Carb PV modification thread.
viewtopic.php?f=22&t=74210
A Holley 600 DP would get the job done much better than the 500 Eddy.
Don't forget that at 15 lbs of boost (Neglecting the loss of airflow due to heat) the turbo inlet flow in CFM is double the engine flow in CFM.
With the stock cam + 1.7 rockers and some port work, the peak Volumetric Efficiency is just under 2500 rpm and it falls off from that point.
That's just about the time you are making good boost so the engine is working against the turbo in making power.
The longer duration cam will move the peak VE up so the engine can take advantage of full boost.
On this engine I'm going to recommend the Crower 19213.
http://www.crower.com/camshafts/ford-24 ... 6-hdp.html
Ignore the description. It is overboard compared to the actual performance.
/viewtopic.php?f=2&t=74629&start=50
On future builds with better components you can look at much bigger cams and back to 1.6 ratio rockers.
With this cam and boost, the closed spring pressure needs to be around 125 lbs with close to 280 lbs open.
Do you know what springs are on the head now?
viewtopic.php?f=22&t=74210
A Holley 600 DP would get the job done much better than the 500 Eddy.
Don't forget that at 15 lbs of boost (Neglecting the loss of airflow due to heat) the turbo inlet flow in CFM is double the engine flow in CFM.
With the stock cam + 1.7 rockers and some port work, the peak Volumetric Efficiency is just under 2500 rpm and it falls off from that point.
That's just about the time you are making good boost so the engine is working against the turbo in making power.
The longer duration cam will move the peak VE up so the engine can take advantage of full boost.
On this engine I'm going to recommend the Crower 19213.
http://www.crower.com/camshafts/ford-24 ... 6-hdp.html
Ignore the description. It is overboard compared to the actual performance.
/viewtopic.php?f=2&t=74629&start=50
On future builds with better components you can look at much bigger cams and back to 1.6 ratio rockers.
With this cam and boost, the closed spring pressure needs to be around 125 lbs with close to 280 lbs open.
Do you know what springs are on the head now?