View Full Version : C4 Tech/Performance


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  1. Need help adjusting my timing
  2. dopey fuel pump relay bypass question
  3. NEW PCM, car won't start
  4. 1990 Convertible Radio Issue
  5. Mobil One High Mileage 10w-30?
  6. Anyone converted an LT1 to run on ethanol?
  7. JBA Shorty Headers
  8. low voltage
  9. 87 l98 timing
  10. Need Help From the Forum Experts With Seat Adjuster Switch
  11. 400 oil pan?
  12. zz4 385
  13. '88 Clutch Master Cylinder Advice?
  14. Coilovers or suspension kit
  15. Seating the ATI Hub, do you think its seated?
  16. speedometer reads 0, isnt sensor
  17. TPIS intake and valve adjusment info
  18. will not run, fuel filter?
  19. water pump drive seal in timing cover
  20. C4 Posi
  21. AT Line pressure gage
  22. Mystery Leak '90 L98
  23. Wanted 85 Shorty Headers!!!!
  24. Digital Dash Interchangeability
  25. ABS Pump not cycling...
  26. Faulty EGR = serious problem or breakdown?
  27. Worn Ball Joints
  28. Name that Bolt/Stud??
  29. LT1 oil cooler
  30. ball joint dust boots
  31. 92 c4 front end jack stand location
  32. Replacement connectors...source
  33. Door lock issues...Used my fsm but still stumped? Please Help!!!
  34. Black Smoke
  35. DRM coilover over stock sale
  36. Long Tube Headers LT1, Where do I find?
  37. Pop and Jerk from my rear dif
  38. 90 coupe has issues running for over 30 seconds
  39. 89 steering wheel on a 94 steering column
  40. best tpi runners and baseplate?
  41. 86 ABS removal anyone done it.Results?
  42. Refinishing interior Dulso pieces
  43. 93 LT1 cold start issue
  44. Stock height
  45. Adjustable Fuel Pressure Regulator
  46. Bad Throttle Response
  47. Replace Steel Brake Lines- ABS C4
  48. True dual exhaust =EGR problem?
  49. steering wheel removal
  50. 94 won't start
  51. Digital speedometer quits after a few seconds
  52. Tranny? lost 2nd and OD in my 93A4
  53. Tune Up Question
  54. ODBII O2 sims
  55. 87 Anti-loc light
  56. No Clutch!!!!
  57. Rear differential # spec.
  58. Hsr
  59. Front wheel bearings for 85
  60. Do You "Burp" Your New Wires??
  61. TPI Bolt Replacement
  62. Cam too tame? Weak springs? opinions please
  63. code 33
  64. What Headers Will Work with My Heads?
  65. Hard Brake Pedal - Power Booster or ?
  66. Hard starting, IAC location?
  67. Exhaust Advice Needed...
  68. Squaking front leafspring?
  69. Need more help with my 1989 that sat for 4 years
  70. Extremely urgent! Pass. Window won't come up
  71. Torque for spark plugs?
  72. Intake Upgrade question
  73. New Push Rod Question 1984
  74. Mods advise
  75. Upper intake swap
  76. Transmission swap thread
  77. Wire Installation: "Burping"??
  78. For those who were intrested in my build....pic's!.
  79. Fog Light Green Wire?
  80. rear differential carrier bushing removal
  81. new 427ci ... P/S failure
  82. Best place to get 1-7/8 headers or 2" ?
  83. 89 HVAC Blower not working
  84. Need some advice on parts to buy!
  85. Caliper Change required?
  86. Should I grease new suspension bushes
  87. different intake?
  88. Northeast events
  89. zo6 style wheels for c4?
  90. Tired 4+3 (Replacement Options)
  91. Sell the 1989?
  92. Motor mounts questions (stock 93)
  93. Yukon gears ??
  94. Weight of a door
  95. removing rear shock in an 88 - help please..
  96. Tools?
  97. 92 c4 damper removal
  98. L-98 Code 30
  99. How to remove front shocks?
  100. Getting a ton of codes at once but ECM isn't bad.
  101. Opti Problem NO SUCH THING AS A STUPID ??
  102. Help--Son gunked my LT1 engine
  103. How much?
  104. Removing the EGR
  105. FinallY! Drivers Side Wires Off! But . . . . .?
  106. Shifting Pronlems, PLEASE HELP.
  107. SuperRam Gurus please check in
  108. will c5 wheels fit a c4
  109. 2 vs 4 bolt Y-Pipes...
  110. Speedo don't work?
  111. crossfire idles 1700 ??
  112. Headlights close slow and erratically when car on
  113. 1994 coupe: Exhaust leak...need help
  114. Dual radiators behind gills?
  115. Correcting oversteer in my 94 ?
  116. Multiple threads II
  117. Multiple threads
  118. 1989 Fuel Pump Relay - need help
  119. Help with Distributor Issue
  120. Testing optispark out of car
  121. Manual Trans Capacities?
  122. Ficinjectors
  123. 1.6 rockers on a stock motor
  124. Engine / transmission removed from the bottom
  125. Shaft mount rocker arms any of you ?????
  126. Porting TPI Question
  127. Need Help finding out what these wires are for?
  128. Vacuum line diagram on L98
  129. copper colored particles in oil
  130. Car pulsates under acceleration (kicks, gets out from under me)
  131. Help Name This Part!?
  132. Q on tie rod ends
  133. pulling ltx write ups?
  134. New Alternator not working
  135. Converting spring on '84 to '85 spring rates
  136. MAF band tool?
  137. 4 spd conversion
  138. Wow I was almost fooled
  139. Rear wheel bearing replacement
  140. Priming the engine with intake on?
  141. A.I.R. Elimination
  142. 1984 Electronic antenna issues
  143. I think my EGR valve stuck open, how can I test?
  144. Yank Torque Converter fill up....
  145. AC Won't Cool After Engine Re-start
  146. Start/No start
  147. how to remove combination piston from master cylinder 1988
  148. Fluid change - differential
  149. Manual fan control switch
  150. Wierd Noise... Not sure how to even begin
  151. Green or Orange
  152. accel super ram plenum and base
  153. Do AFR heads come left/right? What Am i missing here?
  154. Relays - Fuel Pressure, Cooling Fan
  155. Help: Engine Sensor behind the starter.
  156. Need Electrical Help
  157. L-98 cast heads vs aluminum
  158. 4+3 help need diagram 87 callaway twin turbo
  159. Transmission repair DVD
  160. L-98 has a slight miss
  161. Code 33, 34 - poss ECM Question
  162. Speed Sensor Gear
  163. front wiggle
  164. Anyone in NC willing to help remove my rear wheel bearing?
  165. speedo going crazy
  166. no horn at steering wheel
  167. 96 Heater Hose Routing
  168. low rpm when idling, possible connection with AIR pump
  169. Engine Smoke
  170. Clutch problems
  171. Shiflight installation
  172. Problem when hot, still here!!!
  173. Need a new targa top, comments/suggestions?
  174. AIR pump delete question
  175. Roller Rocker Ratio mixing
  176. 86 L98 AC Blows hot/compressor off
  177. Custom Dash
  178. I need some specs please
  179. upper intake bolts
  180. At what HP do I need to update.
  181. Brake Guys...Please chime in
  182. 383 blueprint engine?
  183. Fan kit
  184. Engine/battery ground points?
  185. Dash Speakers?
  186. Engine Running Rough
  187. Fuel Tank Issue
  188. 84 interior mirror repair
  189. [Pic] Rear Coilovers, Dana 44 help.
  190. Aftermarket Clutch Disc with Sprung hub is thicker
  191. LT1 Vs LT4 Spring Difference??
  192. master brake cylinder, my front line is at the back
  193. Best intake porting kit?
  194. Engine stumble/hesitation
  195. Why can't I use an inexpensive mustang supercharger on my L98?
  196. Horn Works...Kind Of
  197. Maf spray claim
  198. Spring Break Special -- Corvettes of Dallas
  199. Crank Bearing Spacers
  200. L98 128 head valve spring replacement
  201. Aluminum head (87) valve seals
  202. going back to dino oil
  203. Battery drain:
  204. Where is the fuse panel????
  205. sb427 build which intake?
  206. Anyone Using Aftermarket Heads On An 87
  207. Transmission upgrade!!!
  208. Help!!
  209. swapping computer ?s
  210. Speedometer Gear Needed
  211. Why big brakes?
  212. Speedometer drive gear
  213. Help my friend out with this "piston to valve" clearance issue...
  214. THANKS, Jon, @ FIC & An L98 Intermittent Gremlin of Interest
  215. Is the 96's TPS Voltage Adjustable?
  216. service engine soon light
  217. Speedometer Drive Gear
  218. piston rings
  219. Just recieved my A/C delete for LTX from DRM !
  220. block hugger headers in an 88?
  221. Help: Headliner on Convertible Top 89 model
  222. Vats system
  223. Could someone verify light operation?
  224. High pitch sound and batt. light
  225. where is knock sensor? and ESC module?
  226. 1986 Climate Control delima
  227. FS: AFR 195 Eliminators
  228. Ongoing saga
  229. Zf6
  230. 86 Alternator Torque specs?
  231. Disabling factory Alarm in a '93
  232. how do i reset my change oil lite
  233. How to tell when Lifters need replacing????
  234. Starting the machine work on my 400 block. Anything else to do?
  235. High Speed Misfire Cured after 2 years
  236. Rainbow marks on opti???
  237. Want to play a game?
  238. modified lt1 intake for l98
  239. Question: Fluid Change in the 4+3
  240. 1989 C4 Sitting for Four Years
  241. Heads question
  242. Broken stud in Hub.. Help
  243. 90-96 interior in 84-89?
  244. 58mm Gasket?????
  245. Cylinder head temp sensor
  246. Do These Fit on a '85
  247. digital to analog gauges
  248. tail light lense removal
  249. leak between master cylinder and booster
  250. Overheating!!!!!