Thats the only problem I have with DOHC engines...no low end torque, the topend is nice, but I just can't stand now having instant 0torque. I was just born to drive a pushrod engine. I just have to have low end torque. However, thats the problem with my car...no low end torque...it won't spin the tires until 10mph when the turbo spools, yeah when it does break them loose at 10mph it just goes crazy and smoke rolls out, but still, I need more low end torque BEFORE the turbo spools. Time to open up the exhaust to help the turbo spool I guess. I feel for those DOHC guys without much low end torque.
Jim, do they make headers for the 4.6 Northstars??? If so, do they bolt up to the 4.0L??? I'm thinking probably not or you wouldn't be looking, but worth a shot.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!