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no power after rebuild

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Old 05-11-2002 | 10:32 PM
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simple's Avatar
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From: Honolulu, Hawaii
no power after rebuild

i have an 89 T/A(L98 bored .030 over, fully balanced, speedpro pistons, arp bolts, zz4 cam, decked heads w/3 angle valve job, 2200 stall, vette servos, 24# SVO injectors, vortech s-trim) im running without the blower till the motor breaks in. now here is my problem...

when i give it a little gas, theres a slight hesitation before it actually goes. once it goes, power and acceleration both seem fine from about 1500-2700 rpms or so. once it reaches around 3000, it just refuses to respond any further. no gain in power, no gain in speed...nothing. fastest speed i reached on a 2 mile stretch of highway was about 65mph....the car just wont pull past 3000 RPMS.

im still using the stock ECM so that could be PART of my problem. although i dont think using a stock ECM with my setup would hamper performance this much...or would it? also, timing is set at 6* so nothing wrong there.
Old 05-11-2002 | 11:11 PM
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Jza's Avatar
Jza
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From: Tulsa, OK
A solid RPM wall usually indicates an exhaust blockage problem, typically a clogged cat. Still runnin' one?
Old 05-11-2002 | 11:25 PM
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simple's Avatar
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nah, got rid of them awhile back. i remember throwing a rag over the exhaust pipes to make sure nothing went in there when the motor was out but im pretty sure i took them off.

ugggh, i hate this
Old 05-11-2002 | 11:30 PM
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From: Spokane Wa
Originally posted by simple
nah, got rid of them awhile back. i remember throwing a rag over the exhaust pipes to make sure nothing went in there when the motor was out but im pretty sure i took them off.

ugggh, i hate this
I would check that since your not 100% sure.........Hell Im always wrong even when Im 100% sure!
Old 05-11-2002 | 11:38 PM
  #5  
simple's Avatar
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From: Honolulu, Hawaii
yea i plan on checking that long with my fuel pressure. hell, ill probably end up checking every little thing there is. i have to drop the tranny anyway because i have a rather nasty oil leak from the rear main seal.
Old 05-11-2002 | 11:41 PM
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From: Spokane Wa
Just remember to keep it simple and check the small things first! I spent over $500 dollars and 3 days of work time on a starting problem..........................................................It was a bad ground!
Old 05-12-2002 | 12:16 AM
  #7  
simple's Avatar
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From: Honolulu, Hawaii
lol, i know what you mean. something similar to this happened to me before and after 2 weeks of searching i finally found the problem...bad connection on the starter . too bad it couldnt be the same thing this time around
Old 05-12-2002 | 02:02 AM
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ZZ28ZZ's Avatar
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Joined: Apr 2002
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From: Austin
Car: 82 Z-28
Engine: 383 TPI
Transmission: 700R4
I know it's a @itch to check, but could the cam gear off 1 tooth?
Did ya notice the distributor being set to a different position to achieve ur 6 degs?
Did ya re-connect the wire you disconnected to check the timing?
Fuel press OK?
Fuel filter plugged??
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