6th Gen ('00-'05): 3800 N/A Engine overhaul!!
#11
04-27-2013, 10:33 AM
my good friend it making 326whp on a dynojet with race fuel and 304whp on pump fuel.
stock l67 bottom end
stock cam
stock heads
ported gen v (3.0 pulley)
intercooled
1.9 rockers
headers
built trans
A LOT OF TUNING!!!!
stock l67 bottom end
stock cam
stock heads
ported gen v (3.0 pulley)
intercooled
1.9 rockers
headers
built trans
A LOT OF TUNING!!!!
#13
04-27-2013, 07:38 PM
Ok: So you are going to run a full L67 and your stock NA trans. Neither stock PCM will run the combo. you will need a custom pcm from one of the vendors. the main diffs are: trans gear ratio, MAP sensor, and the boost bypass solenoid.
-Harness. not needed. you can get the two missing harness pieces for less then what you would pay at a junk yard for a harness. (boost bypass solenoid, MAP sensor)
-Either PCM can be reprogrammed or used as a core for your mail order PCM. For the power level you are after I strongly recommend a custom in car tune vs a mail order PCM.
The following is how I recommend go about the power level you are after:
-Don't waist time having the engine bored or custom internals. this money can be better spent on other mods. the stock bottom end is plenty strong for even the radical builds.
-XP cam, 105# springs, double roller timing chain, new valve seals
-Gen V blower, Headers, Custom tuned PCM
this should hit your 250-300 hp mark.
My plan to reach about 300 hp is:
stock NA block.
Ported Heads w/ Si Valves, viaton seals, L76 springs, mod'd retainers
Port matched LIM w/ coolant block off for SC
Ported Gen III 3.8" pulley
Ported L67 TB and have Northstar TB to test as well
Speed Daddy Headers
Full 2.5" exhaust
Lots of tuning.
-Harness. not needed. you can get the two missing harness pieces for less then what you would pay at a junk yard for a harness. (boost bypass solenoid, MAP sensor)
-Either PCM can be reprogrammed or used as a core for your mail order PCM. For the power level you are after I strongly recommend a custom in car tune vs a mail order PCM.
The following is how I recommend go about the power level you are after:
-Don't waist time having the engine bored or custom internals. this money can be better spent on other mods. the stock bottom end is plenty strong for even the radical builds.
-XP cam, 105# springs, double roller timing chain, new valve seals
-Gen V blower, Headers, Custom tuned PCM
this should hit your 250-300 hp mark.
My plan to reach about 300 hp is:
stock NA block.
Ported Heads w/ Si Valves, viaton seals, L76 springs, mod'd retainers
Port matched LIM w/ coolant block off for SC
Ported Gen III 3.8" pulley
Ported L67 TB and have Northstar TB to test as well
Speed Daddy Headers
Full 2.5" exhaust
Lots of tuning.
#16
04-28-2013, 05:54 AM
FYI. The topswaps high compression makes modding and tuning much harder and less forgiving. I chose this route because: 1) I have extensive tuning background. So I can keep it Kr free. 2) it was cheaper to get the L36 drop in with top swap kit. 3) I preferred having the 3.29 gears of the NA Trans. 4) it got the car back on the road faster while still allowing me to have time to port everything.
When I made my suggested mod list for you I was assuming you we're going L67. Another option would be the L32. Basically it's the newer series 3 L67. But you would need to change the TB as its is fly by wire.
When I made my suggested mod list for you I was assuming you we're going L67. Another option would be the L32. Basically it's the newer series 3 L67. But you would need to change the TB as its is fly by wire.
#19
05-09-2013, 12:17 PM
I thnk he is considering a topswap later... But doing the NA just to get it running. Which is exactly what I had to do a few years ago
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