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Which Carb?
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Topic: Which Carb? (Read 639 times)
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bigfoot
Member
Posts: 170
Which Carb?
«
on:
February 03, 2012, 02:03:10 PM »
I need to replace the carb on my car and am wondering which one I should go with. I have a friend who has 3 that should work and I can have one. Which would be the best for a 79 400 Pontiac motor?
Edelbrock 1406 Performer Series 600cfm
Edelbrock 1806 Thunder Series 650 cfm
Edelbrock 1813 Thunder Series 800 cfm
Jeff
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1979 TA SE
1980 TA
2007 Charger R/T
2004 Porsche Cayenne S
brian c
Lifetime Member
Posts: 4880
Ohio Firebirds Member
Re: Which Carb?
«
Reply #1 on:
February 03, 2012, 02:12:25 PM »
#4...Quadrajet. Pick one up as a core off Ebay and have Tom (Maryland Bandit) rebuild it with a Cliff Ruggles kit.
Otherwise the 800cfm would feed the engine the best as the 600cfm units would choke the engine. Remember in stock trim the 400's came with 800cfm carbs from GM. GM didn't put them on there just for bragging rights
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1978 Y88, '70 455 HO block bored 0.060, TH350, 3.42:1 gears...Oct '08 Fbodywarehouse Calendar - Woot!
1980 Firebird - no engine/tranny... to be pacecar clone
SavingTheBird76
Adv. Member
Posts: 1887
Re: Which Carb?
«
Reply #2 on:
February 03, 2012, 03:44:59 PM »
Shaker hood?
if so..you don't have any real choices..they are mostly the same.
If you don't have the shaker..go Holley...and avoid the headaches.
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HAVE YOU SMOKED A MUSTANG TODAY?
gilbertsta
Sr. Member
Posts: 1125
"Live Like You Are Dying"
Re: Which Carb?
«
Reply #3 on:
February 03, 2012, 07:08:50 PM »
go with the 650.
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Wallington
Adv. Member
Posts: 2640
Re: Which Carb?
«
Reply #4 on:
February 03, 2012, 07:44:49 PM »
Too small, will run out of breathe early on
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gilbertsta
Sr. Member
Posts: 1125
"Live Like You Are Dying"
Re: Which Carb?
«
Reply #5 on:
February 03, 2012, 07:50:14 PM »
bigger is not always better
there is a trend to running smaller cfms at the track
here is something i found quickly to back it up.....
http://www.gofastforless.com/fuel/picker.htm
G'day
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Wallington
Adv. Member
Posts: 2640
Re: Which Carb?
«
Reply #6 on:
February 03, 2012, 09:29:47 PM »
Not always, when mine was on dyno it lost 15hp going from 800 qjet to 750 Holley, and then 40hp again going with 600 Holley, had no legs at higher end
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bigfoot
Member
Posts: 170
Re: Which Carb?
«
Reply #7 on:
February 04, 2012, 10:10:16 PM »
Savingthebird, yes it does have the shaker hood. Gilbert, thanks for the article. I think I will give the 800 a try and if thats too much I will swap it our for the 650. Thanks everyone for all the input.
Jeff
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1979 TA SE
1980 TA
2007 Charger R/T
2004 Porsche Cayenne S
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Hitman's Pontiac Trans Am Forum
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DriveTrain
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Topic:
Which Carb?