Help with Cam recommendation
Thread Starter
Teching In
Joined: Apr 2004
Posts: 8
Likes: 0
Help with Cam recommendation I havea 94 Z with a stock bottom end A4 LT1, with the following mods:
AFR LT1 heads
Hooker LT headers
ORY pipe
BBK Throttle body
K/N filter
SLP 2500 stall TC
3.73 rear gear
1.5 Roller rockers
TPIS ZZ9 cam
We were by TPIS that this combo should be good for 425 fwhp.
The 1/4 mile times have been dissapointing, in the 13.1 @ 104 mph range.
Had the car dyno tuned yesterday, 312 rwhp/336rwtq is the best they could coax out. Figuring 15% drivetrain loss, thats about 360 fwhp. Which is 75 hp short of the potential.
The TPIS ZZ9 cam is 212/226 and .483/.520 compared to:
Hot Cam 218/228 and .525/.525
CC 305 220/230 and .510/.510
Is the ZZ9 cam too small?
Any other ideas on wht to look for to bring the power up to the mod potential?
AFR LT1 heads
Hooker LT headers
ORY pipe
BBK Throttle body
K/N filter
SLP 2500 stall TC
3.73 rear gear
1.5 Roller rockers
TPIS ZZ9 cam
We were by TPIS that this combo should be good for 425 fwhp.
The 1/4 mile times have been dissapointing, in the 13.1 @ 104 mph range.
Had the car dyno tuned yesterday, 312 rwhp/336rwtq is the best they could coax out. Figuring 15% drivetrain loss, thats about 360 fwhp. Which is 75 hp short of the potential.
The TPIS ZZ9 cam is 212/226 and .483/.520 compared to:
Hot Cam 218/228 and .525/.525
CC 305 220/230 and .510/.510
Is the ZZ9 cam too small?
Any other ideas on wht to look for to bring the power up to the mod potential?
TECH Senior Member
Joined: Jun 2003
Posts: 9,339
Likes: 3
From: NYC metro area
with AFRs, you've simply got to get the valves open higher and longer to take advantage of them. Go Comp 306 or GM 847 with some 1.6 rockers... otherwise you would have been better off just putting on stock unported LT4 heads.
TECH Fanatic
Joined: Sep 2002
Posts: 1,112
Likes: 0
From: BLOOMFIELD, NY
Originally Posted by SSkindog
I havea 94 Z with a stock bottom end A4 LT1, with the following mods:
AFR LT1 heads
Hooker LT headers
ORY pipe
BBK Throttle body
K/N filter
SLP 2500 stall TC
3.73 rear gear
1.5 Roller rockers
TPIS ZZ9 cam
We were by TPIS that this combo should be good for 425 fwhp.
The 1/4 mile times have been dissapointing, in the 13.1 @ 104 mph range.
Had the car dyno tuned yesterday, 312 rwhp/336rwtq is the best they could coax out. Figuring 15% drivetrain loss, thats about 360 fwhp. Which is 75 hp short of the potential.
The TPIS ZZ9 cam is 212/226 and .483/.520 compared to:
Hot Cam 218/228 and .525/.525
CC 305 220/230 and .510/.510
Is the ZZ9 cam too small?
Any other ideas on wht to look for to bring the power up to the mod potential?
AFR LT1 heads
Hooker LT headers
ORY pipe
BBK Throttle body
K/N filter
SLP 2500 stall TC
3.73 rear gear
1.5 Roller rockers
TPIS ZZ9 cam
We were by TPIS that this combo should be good for 425 fwhp.
The 1/4 mile times have been dissapointing, in the 13.1 @ 104 mph range.
Had the car dyno tuned yesterday, 312 rwhp/336rwtq is the best they could coax out. Figuring 15% drivetrain loss, thats about 360 fwhp. Which is 75 hp short of the potential.
The TPIS ZZ9 cam is 212/226 and .483/.520 compared to:
Hot Cam 218/228 and .525/.525
CC 305 220/230 and .510/.510
Is the ZZ9 cam too small?
Any other ideas on wht to look for to bring the power up to the mod potential?
Thread Starter
Teching In
Joined: Apr 2004
Posts: 8
Likes: 0
Originally Posted by enisguy
with AFRs, you've simply got to get the valves open higher and longer to take advantage of them. Go Comp 306 or GM 847 with some 1.6 rockers... otherwise you would have been better off just putting on stock unported LT4 heads.
What about the stock 24# injectors? Big enough for 424 -450 hp?
