5998DownUnder

Hi all,


After spending $670 on the four barrel Rochester by a so called pro to fix, the carb still runs crappy. So I am really happy!


I took matters into my own hands. As I am a tappet head from way back, I just happened to find a brand spanking new Holley carb (600, vac secondary, man choke) in my shed and threw it on with an adaptor plate. And yes, this did fix the carb problem. No bogging down at all now.


I actually need that carb for my Chev so it cannot stay on the Olds.
I am moving away from Rochester as no-one seems to, or want to, touch them here. Reco's from the states including postage are the same as a new carb at the store here.


Question Is:


What would you guys/gals recommend for the Oldsmobile?
Input greatly appreciated.


Thanks
John.

Edelbrock and why


or


Holley and why?

1964super88

On my 64, 394 i had an edelbrock 1406 600cfm on it and it ran great. But i had to manually shift it as the linkages to the slimjim trans. So i had a older mechanic rebuild the 4 gc, and it runs much better the edelbrock, more power mainly. But he really knew his stuff and adjusted it to my motor, all for a case a beer too. So if you can get all the linkages to work right i think either the holley or edelbrock would be fine.

5998DownUnder

Finally got the Holley on, a bit of work and it runs o.k. Still goes through the gears without the mechanical gearbox linkage connected, just the throttle is connected. Not as 'gutsy' as the Rochester however will get me out of strife until my reco motor from the States arrives in a few months.


At least I can drive it around.

olds 307 and 403

The new Street Demon carb is an improved version, all new castings carb. It will fit spread and square bore intakes. The only problem mentioned above is hooking up your shift rod.

5998DownUnder

Street Demon, nice looking carb, was looking at that for my van that has a Chev in it a while back.
That could work.


Thanks

cutlassefi

QF 750 Slayer. Cheap, good and very tunable.

5998DownUnder

Thank you,
did not think of this one, I will check it out now.


John.

lazy394

how I would love a 3 x 2 setup !
I believe the linkage setup to the gear box is critical, so I would need to retain most of it.

nsnarsk65cutlass

The Edelbrock AKA carter afb is the least intrusive for 4gc replacement .Not a Holley fan..

oldcutlass

Like the others have said, the shift linkage is a critical component to your choice.

5998DownUnder

Can someone put a photo up of the shift linkage So I know what that is?

lazy394

The shifter linkage is the one with the 2 adjusters (right hand side). I believe the gearshift is based on throttle position hence the 2 adjusters and centre pivot.