As for as the gears, I plan to add a 100 shot to take care of that.
cam with same spec. but more lope.
Thread Starter
Racer
Joined: Aug 2001
Posts: 355
Likes: 1
From: JACKSON MS
cam with same spec. but more lope.
I have 87 vette with zz3 engine. I ported the heads, intake plenum,intake, gutted maf, ported the stock exhaust manifolds, 1.6 rr, force air induction, ported slp siamese runners, 2500 stall, pcmforless chip, and 2.73 gear. Car runs very well. 7.84 best 1/8 mile time at 89.5 mph with 1.80 60' time, 1/4 mile 12.52 at 109 mph, this with injectors that have 85,000 miles on them.would probably have run better if I knew how to solve the pinging problem. I feel this is very good setup, but I would like more lope without changing the characteristics of engine performance. Can anyone suggest a good cam that would give me what I am looking for?
Melting Slicks
Joined: Jul 2004
Posts: 2,695
Likes: 0
From: Chicago Illinois
I have 87 vette with zz3 engine. I ported the heads, intake plenum,intake, gutted maf, ported the stock exhaust manifolds, 1.6 rr, force air induction, ported slp siamese runners, 2500 stall, pcmforless chip, and 2.73 gear. Car runs very well. 7.84 best 1/8 mile time at 89.5 mph with 1.80 60' time, 1/4 mile 12.52 at 109 mph, this with injectors that have 85,000 miles on them.would probably have run better if I knew how to solve the pinging problem. I feel this is very good setup, but I would like more lope without changing the characteristics of engine performance. Can anyone suggest a good cam that would give me what I am looking for?
Racer
Joined: Dec 2003
Posts: 454
Likes: 0
From: Double Oak TX
That's absolutely correct as narrow lobe seperations do not have the idle quality of wider lobe seperations and you'll also give up a tiny bit of fuel economy and drivability for not enough power for you to even notice it. Sounds like a lot of effort for.......sound.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
If the ECM is pulling timing but you do not hear ping, try the ESC upgrade on my site, story included there.
A set of coated FL headers with a pair of hi-flow cats will wake her up too. A single hi-flow cat will be too restrictive for the flow you need.
BTW, at 12.5sec & 109mph you are getting about all the current engine setup has to offer in the 1/4 mile.
A set of coated FL headers with a pair of hi-flow cats will wake her up too. A single hi-flow cat will be too restrictive for the flow you need.
BTW, at 12.5sec & 109mph you are getting about all the current engine setup has to offer in the 1/4 mile.
Last edited by 65Z01; Jan 17, 2007 at 12:49 AM. Reason: additions
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Safety Car
Joined: Apr 2005
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From: Dale City VA
A camshaft with tighter L/S will give you more lope at idle. Also due to the increased overlap it will bleed off cyl pressure and lower your Dynamic Comperssion Ratio, which would help with your spark knock problems.
The ZZ3 is not an overly high compression (static or dynamic) engine thou and with alum heads it should not spark knock unless you have the timing off badly or really crappy gas.
Will
The ZZ3 is not an overly high compression (static or dynamic) engine thou and with alum heads it should not spark knock unless you have the timing off badly or really crappy gas.
Will