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View Poll Results: which carb for boys truck | |||
rochester 2 barrel |
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8 | 14.29% |
holley 650 double pumper |
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7 | 12.50% |
edelbrock 500 vacum sec |
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11 | 19.64% |
edelbrock 600 vacum sec |
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30 | 53.57% |
Voters: 56. You may not vote on this poll |
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#1 |
Senior Member
Join Date: Mar 2004
Location: Nebraska
Posts: 583
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carb for the boys truck?
hey guys,
My boy who just turned 16 is driving now. I have been fixing this truck up for him. The little Rochester 2 barrel that is on a 305 CID started acting up real bad. It dies and barley starts sometimes and is a total dog. I have a Holley 650 and performer intake. I know this is a lot more power and i hope he will be responsible. My first question is am i crazy, I mean i want my boy to enjoy driving like i did. I really want to put an edelbrock carb on it for him when i can get one. They are way better on fuel and are more drivable. My other question is this have any of you ran the 500 cfm carbs.. my calculator says 558 is the biggest i should run on the 305. i was planning on a 600 cfm but the calculator suggest it as being to big. |
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#2 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: carb for the boys truck?
Any vacuum secondary 600-650 carb will be fine. The nice thing about vacuum secondaries is that they won't provide more air than the engine asks for. The primary venturies are still small enough to have good throttle response and driveability.
I would make a quick check of timing, etc. before jumping right on the carb as the problem if you haven't already done so. The "classic" Holleys are very tunable, they just typically don't come tuned as close out of the box as the Edelbrocks and are comparatively harder to adjust vacuum secondary opening point and jetting. The Holley Street Avenger line is an attempt to make that better. With a little time spent reading plugs and doing some tuning - especially of the vacuum secondary spring - he'll have a nice running truck. Nice looking truck - he's a lucky kid to have such a nice ride and a great Dad that's helping him get it together! |
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#3 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: carb for the boys truck?
I know my dad had a 305 in a 79 C10 once. He had hopped it up a little with a (heres a bunch of names from the past: ) Holley 450 CFM Economizer carb, an Edelbrock SP2P intake, and dual exhaust with Royal Scott glasspacks. He said that was the best running engine he ever had. Not the most powerful one, but very responsive and fun to drive. He had 50 series tires on the back, and he said with a 2.76 rear end, that 305 would just smoke the tires right off.
Thats what he said, I'm just sharing my 2 cents worth. Last edited by JAKES 68GMC; 07-19-2007 at 11:23 AM. |
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#4 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: carb for the boys truck?
Whether it's a 400 horse V-8 or a 120 horse 4 banger, any and ALL 16 year old males will try to see how fast their vehicle will go. I've done it, but I only had a 250 straight six and 3 speed
![]() Hopefully he'll be careful and responsible. Paying for his own insurance and gas are always a step in the right direction ![]()
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#5 |
Senior Member
![]() Join Date: Jan 2005
Location: Claremore, OK 74017
Posts: 2,640
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Re: carb for the boys truck?
Agreed, all boys will do something. I put an Edelbrock 1406 on top of the 350 with headers in my son's 78 Camaro and so far all that he has done is dented up the passenger side a little while showing off coming into the gravel driveway - bouncing off a couple small trees - which he will pay for. Sometimes it is better to get them through this while they are young rather than them holding it in and then really letting it out later. I know they will enjoy it more if they like what they are driving. Sometimes it is just the knowledge that they can rev it up a bit, while in park, will keep them calm the rest of the time.
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68 Short Stepside C-10 69 SWB C-10 70 Flatbed C-20 70 LWB C-20 BB402 70 LWB C-10 CST 70 LWB C-10 CST 71 Short Stepside Cheyenne C-10 72 LWB C-10 72 Blazer 4x4 4spd 95 Jeep Cherokee 4x4 |
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#6 |
Too many trucks? Nah...
Join Date: Mar 2002
Location: SW Washington State
Posts: 154
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Re: carb for the boys truck?
I've run a number of 305s with that craptastic rochester 2bbl in my Impalas/Caprices. They may be rather anemic but will still put out enough power to get you into a lot of trouble. I rolled my first one at 16 racing some friends.
![]() I have a Edelbrock 1406 on a '69 307 that's been mildly built, it makes more than enough power to enjoy. |
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#7 |
Senior Member
Join Date: Mar 2004
Location: Nebraska
Posts: 583
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Re: carb for the boys truck?
those are the responses i was hoping for. as far as timing no i did not check that. i am pretty sure its not that just the way it acts. the hard starting is the main thing. it acts and smells flooded when it wont start. to get it to start you just wait until shes cooled down a while and she will fire up. and its been dieing at low rpm or idle. at highway speed she purs like a kitten. besides the boy wants to do it and i am letting him do the majority of the work. it could be a fuel pump but i would love to see him do this mostly himself and a fuel pump is an easy fix anyway. i have most everything to hop it up. carb, intake, hei comp ignition, and 1.6: 1 rockers.
well should i just keep the 650 holley or put a 500 or 600 edelbrock. its more for the boys concerns. the holley is a double pumper. the edelbrock would be a vacum sedoundary and worth the money in fuel. |
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#8 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: carb for the boys truck?
Sounds like a vacuum leak more than anything; I'd be SURE of the timing and then take a look around with a can of carb cleaner
![]() With the 650 being a double-pumper, it's just too much for a 305 IMHO. Double-pumpers are race carbs, not street carbs ![]() Last edited by Billla; 07-19-2007 at 01:37 PM. |
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#9 |
Registered User
Join Date: Feb 2007
Location: Central Florida
Posts: 166
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Re: carb for the boys truck?
If you find it is in fact the old carb that is bad, I suggest using the Holley since you already have it and that would save some $$$ on not buying an Edelbrock, unless you don't mind spending some extra cash on a new carb.
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#10 |
Senior Member
Join Date: Nov 2005
Location: AL
Posts: 2,519
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Re: carb for the boys truck?
I went through 2 1406 edelbrokes and one holley 670 street avenger and they all suck. I rebuilt my quadrajet and it runs 5 times better than the others. JM2C
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#11 |
Dork For Days
Join Date: Aug 2005
Location: Dallas
Posts: 407
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Re: carb for the boys truck?
As for worries about too much power - don't. A 305 in that truck won't be too hairy to handle. Nor will it win many races. It should be a good starter truck for him!
As for carb size - The calculator is based on 100% volumetric efficiency (VE) and is notoriuos for receommending on the small side. A 600 should be perfect for an average 305. I wouldn;t waste the money on a new carb. Use the one you've got. Hey, at least Holley's are easy to work on!
__________________
1972 C20, 402/700R4 - My first classic truck, bought in September 2005. 85% transformed from "Farm" to "Cool" status! ![]() 1970 Dodge Challenger 440, 4sp (my other toy) 12.67 @ 117 MPH, with a pathetic 2.022 60' 2007 Dodge Charger SRT-8 2008 Cadillac CTS All-American garage, baby! |
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#12 |
Senior Member
Join Date: Mar 2004
Location: Nebraska
Posts: 583
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Re: carb for the boys truck?
thanks guys for all your advice. it is all apreciated. i will keep watching the poles just out of curosity. i will probably run the holley for a while we will see how he likes the gas milage..
hey mrc1 i could not help from laughing. your avatar says gute fahrt! dont tell me that stands for good fart! ![]() ![]() ![]() ![]() |
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#13 |
Real Projects never die
Join Date: Jan 2007
Location: Lawrence, kansas
Posts: 1,508
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Re: carb for the boys truck?
quadrajet baby, all the way, unless you need something bigger, than a 750 double pumper, or if your like my dad, get two 750 double pumpers haha
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Ill put it this way, ive got a few lawn ornaments ![]() ![]() My name tag says Ryan KansasTwister On other forums
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#14 | |
Official Site Guitar Shredder
Join Date: May 2006
Location: Oz
Posts: 3,955
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Re: carb for the boys truck?
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#15 |
HERE.......Somewhere
Join Date: Oct 2006
Location: Birmingham AL
Posts: 2,488
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Re: carb for the boys truck?
heck im only 18 and blew the engine in less than 4 weeks, I paid $1,412 for the engine to be rebuilt and just yesterday put on a new starter. My uncle fixed the 4 barrel by doing something to it and it doesnt have the get up and go it used to have but its a little better on gas. when I got the truck back I tried to melt the tires but that didnt work it instead cut off. I wanted get some bodywork done this summer well my green went into that itsy bitsy 350 hoping to get a 454 or better later on.
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Current rides: 2013 Hyundai elantra gt DD 1995 camaro my first crush lmao Was: 1970 ![]() ![]() Classics make it possible! |
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#16 |
HERE.......Somewhere
Join Date: Oct 2006
Location: Birmingham AL
Posts: 2,488
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Re: carb for the boys truck?
uhh were do you get the quadrajet at????
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Current rides: 2013 Hyundai elantra gt DD 1995 camaro my first crush lmao Was: 1970 ![]() ![]() Classics make it possible! |
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#17 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: carb for the boys truck?
If you make him do the work and pay for it, he will learn more about working on trucks and the value of a dollar. Besides, a 4bbl. 305 won't be too much for him in that truck IMO.
Thats what my dad did for me, I told him I wanted a souped 350 in my truck and he told me "You pay for it, you do all the work you can, and I'll help with what you can't do." So far its going pretty good, he doesn't have a penny in the swap so far and hasn't helped me too much, either. Last edited by JAKES 68GMC; 07-19-2007 at 09:49 PM. |
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#18 |
Alright Alright Alright
Join Date: Mar 2004
Location: Midland, Texas
Posts: 1,672
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Re: carb for the boys truck?
you can find a qjet in a junkyard or at an autoparts store for 100-150. another vote for the quadrajet. it will put out the perfect flow for that engine and get better milage than the other carbs. gm put them on there from the factory for a reason.
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1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies |
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#19 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: carb for the boys truck?
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#20 |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,673
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Re: carb for the boys truck?
FWIW, I've got a 1405 on my 250 and it ran fantastic right out of the box. I tried rejetting it leaner for my fewer cubes, but the engine really likes the carb the way it is.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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#21 |
Registered User
Join Date: Apr 2004
Location: Salem, OR
Posts: 127
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Re: carb for the boys truck?
Quadrajets are nice... I have rebuilt tons of them. But of the tons I've set out to rebuild, I'd say maybe 1/3 of them were really good "basic" rebuild candidates. Float bowl leaks and throttle shaft vac leaks are the scourge of a QJet tuner and God help a noob who tries to set one up that's simply worn out. Yes, you can fix the float bowl, yes, you can bush the throttle shaft, but IMHO, if you're just working with a run-of-the-mill street truck, it's just easier to buy a 600 cfm Edelbrock and be done with it.
I'm not saying that the Quadrajet wasn't a good carb, it was a very nice design and if you can find a good one, it's a great mix of power and economy. But they're getting reeeeeal old and let's face facts: they just weren't built with longevity in mind.
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Josh '70 Custom Camper / 20 |
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#22 | |
Senior Member
![]() Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,873
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Re: carb for the boys truck?
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
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#23 |
Strange Cousin From The West..
Join Date: Jul 2007
Location: Walla Walla, Wa
Posts: 248
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Re: carb for the boys truck?
The truck I just got ('81 C-10, wrong era, yes, but similar setup) has a 305 with a 500 cfm Carter AFB (same thing as the Edelbrock). So far I have no issues with it, the engine is a stocker out of another 80's truck with an edelbrock performer manifold (and a Pete-Jackson noisy Gear-Drive
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#24 |
Senior Member
Join Date: Apr 2007
Location: East Texas
Posts: 549
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Re: carb for the boys truck?
my buddie has a 76 chevy lwb half ton with a 305, and a 2bbl,and there is no such thing as spinning the tires in that truck
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Justin 1970 c/10 short wide bed WTT 1970 chevy front end for 67/68 chevy front end WTT 2 15x10 american racing outlaw 2 wheels for 2 of the same in a 15x7 or 15x8
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#25 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: carb for the boys truck?
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