carb tune, where too start

[grumpyvette]

Id start by checking for vacuum leaks and verifying the timing curve
Id start by dropping or raiseing the fuel pressure to 5.5 lbs and verifying your getting a minimum of a 1/2 gallon a minute unrestricted flow
Id start at all four jets #70
Id install a NEW power valve and ID buy several,if your carb uses them, so I could play/exchange/test

start here, theres no sence in guessing
http://www.themotorbookstore.com/holley-carburetors.html
http://www.themotorbookstore.com/motuhocavo2.html
http://www.themotorbookstore.com/holley1.html
http://www.bob2000.com/carb.htm
http://www.mortec.com/carbtip1.htm
http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY-36-181&N=700+115&autoview=sku
http://www.professionalequipment.co...hermometer-501-ds-42545/infrared-thermometer/
http://www.centuryperformance.com/vacuum.asp
http://www.carcraft.com/techarticles/carb_tuning/
heres where
a infared non-contact thermometer helps diagnose mixture problems very quickly, but youll need one that reads into the 1400F range for the headers for quick diagnoses
http://www.professionalequipment.com/xq/ASP/ProductID.3461/id.22/subID.177/qx/default.htm
temperature range from -58 to 1832°F
I use this one :grin: (above) and youll need to learn how to read plugs (this may help)
http://www.chevytalk.org/threads/showfla...rue#Post1448415
heres A/F
http://www.rbracing-rsr.com/rsrgauge.htm
http://www.mummbrothers.com/SRF_Stuff/Secrets/Driveline/Air_Fuel.htm
http://www.airfuelmeter.com/english/
http://www.innovatemotorsports.com/products/lm1.php
http://thedynoshop.net/prod01.htm
http://www.dawesdevices.com/airfuelmeter.html
http://fastrides.com/articles/DoItYourself_AirFuelRatio_Gauge.html
http://www.fuelairspark.com/Products/Information/AirFuelMeter.asp
http://www.3barracing.com/product_3.htm

a few places to look for plug/ignition info
http://auto.howstuffworks.com/ignition-system.htm
http://www.ngksparkplugs.com/techinfo/spark_plugs/techtips.asp?nav=31000&country=
http://www.gofastzone.com/techtips/sparkplugs/sparkplugs.htm
http://www.acdelco.com/html/pi_plugs_ident.htm
http://www.autolite.com/framer.cgi?page=http://www.autolite.com/products/racing.htm
http://members.uia.net/pkelley2/sparkplugreading.html
http://www.atlanticjetsports.com/_techtalk/00000005.htm
http://www.strappe.com/plugs.html
http://www.babcox.com/editorial/cm/cm59910.htm
http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf
http://www.nightrider.com/biketech/spkplghnbook.htm
http://www.tsrsoftware.com/sparkplug.htm
http://www.gnttype.org/techarea/engine/plugs.html
http://www.dansmc.com/sparkplugs1.htm
http://www.ngksparkplugs.com/techinfo/spark_plugs/overviewp2.asp
http://www.pajjakid.com/ubipa/sparkplugs.htm
http://www.edelbrock.com/automotive/sparkplugs.html
http://www.bullittarchive.com/Maintenance/Sparkplugoverview/
http://www.powerarc.com/sparkplug.htm
http://www.carcraft.com/techarticles/64378/
http://www.wakularacing.com/TechnicalInfo.htm
http://www.geocities.com/MotorCity/Flats/3877/spark.html

http://www.rmlautomotive.com/ignition.html
http://www.bgsoflex.com/auto.html
http://ourworld.compuserve.com/homepages/JET_AV8R/Vision/Ignition/CDI.HTML
http://www.howstuffworks.com/ignition-system.htm
http://auto.howstuffworks.com/ignition-system1.htm
http://www.familycar.com/Classroom/ignition.htm
http://www.motocross.com/motoprof/moto/secontent/seign/ignprin/ignprin.htm
http://www.northwestautorepair.com/ignitionsystem.htm
http://www.boyleworks.com/ta400/psp/distcurve.html
http://www.chevytalk.com/tech/index.html

heres other options
http://www.davessmallbodyheis.com/

http://www.msdignition.com/
http://www.proformparts.com/catalog/distributors_GM.html
http://www.atlanticspeed.com/store/MSD Chevrolet Distributors.asp
http://www.holley.com/HiOctn/ProdLine/Products/IS/ISD/ISD.html
www.performancedistributors.com/gmdui.htm

Spark plug /ignition info
http://www.edelbrock.com/automotive/sparkplugs.html
http://www.ngksparkplugs.com/apps/car_truck_suv/default.asp?nav=60000&country=US
http://www.strappe.com/plugs.html
http://www.applink.net/cct/tips/plugwires.html

http://www.acdelco.com/html/pi_plugs_ident.htm
http://www.atlanticjetsports.com/_techtalk/00000005.htm
http://www.ngkspark.com.au/spark_plug_cross_ref_chart_index3.htm

http://www.strappe.com/plugs.html
http://www.babcox.com/editorial/cm/cm59910.htm
http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf
http://www.eric-gorr.com/techarticles/sparkplugs.html
http://www.gnttype.org/techarea/engine/plugs.html

http://www.tsrsoftware.com/sparkplug.htm
http://www.racinghelp.com/read_spark_plugs.html
http://www.ngksparkplugs.com/techinfo/spark_plugs/overviewp2.asp
http://www.gofastzone.com/techtips/Spark...20Reference.htm
http://www.geocities.com/zgarage2001/adv...01/advance.html
http://www.hotrod.com/techarticles/43300...harticles/43300
http://www.centuryperformance.com/vacuum....com/vacuum.asp
http://www.custompistols.com/cars/articl...tion_timing.htm
http://chevyhiperformance.com/howto/4567...com/howto/45673
http://www.lmengines.com/Ignition_Timing...tion_Timing.htm
http://www.73-87.com/garage/hei.htm]http.../garage/hei.htm


http://www.bgsoflex.com/auto.html
OPTISPARK info
http://www.gmhightechperformance.com/tech/0310htp_optispark/
http://www.charm.net/~mchaney/optisprk/optisprk.htm
http://www.fierolt1.com/lt1_95_up_OptiReplace.htm
http://www.noid.org/~muttvette/opti.html
http://www.gulicks.com/vette/projects/opti/index.html
http://www.houston-f-body.org/tech/optispark/

http://www.dynotech-eng.com/dynaspark.htm
http://www.corvetteclinicinc.com
http://www.corvettefever.com/howto/16758

 

[MikeMc71]

Good info...someone needs to sticky this!!!