ZZ4 people, how have you modified your engines for more power?
10-13-2003, 08:06 PM
#1
Burning Brakes
Thread Starter
ZZ4 people, how have you modified your engines for more power?
Not that I have any money do do any thing with these days. I just felt the nede to start a discussion on crate motor horse power and since i have a ZZ4 w/ ported heads and intake figured i should ask the question. She is good for 385hp/410 tq. But i have the stock roller cam that comes with the ZZ4. What roller cam would you recommend for a cam swap ( as long as power remains in low RPM) I like the car to erally open up around 3500RPM. What manifold changes have you guys made if any? Carberator will need changing as well, as i'm using the old Q-jet. This is not a daily driver but a weekend car.
10-13-2003, 08:24 PM
#2
Burning Brakes
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Re: ZZ4 people, how have you modified your engines for more power? (sharkthehunter77)
Do you have the HOT Cam and 1:5 roller rockers? That might help or you can put the FAST BURN heads on and get some awesome power that way. :cool: :cheers: :seeya
10-13-2003, 08:39 PM
#3
Melting Slicks
Re: ZZ4 people, how have you modified your engines for more power? (phxraptor)
I have the HOTCAM....and in your situation with looking for the power range around 3500 i would suggest the HOTCAM and the Edelbrock RPM air gap intake......
I love the hotcam, but I am all about racing and high end HP....so the hotcam wasnt the optimal choice but I recieved it as a gift and it works great...BTW get the kit with hte 1.6 rockers.. And I would also like to throw on a single plane hi-intake. i just threw on a speed demon 750 carb as well.
And of course, im spraying and the zz4 handles it great :jester
I love the hotcam, but I am all about racing and high end HP....so the hotcam wasnt the optimal choice but I recieved it as a gift and it works great...BTW get the kit with hte 1.6 rockers.. And I would also like to throw on a single plane hi-intake. i just threw on a speed demon 750 carb as well.
And of course, im spraying and the zz4 handles it great :jester
10-13-2003, 09:09 PM
#4
3rd Gear
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Re: ZZ4 people, how have you modified your engines for more power? (sharkthehunter77)
I went to a LPE Super Ram with 38lb injectors, ported ZZ4 heads with 1.6 exhuast valves, heads flow 198cfm on intake and 188 on Exhaust.MSD 6AL, Hooker Super comp headers, and a Crane 5.10/5.28 lift cam (works fine with the LT4 springs installed @110 lbs), 1.5 roller rocker(all of which work under C4 Magnisium valve covers). This came tunes better than the HOT cam with FI. The 75 this is in has a ROD 6-spd and 3.36 gears. At 6,000 ft the car has ran a best of 13.48(12.50 Sea Level) and gets 24 mpg at 75. :auto:
10-13-2003, 09:15 PM
#5
Burning Brakes
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Re: ZZ4 people, how have you modified your engines for more power? (sharkthehunter77)
In a couple of days I should have my ZZ4 running with new fast burn heads, LT4 hot cam, 1.6 rockers and Edelbrock Vortec Air Gap intake. I may have to change the edelbrock 750 though....... we'll see. As soon as that's done it's back in the shop for a transmission change. My mechanic wants me to put in a ROD 6 speed as he is familiar with them. I've been looking at the Tremec TKO 5 speed instead. I just haven't decided yet. Anyone wanna voice their opinion to help me make a decision? :banghead:
10-13-2003, 10:21 PM
#6
Racer
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Re: ZZ4 people, how have you modified your engines for more power? (Older Than Dirt)
Modified it...
I am hoping the damn thing keeps me happy as is for atleast 100 miles... hehe... :crazy: ... Thats like 400 times down the strip!!! :jester
I just got it in and am not even on the street yet.
Spook
:reddevil
I am hoping the damn thing keeps me happy as is for atleast 100 miles... hehe... :crazy: ... Thats like 400 times down the strip!!! :jester
I just got it in and am not even on the street yet.
Spook
:reddevil
10-13-2003, 11:59 PM
#7
Instructor
Re: ZZ4 people, how have you modified your engines for more power? (Spook)
Here's what a popular chevy crate engine dealer does to upgrade the ZZ4 -
1. 385 HP- Ported ZZ4 cylinder heads and match ported intake manifold.
2. 395 HP- #1 plus an Edelbrock RPM intake manifold. 395HP/416lbs torque
3. 400 HP- #1 & #2 plus roller rockers with a ratio of 1.5. 400HP/420lbs of torque
4. 420 HP- #1, #2 & #3. LT-4 H.O.T. cam with 1.6 roller rockers. 420HP/427lbs of torque.
5. 440 HP- #1, #2, #3, #4 add a Edlebrock Victor Jr. intake & increase in valve size - 2.000" intake and 1.560" exhaust. 440HP/437lbs of torque.
1. 385 HP- Ported ZZ4 cylinder heads and match ported intake manifold.
2. 395 HP- #1 plus an Edelbrock RPM intake manifold. 395HP/416lbs torque
3. 400 HP- #1 & #2 plus roller rockers with a ratio of 1.5. 400HP/420lbs of torque
4. 420 HP- #1, #2 & #3. LT-4 H.O.T. cam with 1.6 roller rockers. 420HP/427lbs of torque.
5. 440 HP- #1, #2, #3, #4 add a Edlebrock Victor Jr. intake & increase in valve size - 2.000" intake and 1.560" exhaust. 440HP/437lbs of torque.
10-14-2003, 12:21 AM
#8
Melting Slicks
Re: ZZ4 people, how have you modified your engines for more power? (Older Than Dirt)
Older than Dirt....depends on what you are going to use the car for and your current rear gears....if anything more than 3.55, go the ROD6 with a ~3.01 first gear or lower numerical. If its a 3.55, 3.36 or 3.08, the Tremec would be my choice. But if you are going to use the car for racing, then the ROD would be better due to the closer gear ratios.
.02
Chris
.02
Chris
