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03-23-2007, 09:05 AM
#36
Originally Posted by ap2002
have you thought about some 317's for that F.I. setup?? I believe people have tried it and have gotten great results with F.I.
I currently make ~9lbs boost with the 3.2" pulley
If I went to better breathing heads like the 317's it will drop my CR to ? 8.5 ? allowing me to up boost but how would it afftect my DD when not in boost?
Thanks again everyone for the kind words, make the moneys spent feel worthy.
03-23-2007, 12:38 PM
#38
TECH Veteran
Originally Posted by trever1t
My current heads are supossedly similar to the 243's but chambered so with the flat tops runs a CR of 9.9:1
I currently make ~9lbs boost with the 3.2" pulley
If I went to better breathing heads like the 317's it will drop my CR to ? 8.5 ? allowing me to up boost but how would it afftect my DD when not in boost?
Thanks again everyone for the kind words, make the moneys spent feel worthy.
I currently make ~9lbs boost with the 3.2" pulley
If I went to better breathing heads like the 317's it will drop my CR to ? 8.5 ? allowing me to up boost but how would it afftect my DD when not in boost?
Thanks again everyone for the kind words, make the moneys spent feel worthy.
The heads on an L33 flow the same as 317's as far as I am aware. You certainly won't want less compression. If you get the boost over 10psi you'll be losing alot of the efficiency of that blower. I would run the stock heads and just go to a 3" pulley. From there add some cam.
03-23-2007, 02:55 PM
#39
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Originally Posted by zippy
The heads on an L33 flow the same as 317's as far as I am aware. You certainly won't want less compression. If you get the boost over 10psi you'll be losing alot of the efficiency of that blower. I would run the stock heads and just go to a 3" pulley. From there add some cam.
ok, that clears it up...
03-25-2007, 10:30 AM
#40
Originally Posted by zippy
The heads on an L33 flow the same as 317's as far as I am aware. You certainly won't want less compression. If you get the boost over 10psi you'll be losing alot of the efficiency of that blower. I would run the stock heads and just go to a 3" pulley. From there add some cam.
What's the trade-off, less low end torque before boost, right?