http://www.thirdgen.org/techboard Carb discussion and questions. Upgrading a Third Gen carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here. en Fri, 20 Nov 2009 23:11:53 GMT vBulletin 60 http://www.thirdgen.org/techboard/images/misc/rss.jpg http://www.thirdgen.org/techboard http://www.thirdgen.org/techboard/carburetors/550221-1987-305-carb-complaint.html Fri, 20 Nov 2009 22:57:20 GMT white smoke start up and hesitation on aceleration off idle . recent purchase 1987 firebird 305 carb original engine original carb application with... white smoke start up and hesitation on aceleration off idle . recent purchase 1987 firebird 305 carb original engine original carb application with 65000miles.carb recently replaced found when engine shut off no gas looking in bowl carb from excellerator pump. took carb apart found lip seal to still be good in quadrajet . reassembled carb new seal replaced fuel pump checked choke and varied timing . no change ? this carb is power controled by ecm? seems to be dumping alot of gas start up? when replacing pump found excessive volume coming from return line which goes to tank ? at pump ? had large vacume opening filler cap of vehical , replaced still vacume ? replacing pump and timing helped hesitation but still there start up smoke intermitent please open to sugestions im old school qjet guy when no pump shot check ball below pump not seated , not same in this qjet??? ]]> Carburetors retrovet http://www.thirdgen.org/techboard/carburetors/550221-1987-305-carb-complaint.html http://www.thirdgen.org/techboard/carburetors/550030-iroc-z-six-pack.html Thu, 19 Nov 2009 01:06:59 GMT I wanna do something a little different with my camaro's motor so im think of doin a 3x2 (six pack) carb setup. The motor as of now just has a 6,000 rpm cam but im getting RHS pro action heads and now im thinking of adding a 3x2 setup to it.

What do u guys think? Does a 3x2 setup have better fuel delivery because of its design? Will it support higher rpms? Is it too many cfms for a 60 over 350? ]]> Carburetors Josh R http://www.thirdgen.org/techboard/carburetors/550030-iroc-z-six-pack.html http://www.thirdgen.org/techboard/carburetors/550029-need-advice-my-carb.html Thu, 19 Nov 2009 01:04:59 GMT alright so far what i have is a 350 4bolt main with and edelbrock torker cam (.488 lift) from my previous build. im taking off my WP sportsman II... alright so far what i have is a 350 4bolt main with and edelbrock torker cam (.488 lift) from my previous build. im taking off my WP sportsman II heads and putting in vortech heads. The vortech stock from what ive read only accept around .430 lift so im thinking ill have to get the valve guides machined down so i can keep my cam unless anyone has a easier way of getting these heads to accept more lift? Im putting an edelbrock preformer RPM intake on along with a 670cfm holley carb with vac secondaries and an electric choke if i can find one for a decent price. this is a conversion build from my tpi setup and ive never worked carbs before so any opinions or advice would be nice, thanks. ]]> Carburetors Prostreet87Z http://www.thirdgen.org/techboard/carburetors/550029-need-advice-my-carb.html http://www.thirdgen.org/techboard/carburetors/549983-600cfm-too-small.html Wed, 18 Nov 2009 19:25:37 GMT I have a 600cfm edelbrock performer carb 4 barrel, im putting nitrous on my camaro next month, 100 shot, maybe 150, is the carb i have good enough?... I have a 600cfm edelbrock performer carb 4 barrel, im putting nitrous on my camaro next month, 100 shot, maybe 150, is the carb i have good enough? or will it hamper the nitrous or anything like that? ]]> Carburetors 10secondhopeful http://www.thirdgen.org/techboard/carburetors/549983-600cfm-too-small.html http://www.thirdgen.org/techboard/carburetors/549882-just-me-does-edelbrock.html Tue, 17 Nov 2009 22:33:12 GMT Hey guys I have a edelbrock 1406 600cfm manual choke carb right now, I have had hell trying to keep my freshly rebuilt 350 running, (crnk turned... Hey guys I have a edelbrock 1406 600cfm manual choke carb right now, I have had hell trying to keep my freshly rebuilt 350 running, (crnk turned .010, bored .030, 9.0:1 @ 72cc pistons, timing chain, all new gaskets, mech edelbrock fuel pump, carb gas tank line modification)

This is on a 1978 chevy 350 out of a truck, It has 883 heads with new valves and seats, performer RPM intake, 700r4 (lockup and tv corector bracket).

The car is a 1986 Iroc-Z,
I plan on putting in a set of edelbrock performer rpm 64cc heads, and a thumper cam (279/297 .498,.483).

This car will be daily driven in the summer, I hope for 325 rwhp. Or around that.... The cam in the car right now is a summit 262/272 .420.442...

This car will be daily driven in the summer, it sits in a heated garage in the winter, I will drive it some in the spring so electric choke is a must for me. ]]> Carburetors http://www.thirdgen.org/techboard/carburetors/549882-just-me-does-edelbrock.html http://www.thirdgen.org/techboard/carburetors/549829-carter-afb.html Tue, 17 Nov 2009 11:43:56 GMT hey i have a 305 with mild cam and elderbrock performer with a carter afb think its a 650 and i cant seem to get it tunned in it will only run at hi... hey i have a 305 with mild cam and elderbrock performer with a carter afb think its a 650 and i cant seem to get it tunned in it will only run at hi rpms wont stay running anything under 1000 rpm and when i adjust the two screws it dosent make much of a differents i found a used holly carb and going to get it unless somone has any idea what else it could be or if u have any suggestions ]]> Carburetors tgill http://www.thirdgen.org/techboard/carburetors/549829-carter-afb.html http://www.thirdgen.org/techboard/carburetors/549769-purpose-fuel-cell.html Mon, 16 Nov 2009 23:33:19 GMT I am considering putting in one of the plastic 15 gallon fuel cells. What are the advantages of the fuel cell and how much of a pain would it be to... I am considering putting in one of the plastic 15 gallon fuel cells. What are the advantages of the fuel cell and how much of a pain would it be to install in stock spot?

Thanks, Chas ]]> Carburetors chas0218 http://www.thirdgen.org/techboard/carburetors/549769-purpose-fuel-cell.html http://www.thirdgen.org/techboard/carburetors/549737-cables.html Mon, 16 Nov 2009 18:41:24 GMT i got rid of my tpi and went to a holly but my throttle and tv cable wont work, so i am going to get new stuff. anybody have suggestions? or a way... i got rid of my tpi and went to a holly but my throttle and tv cable wont work, so i am going to get new stuff.
anybody have suggestions?
or a way to make it work? ]]> Carburetors kevz28carter http://www.thirdgen.org/techboard/carburetors/549737-cables.html http://www.thirdgen.org/techboard/carburetors/549725-84-z28-codes.html Mon, 16 Nov 2009 17:51:34 GMT Guys My BNL has a stock 84 Z28 auto,carb. SES light is coming on with code 15, 23 and 44 im not sure what causes low temp on CTS, but if i replace... Guys
My BNL has a stock 84 Z28 auto,carb. SES light is coming on with code 15, 23 and 44
im not sure what causes low temp on CTS, but if i replace sensor, code 15 should go away?
code 23, Low temperature at manifold air temperature sensor not exactly sure what to check here.
code 44, O2 sensor lean. if i replace O2 would that take care of that code?
If anyone can give any suggestions on how to trouble shoot, i would appreicate it. thanks ]]> Carburetors TOM305T/A http://www.thirdgen.org/techboard/carburetors/549725-84-z28-codes.html http://www.thirdgen.org/techboard/carburetors/549709-lubricating-throttle-shafts.html Mon, 16 Nov 2009 15:37:28 GMT Would it be at all beneficial to lubricate these? Harden steel on aluminum doesn't seem like a long lasting relationship to me. i have 1 of 3 things that i could possibly uses or that i think would work. lanthanum grease, Mobile one synthetic grease, and polyurethane bushing grease which i doubt would work because its pretty sticky. i want to see if anyone had some input or could elaborate on this ]]> Carburetors FueledSoul http://www.thirdgen.org/techboard/carburetors/549709-lubricating-throttle-shafts.html http://www.thirdgen.org/techboard/carburetors/549679-what-holley-4780-worth.html Mon, 16 Nov 2009 03:50:39 GMT I have an old holley 4780 carb layin round that needs rebuilt. Its an 800 cfm with the manual choke and is a lil big for any thing i have. Was... I have an old holley 4780 carb layin round that needs rebuilt. Its an 800 cfm with the manual choke and is a lil big for any thing i have. Was thinkin bout selling it but dont want to sell it if its not worth much. About wat does one of these that is complete but needs rebuilt go for. Any help apreciated. ]]> Carburetors log93pow http://www.thirdgen.org/techboard/carburetors/549679-what-holley-4780-worth.html http://www.thirdgen.org/techboard/carburetors/549657-quadrajet-cfm-id.html Mon, 16 Nov 2009 01:08:13 GMT Is there a rule of thumb in determining what size a Quadrajet is?

I have one that i've had for some years. It's a 17085239. Came off a 350 1/2 ton truck, 1985..

Has all sorts of markings but I don't know what is important and what is not. Curious if it's at least 750 cfm, or larger..?



-- Joe ]]> Carburetors anesthes http://www.thirdgen.org/techboard/carburetors/549657-quadrajet-cfm-id.html http://www.thirdgen.org/techboard/carburetors/549574-500hc-idle.html Sun, 15 Nov 2009 04:41:03 GMT yup, california doesnt want me to drive... the 2500 rpm test showed 90 hc but its super rich on idle. 305 quadrajet, anybody have any tips, im trying... yup, california doesnt want me to drive... the 2500 rpm test showed 90 hc but its super rich on idle. 305 quadrajet, anybody have any tips, im trying to pass smog, thanks:mad: ]]> Carburetors AlwaysSidewayz http://www.thirdgen.org/techboard/carburetors/549574-500hc-idle.html http://www.thirdgen.org/techboard/carburetors/549555-thunder-series-800-cfm.html Sun, 15 Nov 2009 02:19:24 GMT anyone run one of these carbs? edelbrock 800 cfm thunder series? if so what are your opinions of it? anyone run one of these carbs? edelbrock 800 cfm thunder series? if so what are your opinions of it? ]]> Carburetors Badass355ciz28 http://www.thirdgen.org/techboard/carburetors/549555-thunder-series-800-cfm.html http://www.thirdgen.org/techboard/carburetors/549342-help-new-holley-carb.html Thu, 12 Nov 2009 00:21:56 GMT My freind just got a 600 cfm Holley carb and a new intake. for his 84 z-28 L69. I told him he needed a new distributor for the new carb and he... My freind just got a 600 cfm Holley carb and a new intake. for his 84 z-28 L69. I told him he needed a new distributor for the new carb and he doesn't believe me. I tried to find info about getting rid of the CC system but I couldnt find much. what would be a good cheap dizzy to go with the carb that will work and is anything additional needed for the new carb to work? thanks.

oh, the engine is pretty stock. he is also getting new heads right now but I think they are more of just replacement heads insteand of performance heads. ]]> Carburetors aciddrop2804 http://www.thirdgen.org/techboard/carburetors/549342-help-new-holley-carb.html