Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: ferretjuggler on January 03, 2009, 11:41:34 AM

Title: Which size carb?
Post by: ferretjuggler on January 03, 2009, 11:41:34 AM

I'm thinking about treating myself to a new Edelbrock 500 carb for the V8.
Any opinions V8 jeepers?


I spent about 4 hours yesterday (sad bastard) going through all the posts on the IFSJA forums relating to TBI and MPI systems for their V8s.
F.F.S!!! I'm still none the wiser, the conclusion I've come to is stick with a carb.

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Post by: Bubba on January 03, 2009, 11:44:21 AM

the standard motor craft one is fine for most stuff


but i do likey very much my edelbrock

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Post by: ferretjuggler on January 03, 2009, 11:47:04 AM

I've got one of those, off a 360 too,but it won't fit on my four barrel manifold.

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Post by: Mike Pavelin on January 03, 2009, 12:47:24 PM

If that's 500CFM, I would say it's a tad too big for a stock 360 unless you intend driving it flat out everywhere. a smaller one will give better torque at lower rpm.

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Post by: ferretjuggler on January 03, 2009, 03:12:41 PM

All the Holley tuning books I have point at 390 to 450cfm for an engine of 350(ish) ci and a fairly low state of tune.
The 600cfm Holley I've got on now seems way too big.
American jeepers, however, simply won't have it.
670cfm Holley Truck Avenger on a bog stock 360 is typical.

I met a guy (over here) who ran a (std) Jeep 258 six with a 600cfm carb on it.

I like overkill but thats just plain silly

I've been searching the IFSJA forums on V8 carbs.
The more posts you read the more confused you get.
Consensus seems to be that the Edelbrock is a good on road carb, but crap off road even with the off road float kit.

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Post by: Bubba on January 04, 2009, 12:41:28 PM

there are many who swear by the holly 390 conversion for the 4.2 and i rekon the conversion has been available from 4wd  and others for gettin on for 30yrs

i ran a 500 cfm edelbrock on my 304 v8 and i had no problems i bought the jet needle and spring set wich gives around  8 options for the carb thats primarys aand secondarys

i now run a 600 on my 360 and did the same


when you  ask about carbs you might aswell be asking whats ya fave pint or rock band


you will get lots of answers be it holly webber su stronmberg rochester the same goes for sizes  


you will have to choose the midle ground and go from there

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Post by: ferretjuggler on January 04, 2009, 01:31:47 PM

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when you ask about carbs you might aswell be asking whats ya fave pint or rock band

You're certainly right there.
place all the jeepers in the world end to end and they still wont reach a conclusion.
I think I'll try 'n give the motorcraft a go soon.