Ported heads / who is best
10-05-2010, 08:10 PM
#2
There is no best! They're all the same. FRPP, Livernois and BBR all flow between 292-295 cfm at 0.600 lift. The advantage to FRPP is they're new castings vs the other guys port used sets but the FRPP are very expensive so price wise Livernois has the advantage.
10-06-2010, 11:35 AM
#4
2nd Gear Member
Join Date: Nov 2007
Location: CO
Posts: 439
None of them if you aren't going to go big and build the rest of the motor. The stock 3v heads flow just fine for what the stock block can handle. The low end torque loss is not worth the top end gains for a daily driver. If you're funning F/I, you can get to the breaking point of the stock internals just fine without heads.
10-11-2010, 06:41 PM
#7
1st Gear Member
Join Date: Oct 2010
Location: Fast Forward
Posts: 65
What he said.
Last time I checked we are all running used castings. No problem so far.
Depends on the application/combination and what you want to spend.
If you have a .500 lift cam the heads with big .600 lift numbers may not be as good for that application.
Big flow numbers are arguably not as important as ones that have more average flow across the valve lift range. For example from the numbers I have been able to find the Livernois Stage III heads have the highest average flow up to .500 lift (not a lot of people go with a bigger cam than that).
Then there is a place like Total Engine Airflow which will hand finish their CNC heads and they have a fantastic intake to exhaust flow ratio. They would be great heads for a FI motor. The problem is they are expensive and they don’t answer the phone.
Heads are a lot like cams. You need to clearly define your goals and then choose accordingly.
If you have a .500 lift cam the heads with big .600 lift numbers may not be as good for that application.
Big flow numbers are arguably not as important as ones that have more average flow across the valve lift range. For example from the numbers I have been able to find the Livernois Stage III heads have the highest average flow up to .500 lift (not a lot of people go with a bigger cam than that).
Then there is a place like Total Engine Airflow which will hand finish their CNC heads and they have a fantastic intake to exhaust flow ratio. They would be great heads for a FI motor. The problem is they are expensive and they don’t answer the phone.
Heads are a lot like cams. You need to clearly define your goals and then choose accordingly.
10-12-2010, 10:46 AM
#8
2nd Gear Member
Join Date: Nov 2007
Location: CO
Posts: 439
What he said.
Last time I checked we are all running used castings. No problem so far.
Depends on the application/combination and what you want to spend.
If you have a .500 lift cam the heads with big .600 lift numbers may not be as good for that application.
Big flow numbers are arguably not as important as ones that have more average flow across the valve lift range. For example from the numbers I have been able to find the Livernois Stage III heads have the highest average flow up to .500 lift (not a lot of people go with a bigger cam than that).
Then there is a place like Total Engine Airflow which will hand finish their CNC heads and they have a fantastic intake to exhaust flow ratio. They would be great heads for a FI motor. The problem is they are expensive and they don’t answer the phone.
Heads are a lot like cams. You need to clearly define your goals and then choose accordingly.
Last time I checked we are all running used castings. No problem so far.
Depends on the application/combination and what you want to spend.
If you have a .500 lift cam the heads with big .600 lift numbers may not be as good for that application.
Big flow numbers are arguably not as important as ones that have more average flow across the valve lift range. For example from the numbers I have been able to find the Livernois Stage III heads have the highest average flow up to .500 lift (not a lot of people go with a bigger cam than that).
Then there is a place like Total Engine Airflow which will hand finish their CNC heads and they have a fantastic intake to exhaust flow ratio. They would be great heads for a FI motor. The problem is they are expensive and they don’t answer the phone.
Heads are a lot like cams. You need to clearly define your goals and then choose accordingly.
10-12-2010, 07:49 PM
#9
2nd Gear Member
Thread Starter
Join Date: Nov 2007
Posts: 201
Well I have the shortblock sitting at my brother's (mechanics) house. I want to get a nice set of p/p heads before I deploy just to make things a little easier on him. I have to stick with stock cams because of California's smog laws (DAMN IT)
The rest of the list will be bought while I am gone and whenver I can get to a computer
The rest of the list will be bought while I am gone and whenver I can get to a computer
10-16-2010, 01:08 PM
#10
1st Gear Member
Join Date: Oct 2010
Location: Fast Forward
Posts: 65
I’d go with the Livernois ones. They also have the added benefit of having the new spark plug design.
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