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View Poll Results: which carb? | |||
edelbrock 600 cfm elec. choke |
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24 | 72.73% |
edelbrock 750 cfm elec. choke |
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3 | 9.09% |
holley carb (specify which in response) |
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3 | 9.09% |
other carb (specify in response) |
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3 | 9.09% |
Voters: 33. You may not vote on this poll |
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#1 |
Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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need opinion on which carb to use
im going to use a 600 cfm (1406) or a 750 cfm(1411) edelbrock on my truck with the performer rpm intake i got. someone said using a 750 will be too much of a carb for my mostly stock 350 with hei and headers. will a 600 give me much better gas mileage? later down the road i want to build a nice 383 out of my 350. but for now is the 1411 too much of a carb. its a wopping 15 dollars of difference for 150 cfm... but how much of that money i am going to lose on gas with that 750....... NEED OPINIONS
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70 longbed 496/th400/Ford 9" |
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#2 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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The 750 will most likley be too much carb for your basically stock 350. 600cfm is fine for up to 350hp no problem.
The Edelbrock 1406 is a great daily driver carb. It is very easy for a beginner to install and tune them and have a good running ride. The jetting should be pretty close, if not dead on, out of the box for a stock or slightly modded 350. I have a few mods on mine so i had to jet it 6% richer to get it to run properly.
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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#3 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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600 Edelbrock, no question
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I'm on the Instagram- @Gearhead_Kevin |
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#4 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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the 600 elde will do just fine on your mostly stock 350. the 700 will perform jsut fine also, due to the fact that the design of the elde carb is based on the old carter afb design. this design uses a secondary air valve to control fuel metering when the secondaries open so in other words it is gonna be good for up to 600CFM. The factory jetting should be close but may need some tweaking. It will run good out of the box. as a side note if you assume 100% volumetric eficiency of a 350 motor (unlikely except for a small window in the RPM band) you would have to turn 6418.2857142857142857142857142857
RPM to pull 600 CFM through the motor. I shift my mill at 6700 but I Damn sure dont run it there all the time. Go with the eldebrock 600 with the electric or go 750 it wont over carb due to the air controlled secondaries, but the venturi size is bigger so you will have a loss of power on the lower end compared with the 600, but you probably cant tell with out test equip. Why dont you use on of the best production carb made? Quadrajet.....***** to tune and set up but when you do......cruise all day.... race all night nothin like beer cans for secondaries.
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The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? |
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#5 |
Registered User
Join Date: Nov 2003
Location: New Albany IN.
Posts: 3
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I agree with the 600, you should also have better throttle response.
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If its worth doing, its worth doing right. |
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#6 |
Senior Member
![]() Join Date: Apr 2003
Location: Howard, Kansas USA
Posts: 1,997
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the 600 is the way to go. I have a 406 that has flat top hyper pistons, 202 valves, rough idle cam, accel distributor/wires/supercoil and some other goodies, and have a 750 and it is almost too much.
DAvid
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1969 K10 Custom 10 1997 Z71 2006 Volkswagen Jetta TDI 2006 King Ranch 1980 Wife |
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#7 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
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1406 here. I would take it any day over a Quadra Suck, because they are so much easier to adjust and work on, also I think the 750 would be too much for the basicly stock 350, also I think it will work just fine for your 383 conversion also!
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#8 |
Senior Member
Join Date: Jun 2003
Location: Westminster, CO
Posts: 3,071
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I bought the truck this way. 383 Stroker top with a 600 electric choke Edelbrock. It runs great and is a very NICE carb!
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Alex 1971 Lil' Red 350 SBC 700R4 |
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#9 |
Account Suspended
Join Date: Jan 2003
Location: Shadow of Lambeau Field
Posts: 5,597
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Yep, as everyone already stated, go with a 600 CFM.
I have a Holly 750 on my 350 because I have 10:1 compression flat top pistons, 87-95 300 hourse heads that are ported with hardened seats and valves, a low rise Weland intake, Hooker headers and 3" exhaust. The cam is a 268/280 Comp cam. The 750 Holly is WAYYYY too much of a carb for this set-up. |
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#10 |
Registered User
Join Date: Aug 2002
Location: Muskogee, Oklahoma
Posts: 2,914
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If you enjoy constantly adusting floats and flooding at stoplights and blown powervalves go with a Holley(I have owned several 600's and a 650 spreadbore and a couple of 750 vac. secondaries and they all do this
![]() Or you can buy a 600 Edelbrock and stick it on your motor right out of the box and never have to adjust anything but the idle. I run a 600 manual choke Edelbrock on a 350/mild cam and headers and I love it. I HATE HOLLEYS!!! |
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#11 |
THE QUICKER FIXERUPER
Join Date: Jul 2002
Location: Ok
Posts: 615
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I say go with an 600 Holley I had one on my engine when I installed it and it ran great dident give me any troubles, after i made some changes I put an edelbrock on it and hated it, it needed retuned evrey 2 weeks I now have a holley street avenger and love it. Im sticking with holleys from now on.
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#12 |
Registered User
Join Date: Apr 2001
Location: Lincoln, Nebraska
Posts: 587
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Everyone has their own opinion on this one. I have owned both edelbrocks and holleys. If it is more of a daily driver, go with the edelbrock - they require less periodic tuning. If it is more of a street/ strip truck go with a holley, it will make a little more power, but they require a lot more tuning. I wanna try a speed demon on my 406. Anyone ever owned one or had good luck with them?
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67 Chevy SWB - goal of a 1,000 hp weekend cruiser |
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#13 |
Registered User
Join Date: Nov 2003
Location: st. louis area
Posts: 1,551
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out of the 2 600 is way to go. If it were me Id use either a Q-jet ( cause I like em ) or a Holley street avenger 570 on a stock 350. To much gas really isnt the issue with the 750, its to much air. that 350 wont move enough air to need a 750 CFM till well over 6000 RPMs.
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75 GMC C-15 short/step factory 454, lowered |
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#14 |
Registered User
![]() Join Date: Sep 2003
Location: Waterloo, IA
Posts: 1,147
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I prefer Holleys myself, but I like tinkering on my vehicles too! Like Oborny71 said, the edelbrock is the low maint. daily driver option, and the Holley is the power option.
There's nothin' like the sound of a well tuned motor! ![]()
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'72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958 |
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#15 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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Fuel Injection............ so much easier to work on.
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The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? |
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#16 |
Registered User
Join Date: Nov 2002
Location: Bellevue, WA
Posts: 1,480
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Edelbrock 600.
Thanks what I had on my 350 and now on my 305. It's a great carb, you literally don't need to tune it! Good luck!
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Brian Pal 1971 Cheyenne 10 454/th400-Undergoing a full frame off resto. 1972 Chevy short/step 2wd, 350/th350 1983 M1009 CUCV Military K5 Blazer 1981 Dodge 1 ton 4x4 dually flatbed |
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#17 | |
Vortec in the works
Join Date: Nov 2003
Location: Spring,Texas
Posts: 735
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Quote:
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68? It's all figured out untill you get it apart. Is it Sunday yet??? 68 Project 68 SWB frame off/98 Vortec with stock FI/power everything. 95 ECLB 2500 with 346,000 on the clock(the original HD) 99 Lesabre-wifes ride 08 Crew Cab LTZ-All Mine 89 SWB 5/7 drop-Son's first ride. |
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#18 |
Registered User
Join Date: Nov 2003
Location: st. louis area
Posts: 1,551
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agreed on the Qjet... I dont have one on my truck, its a 770Holley Street Avenger, been flawless. but I had a prepped Qjet on the 402 in my 73 camaro, after trieing various differant carters, Edelbrocks & Holleys. A buddy of mine had a prepped Qjet on the 400 in his Goat, and I was amazed how well it ran. so I did the same thing, that Qjet was incredible. I paid someone who know what they were doing to build the Qjet & tune it for my car. but it was worth it.
I use to be partial to Edelbrock carbs for mild street engines, but these Holley street avengers have been great, Ive had 2 570s on my 76 short/step with a mild 305 & on my 86 Elky with a lil healther 305. now on my 454 I have the 770. John
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75 GMC C-15 short/step factory 454, lowered |
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#19 |
Registered User
Join Date: Nov 2003
Location: st. louis area
Posts: 1,551
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454 with 770 Holley
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75 GMC C-15 short/step factory 454, lowered |
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#20 |
Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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carb
502HO with 850 Holley vac. sec.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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#21 |
Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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looks like a 600 edelbrock for me!!!!!! 260 bucks
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70 longbed 496/th400/Ford 9" |
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#22 |
Registered User
Join Date: Jan 2002
Location: cornville, maine
Posts: 659
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The ed 600 IS idiot proof, but I love Q-jets. They are a little more involved to tune, but once you got them, you getter better fuel mileage, and more power than the ed.
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jku Cornville, Maine 68 C10 burb 42 Willys MB 46 Dodge WF-32 1.5 ton 53 & 56 Olds' 60 Cadillac 22 Dodge Brothers |
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