![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
|
Will this work for me?
Friend of mine gave me an Edelbrock 1407 carb he had on a shelf. Shows to be a 750 cfm carb? Will that be ok on my stock 350? How hard is it to rebuild and tune an Edelbrock?
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
![]() |
![]() |
![]() |
#2 |
Gone Fishing
Join Date: Aug 2005
Location: Fort Worth, Texas 76135
Posts: 12,361
|
Re: Will this work for me?
It will most likely be too much carb. The 600 works great on a stock sbc
__________________
68 Chevy Short Fleetside LSX Swap Under Way 3.73 posi 2.5/4 drop ![]() 2022 Hyundai Tucson Limited 2019 Chevy Traverse Redline Edition Wifes Ride Build Thread http://67-72chevytrucks.com/vboard/s...=1#post3483616 |
![]() |
![]() |
![]() |
#3 |
River life......
Join Date: Oct 2005
Location: Soldotna AK
Posts: 1,078
|
Re: Will this work for me?
I think its too much also.
__________________
|
![]() |
![]() |
![]() |
#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: Will this work for me?
What's the Quadra jet rated at.... 850?
|
![]() |
![]() |
![]() |
#5 | |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
|
Re: Will this work for me?
Quote:
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
|
![]() |
![]() |
![]() |
#6 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: Will this work for me?
The AFB carb, while not as complicated as the Quadrajet, has real small primarys,a nd big secondaries... so normal cruising is on a small set of breathers, then when you open it up, it has huge lungs.
Will it be too big? Maybe. Will you know it from the drivers seat? Probably not. |
![]() |
![]() |
![]() |
#7 |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
|
Re: Will this work for me?
It's worth rebuilding, especially for what it cost me.
![]() ![]()
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" Last edited by krue; 02-17-2006 at 12:25 AM. |
![]() |
![]() |
![]() |
#8 |
Senior Member
![]() Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,954
|
Re: Will this work for me?
I have the 1411 and it is easy to recalibrate. I've had holleys before and the edelbrock is way easier to tune. As far as the size, I'm with longhorn man... 750 cfm at wide open may be too much, but it's free.
__________________
ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ |
![]() |
![]() |
![]() |
#9 |
TOTY 2006
![]() Join Date: Dec 1999
Location: Magalia CA USA
Posts: 2,270
|
Re: Will this work for me?
I am under the impression that an engine will only take in as much air as it is build for, so an engine build for a 600cfm, will only use that much and if you run a 750cfm carb, that carb is able to provide up to 750cfm, but the engine will only use 600.
|
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Dec 2005
Location: Midland, Texas
Posts: 75
|
Re: Will this work for me?
Old mechanic once told me that it is better to over carberate than to starve the engine. Had a 780 spread bore double pumper on a stock 350. His advice was to put smaller jets in the primary and enjoy the secondary. Loved that car till I totaled it. Much younger and dumber then!!!
|
![]() |
![]() |
![]() |
#11 |
Registered User
Join Date: Oct 2005
Location: N Texas
Posts: 727
|
Re: Will this work for me?
Seems like what John and Joey are saying sounds familiar, but it's been a long time since I've messed with carbs. I have one I need to build and swap too.
__________________
67 C10 Shortbed 327 05 F150 4x4 NO APPOLOGIES ![]() 02 Xpress X19 02 Yamaha VMax 150 www.xpressboats.com Nothing says 'poor craftmanship' like wrinkles in your duct tape |
![]() |
![]() |
![]() |
#12 |
Account Suspended
Join Date: Dec 2005
Location: SPOKANE, WASHINGTON
Posts: 1,001
|
Re: Will this work for me?
Although it is better to have more fuel than not enough the 750 is to big in it's stock form These are easy carbs to rebuild but you should take the jets down a few, both the primary and secondary ones. You should also adjust the clip[ on the needle to help not dumo as much fuel. You do not want to dump to much fuel in and have it wash out your cylinders. Just my 2 cents.
|
![]() |
![]() |
![]() |
#13 | |
Senior Member
Join Date: Feb 2004
Location: Ponca city now kingfisher Oklahoma
Posts: 1,221
|
Re: Will this work for me?
Quote:
I agree.I would have this carb jetted down. I had a truck I took in trade a few months back. It had the big eddy 750 on it and was almost new. When driving it from a stop light there was some major hesitation from being too much carb for stock 350 via performer intake. A buddy some years back had his oversized holley rejetted and it ran much better. Just need to find someone who knows what they are doing. |
|
![]() |
![]() |
![]() |
#14 |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
|
Re: Will this work for me?
Thanks guys.
![]()
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
![]() |
![]() |
![]() |
#15 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
|
Re: Will this work for me?
Speaking from experience, the best carbs on a stock 350: 500 edelbrock or 500 2bbl Holley. Unless your turning 8K, a 750 is useless on a 350. Don't mean to burst any bubbles, but that is from my experience.
__________________
|
![]() |
![]() |
![]() |
#16 | |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
|
Re: Will this work for me?
Quote:
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
|
![]() |
![]() |
![]() |
#17 | |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
|
Re: Will this work for me?
Quote:
It also depends on usage of the vehicle. A street vehicle needs to hold steady rpm's for extended periods as well as have good throttle response for stop and go situations. The smaller carb has better fuel atomization because there is less fuel an air to mix. The bigger carb sends so much more air and fuel that it has a harder time to mix before reaching the combustion chamber. There are two factors that determine how the fuel atomizes: time and space(or area). Time being the length of the stroke. The area being the size of the bore. The two factors that determine cid. A longer stroke allows more time and a larger bore allows more area The amount of time and area is also a factor in the intake manifold itself. Aftermarket intakes have longer(time) and larger(area) runners. That why carb spacers help. They give the fuel more time and area to atomize. The camshaft and heads also play a roles in this but I won't get into that now. I hope this didn't confuse you more than help. I've learned that bigger isn't always better and I try to help people with what I've learned. And sorry for the long post.
__________________
|
|
![]() |
![]() |
![]() |
#18 | |
Registered User
Join Date: Sep 2005
Location: Roseville, CA
Posts: 152
|
Re: Will this work for me?
Quote:
Just my .02 Hope it helps.
__________________
Avatar is a pic of "Before"... Just wait.. ---------------- 1969 Fleetside: Shortened frame for SWB, ECE 4-6 drop. ECE SS tank. All new ECE suspension. Rebuilt 12 bolt 3:73 with Eaton Posi. Front and rear disc brakes. Ramjet 350 and 700r-4 trans. 20" Centerline wheels with Kumho 295/45/20 tires (I hope they fit). Progress pics: http://s44.photobucket.com/albums/f2...uck/?start=all ---------------- Seriously... It's nothing a large dose of cash can't fix... Right? After all, I can't take it with me when I go... Just gotta have enough to get there!!! ![]() |
|
![]() |
![]() |
![]() |
#19 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: Will this work for me?
While formulas will always point to a 500 or so CFM carb, I have yet to see a dyno session where a 350 didn't respond better with a 750 holley, edelbrock, or what ever kind of carb you wanna talk about.
Throttle responce may suffer MPG may suffer. |
![]() |
![]() |
![]() |
#20 | |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
|
Re: Will this work for me?
Quote:
Dyno sessions always work well with bigger carbs because there is no load. when you put that combo in the vehicle with a load, everything changes. The engine all of a sudden can't handle the extra air/fuel. If anyone doesn't believe me about the 500 Holley 2-bbl, go to a short oval track and see what the superstock late model winners are running. There were a couple of teams here running 600 DP's. They couldn't get good hole-shots out of the turns. They started using the 500's. Now they're in the top three every race.
__________________
|
|
![]() |
![]() |
![]() |
#21 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
|
Re: Will this work for me?
[QUOTE]Speaking from experience, the best carbs on a stock 350: 500 edelbrock or 500 2bbl Holley[QUOTE]
I will also agree with you a 600 is plenty for a motor that does not see past 6000 RPM. I got a 650 so when the stroker gets built I dont have to spend another $575 +tax on a new carb. Smaller jets and away I went. The 750 will be plenty you will need to jet it down depending on your cam/motor combo.
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD Last edited by 72MARIO; 02-18-2006 at 01:17 AM. |
![]() |
![]() |
![]() |
#22 | |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
|
Re: Will this work for me?
Quote:
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
|
![]() |
![]() |
![]() |
#23 |
Registered User
Join Date: Jun 2005
Location: Gulfport Mississippi
Posts: 364
|
Re: Will this work for me?
Great info 68stepbed. Thanks!
JKR
__________________
****Have you ever danced with the devil in the pale moonlight....I ask that of all my prey**** 68' C10 Short Step (rebuilding as we speak) 72' Custom Camper (wrecked, parting out) 79' C10 Fleet (rough, parting out) 97' C1500 Short Step Custom (DD) 97' Kawaski VN800a Customized 99' Z71 Silverado 04' Suzuki Volusia |
![]() |
![]() |
![]() |
#24 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
|
Re: Will this work for me?
The carb can be made to work, but I have to agree with the rest of the crowd......milage will suffer, as well as throttle response. Dont forget to add an insulator gasket, or better yet a 4 hole PLASTIC , or wood insulator. The edelbrock carbs dont run right without the insulator......also , no more than about 5 1/2 psi on the fuel pressure. best of luck......
![]()
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
![]() |
![]() |
![]() |
#25 |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
|
Re: Will this work for me?
Thanks for the input, I'll just hang on to it until I find a motor for it.
![]()
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
![]() |
![]() |
![]() |
Bookmarks |
|
|