Is it possible to get 500 hp with 6x heads?
But it is possible to reach 500 hp with ported 6x heads and a roller cam- HPP did a build a few years ago and did it with a carb. It’s common to see over 500 hp with stock e-heads or KRE’s with a HFT (hydraulic flat tappet cam) on a 461 or 455- go over to Performance years forum and you should be able to dig up a few recipes in the street section.
What kind of Head do I need for a 400 CID Pontiac?
The 6x-8 heads are low compression heads, they will work good on a 400 engine if prepped properly, larger exhaust valves, port work, etc. 500 hp is a pretty stout 400 cid pontiac motor. I would play to the pontiac engines strength, which is torque. 500 lb ft of torque is doable.
What kind of head does a Pontiac 6x 8 use?
Pontiac 6X Heads, Advice Needed (pontiac masters) The 6x-8 heads are low compression heads, they will work good on a 400 engine if prepped properly, larger exhaust valves, port work, etc. 500 hp is a pretty stout 400 cid pontiac motor. I would play to the pontiac engines strength, which is torque. 500 lb ft of torque is doable.
Which is better 500 hp or 400 CID?
The 6x-8 heads are low compression heads, they will work good on a 400 engine if prepped properly, larger exhaust valves, port work, etc. 500 hp is a pretty stout 400 cid pontiac motor. I would play to the pontiac engines strength, which is torque. 500 lb ft of torque is doable. 500 hp will be a challenge for a street engine.
What are the intake valves on a 6x head?
All stock 6X heads have 2.11″ intake valves and 1.66″ exhaust valves. 7. All stock 6X heads can be reconditioned, milled and performance enhanced.
But it is possible to reach 500 hp with ported 6x heads and a roller cam- HPP did a build a few years ago and did it with a carb. It’s common to see over 500 hp with stock e-heads or KRE’s with a HFT (hydraulic flat tappet cam) on a 461 or 455- go over to Performance years forum and you should be able to dig up a few recipes in the street section.
The 6x-8 heads are low compression heads, they will work good on a 400 engine if prepped properly, larger exhaust valves, port work, etc. 500 hp is a pretty stout 400 cid pontiac motor. I would play to the pontiac engines strength, which is torque. 500 lb ft of torque is doable.
Pontiac 6X Heads, Advice Needed (pontiac masters) The 6x-8 heads are low compression heads, they will work good on a 400 engine if prepped properly, larger exhaust valves, port work, etc. 500 hp is a pretty stout 400 cid pontiac motor. I would play to the pontiac engines strength, which is torque. 500 lb ft of torque is doable.