Lt4 heads?
Registered User
Joined: Jul 1999
Posts: 1,041
From: Robinson, IL
Just a note of otherwise opinion:
Not all engines are built to be drag raced. Therefore, peak power, airflow numbers and other variables only of importance to a drag racer, do not come into consideration. Those of us who have to navigate the smog laws and maintain insurance and vehicle registration and commute to work in our cars and still require the occasional meal of Sushi or Horsemeat, have other requiremens dictating our designs and engine evolvement.
My car is supercharged (ATI P1SC). It could be a lot more powerful if I changed the cam and pulley. I have the LT4 setup, because I originally was running a Hotcam. With the supercharger I changed cams. The heads were already ported, something that probabably didn't make much difference when going supercharged, but had tremendous effect on the hotcam. My original LT4 setup pulled 339RWHP with the 24# injectors, LT4 manifolds and a stock PCM tune. My suspension (Bilstein Level II) is completely at odds with drag racing. But let's meet up on the highway and we can both drop into 2nd or 3rd and see what happens. Maybe a little Hwy1 between Bodega and Fort Bragg?
Not all engines are built to be drag raced. Therefore, peak power, airflow numbers and other variables only of importance to a drag racer, do not come into consideration. Those of us who have to navigate the smog laws and maintain insurance and vehicle registration and commute to work in our cars and still require the occasional meal of Sushi or Horsemeat, have other requiremens dictating our designs and engine evolvement.
My car is supercharged (ATI P1SC). It could be a lot more powerful if I changed the cam and pulley. I have the LT4 setup, because I originally was running a Hotcam. With the supercharger I changed cams. The heads were already ported, something that probabably didn't make much difference when going supercharged, but had tremendous effect on the hotcam. My original LT4 setup pulled 339RWHP with the 24# injectors, LT4 manifolds and a stock PCM tune. My suspension (Bilstein Level II) is completely at odds with drag racing. But let's meet up on the highway and we can both drop into 2nd or 3rd and see what happens. Maybe a little Hwy1 between Bodega and Fort Bragg?
I too have my car set up for the highway with a lightweight flywheel, 3.73s, and near oem suspension. The exception is the low fuel mileage cam selection.
I have never taken my car to the track, and I definitely don't have my car set up for the track. I do feel like I am in the minority compared to others on this board.
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