motor 6500rpm you will need some type of chip or tuner since the factory EEC shuts fuel off at 6250rpm. The key is what are the future plans with the combo and car.

will a msd 6al with rev control let me spin it that high?

NIKwoaC · Jun 11, 2012

fiveohlover said:
will a msd 6al with rev control let me spin it that high?

No, the factory EEC will still cut fuel. You need to tune the EEC to raise its rev limiter.

old_blue · Jun 11, 2012

deleted, I'll keep my opinions to myself.

fiveohlover · Jun 11, 2012

NIKwoaC said:
No, the factory EEC will still cut fuel. You need to tune the EEC to raise its rev limiter.

so i need a dyno tune you are pretty much saying?

What Size Combution Chamber On Aluminum Heads?

fiveohlover

Member

Rick 91GT

Mustang Master

lxman

Member

srtthis

the guy doing it does every local racers rear end

f8tlfiveo

My wife likes my spool and blow-off valve.

bigc2330

Member

lxman

Member

fiveohlover

Member

lxman

Member

srtthis

the guy doing it does every local racers rear end

fiveohlover

Member

Rick 91GT

Mustang Master

Gearbanger 101

Straight Outta Locash

old_blue

lxman

Member

srtthis

the guy doing it does every local racers rear end

fiveohlover

Member

NIKwoaC

中國製造

old_blue

fiveohlover

Member

Similar threads

What Size Combution Chamber On Aluminum Heads?

Member

Mustang Master

Member

the guy doing it does every local racers rear end

My wife likes my spool and blow-off valve.

Member

Member

Member

Member

the guy doing it does every local racers rear end

Member

Mustang Master

Straight Outta Locash

Member

the guy doing it does every local racers rear end

Member

中國製造

Member

Similar threads

Privacy & Transparency

Privacy & Transparency