There is a pretty loud ticking sound comming from what seems to be the intake, does anyone know what this could be?

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

 

Injectors?


Is it Rpm dependant, Ticking or Tapping, ECt..

More info pls



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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Reader's ride -> My Ride

Just another Hot Rod kid, or thats what they all tell me.
Livin' the Stereotype

 

The ticking sound is constant throughout the RPM range, idle to redline. I do think it is comming from the intake, moreso on the passenger side, its incredibly hard to pin-point.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

 

get a mechanics stethoscope and check it out, i too would suspect an injector

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ICON Motorsports

1st & 3rd
MM Black Diamond 538 F&AM

 

What would make an injector do that? How could I fix it?

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

 

Could it be the rockers that are just naturally noisy? Or maybe an exhaust leak?

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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,

To see the ROC, Check out the webpage Here

 

Pre-Ignition?

 

from what you describe, all signs point to AN EXHAUST LEAK!!! thats it, nothing more, nothing less...if it hasnt been done before, there is no gasket in there. its just metal to metal. try tightenng the bolts, just bend the keepers out of the way, this is a beeeaach on the passenger side,(which is where 90% of the exhaust leaks i know of happen)its real tight in there. if that wont work, just save up enough money for some headers, and take it to a shop and get it done all at once. driving around with that ticking sound wont hurt anything except your nerves. if not, just get a shop to install a exhaust gasket. that would do the trick

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actually....let me get my foot out of my mouth....you said the ticking sound is CONSTANT with rpm!!! well damn, that wouldnt be exhaust leak now would it!! well I tried....

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click below to check out MY FORMULA PAGE!
http://www.formula350.com

or click below to email me
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PCV valve

 

99.8% sure it is an exhaust leak either at the header gasket or collector gaskets. I have to tighten all my bolts once a month to keep everything quiet. Collector gaskets seem to blow out a lot. Start the car cold and run your hand along the spots I mentioned and you should be able to feel air coming out where it is leaking. Oh yeah hurry when you do this....it gets hot quick!!

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Formerly known as 1984L69Z28

1984 Z28 - L69 optioned, 350HO w/ Trick Flow Heads, Drop Forged Lunati Crank, Crane Cam and 1.5 Roller Rockers, Stock Z28 Intake Manifold, Highly Tweaked Rochester Carb(700cfm), K&N Filter, ThermoMaster Chip w/ 160 Stat, Comp Headers, 3" Stainless Dual Exhaust w/ no Cat & Dynoflow Muffler, 4 wheel disc brakes, etc....

God bless us father, son, and holy ghost....whoever goes the fastest wins the most!!

 

It sounds like injectors to me.

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'87 Trans Am:
(Engine)
305 TPI
180 Degree Thermostat
JET Fan Switch
TB Bypass
Accel 300+ 8.8 Racing Wires
Accel Super Coil
Bosch Platinium Plugs
Custom Ram Air with K&N
Removed Emissions Equipment & Cat.
(Stereo)
Full Kenwood Excelon System

Member at kyfbodies.org

 

Yeah, unless you can find it, or correlate it with a problem, i would just say it is the normal injector noise and you're just now noticing it. Otherwise, we're all just guessing.

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Ed Maher - Moderator @ The Carb Board
92 Z28 Convertible - Quasar blue / Tan top
LB9 4L60 GU2 G80 - stock, soon to be sleeper
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

Anyone think it might be a collapsed lifter.

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'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER
EDELBROCK 600CFM CARB.
KN AIRFILTER
UNDERDRIVE PULLEY
ACCEL HEI DISTRIBUTOR
2:73 GEARS

 

I guess I should try tightening my headers down. I pulled them off when I pulled the heads when installed my new cam. I didn't replace the donut gaskets on the collector to y-pipe area, but it doesn't sound like its comming from down there.

------------------
1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

 

thats gotta be yur valves tappin.

 

This same problem plagued me for nearly 2 weeks before I figured it out. My #8 cylinder had a leak in the header to flange weld. Not the gasket. Worse? It was on the bottom of the pipe. Try that one. My tick is constant from idle to redline and I know it is my stupid header. Almost impossible to take that passenger side header off. But it builds character.

 

Id say injector noise or an exhaust leak,cause my car has an exhaust leak right now and sounds like that.

Check out My Trans Am:
http://hometown.aol.com/italianknight178/index.html

 

sounds like,,an injector ,,,,or a leak,,,i will take the leak,,, you will know if an injector is faulty,,,,,you can feel it ...the injectors do make a tick,,,GET A piece of hose put it in the genaral area,,,stick it near your ear,,,you will hear it,,,real good,,,if you dont mind the grease put it in your ear,,,it works real fine,,,,i would take the leak ,,check it out,,first,,,the hose is a free item and it works

 

It sounds like your cam is not getting enough oil to it. get your oil pump checked out

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Steve
88 Firebird TBI,TH700R4 - Open Element, Cat Delete, K&N filter 14*4 element, Flowmaster Catback Exhaust, 180 Stant thermostat, Accel cap and rotor
1/4: 16.1@85.7 (Bone Stock)