Outer Limits 4x4 Board

just wondering if anyone has had experiance with afr and brodix ally cylinder heads ? looking for a good set of heads for a 350 and these two brands have popped up,thanks

Speak to Sam or Izzy at Chev Offroad, 03 95557308 they have built as many HI Po chev's as anyone else

You could also try http://www.my105.com there are several ex V8Supercar head sets on there at the moment, depending on what your looking at spending.

- David.

Depending on quite a few things such as budget, power required, what rpm the power is required etc. There are many options.

Here is a link to Edelbrock heads for SBC. As you can see there are many & varied heads for different applications/budget.
http://www.edelbrock.com/automotive_new ... y_sb.shtml" onclick="window.open(this.href);return false;

You can't just throw a set of alloy heads on & expect to make great HP.

An engine needs to be a complete package to work well. What specs are the bottom end, camshaft etc?
What manifold/carby/efi?

What is the engine to be used for?

All the above questions need to be answered before you can select what heads will suit your application.

Cheers,

Micko

MICK77 wrote:Depending on quite a few things such as budget, power required, what rpm the power is required etc. There are many options.

Here is a link to Edelbrock heads for SBC. As you can see there are many & varied heads for different applications/budget.
http://www.edelbrock.com/automotive_new ... y_sb.shtml" onclick="window.open(this.href);return false;

You can't just throw a set of alloy heads on & expect to make great HP.

An engine needs to be a complete package to work well. What specs are the bottom end, camshaft etc?
What manifold/carby/efi?

What is the engine to be used for?

All the above questions need to be answered before you can select what heads will suit your application.

Cheers,

Micko

thanks for that,its bored 30" over running hypertecnic flat tops,not sure of the cam specs off hand(only fairly mild) with 64cc combustion chamber heads it will have approx' 10.5-1 compresson ratio,weiand stealth dual plane intake,750 d/pump holley.will get used for towing as well as every day driving etc,am hoping to get between 350 and 400hp am now looking at a set of edelbrock performer rpm heads?.

tassie wombat wrote:

MICK77 wrote:Depending on quite a few things such as budget, power required, what rpm the power is required etc. There are many options.

Here is a link to Edelbrock heads for SBC. As you can see there are many & varied heads for different applications/budget.
http://www.edelbrock.com/automotive_new ... y_sb.shtml" onclick="window.open(this.href);return false;

You can't just throw a set of alloy heads on & expect to make great HP.

An engine needs to be a complete package to work well. What specs are the bottom end, camshaft etc?
What manifold/carby/efi?

What is the engine to be used for?

All the above questions need to be answered before you can select what heads will suit your application.

Cheers,

Micko

thanks for that,its bored 30" over running hypertecnic flat tops,not sure of the cam specs off hand(only fairly mild) with 64cc combustion chamber heads it will have approx' 10.5-1 compresson ratio,weiand stealth dual plane intake,750 d/pump holley.will get used for towing as well as every day driving etc,am hoping to get between 350 and 400hp am now looking at a set of edelbrock performer rpm heads?.

If the cam is only mild, you will struggle to attain that sort of HP.

Cheers,

Micko

MICK77 wrote:

tassie wombat wrote:

MICK77 wrote:Depending on quite a few things such as budget, power required, what rpm the power is required etc. There are many options.

Here is a link to Edelbrock heads for SBC. As you can see there are many & varied heads for different applications/budget.
http://www.edelbrock.com/automotive_new ... y_sb.shtml" onclick="window.open(this.href);return false;

You can't just throw a set of alloy heads on & expect to make great HP.

An engine needs to be a complete package to work well. What specs are the bottom end, camshaft etc?
What manifold/carby/efi?

What is the engine to be used for?

All the above questions need to be answered before you can select what heads will suit your application.

Cheers,

Micko

thanks for that,its bored 30" over running hypertecnic flat tops,not sure of the cam specs off hand(only fairly mild) with 64cc combustion chamber heads it will have approx' 10.5-1 compresson ratio,weiand stealth dual plane intake,750 d/pump holley.will get used for towing as well as every day driving etc,am hoping to get between 350 and 400hp am now looking at a set of edelbrock performer rpm heads?.

If the cam is only mild, you will struggle to attain that sort of HP.

Cheers,

Micko

it was putting out 200kw at rear wheels in a corvette running standard chev tpi and through a turbo 400 auto,which im thinking is about 350hp at the flywheel.

I got just shy of 300hp out of a 360 ci with std cast heads, stock compression and a 470cfm carb....cam was a towing/LPG grind, very close to stock.

With higher comp, 750 carb and alloy heads, the power TW is seeking should be not out of reach, or damn close to it.

You've got too much carb..........

RED60 wrote:You've got too much carb..........

i thought it was too big as well,but the engine builder said a 750 dp would be perfect??

You want low-mid range, not mid-upper rev power..... a 650 would be better, on a dual plane manifold

I would consider a Holley 750 carb, but a vacuum secondary, not a double-pumper.

If I were building a SBC for a 4x4, I would also look at a 4x4 cam or a light RV cam, and not get too silly with cylinder heads.

As GUTripper said - you want low-mid range torque, not all-out power.