manifold problem

[Anonymous]

I are looking for a 4bl manifold for an alloy head . are currently running a ultra flo manifold with a 500 holly after a few dyno visits I was advised to get a bigger manifold and 600 holly as the current cant supply enough fuel any suggestions would be helpful

 

[Anonymous]

I got my 4bbl manifold off e-bay for cast Iron crossflow for approx $56.00 dollars plus postage "used". Might take a while but keep an eye on it and you may pick one up used from parts peddler magazine or e-bay. They are about $300 new.

 

[addo]

What are the specs of your motor?

 

[Anonymous]

the ultraflow manifold i are running now is very good I would like to get another but a four barrel does any one know where i can get one as they are no longer being made

I resently spoke to john cain the man behind cain manifolds and he told me that he had not made them for 5 years and he sold the mouldings to hardiman industries which trade as redline

 

[Anonymous]

10.1 comp come racing head and cam carter 109 gallon an hour fuel pump pacemaker extractors acl pistons current dyno figures 149kw at wheels

 

[xctasy]

That is very good! About 200 killerwatts, or 18 kw up on the latest stock BA.

I'd look at cutting up Ultraflows finest 2-bbl intake, and weld a new alloy 4150/4160 flange on like the Aussies and Americans are doing for there 200 and 250 2V conversions.

The Ultraflow intake has had lots of work done on it, and I can't see why you wouldn't want to use it as a starting point.

I'd sugest you get into meauring up space for the 4-bbl. Alloy Dave had some trouble getting space on the tight spring towers on his 67 XR. On an XA-XC or XD-XF, no problemo.

Use of an Edlebrock carb will help gain drivability and long term reliability. For maximum power, and if you don't mind going through the gaskets, power valve, squiters and secondary spring (if your using one) , then use the 600 cfm 4150/4160/4180 carb. Main advantage on any 4-bbl over the 2-bbl is better lean cruising, and less sensitivity to larg cams causing backfiring or driveability problems. You can go up over the 300 hp mark if the cam, gearing and head is well sorted much easier if you have enough carb.

 

[Anonymous]

There were a couple 4V intake on trademe.co.nz a few weeks back all from the same seller.

I need a 2V intake. Let me know if you wanna sell it.

 

[Anonymous]

the car is a 82 xe falcon so should have no problems as far as room goes where can I get a 4150/ 4160 flange from more info and the work done on it

 

[xctasy]

Redline sell them as Holley 4-bbl spacers. You just weld them up to the 2-bbl intake like Tassie 2V or Mustangaroo have on there 2V intakes.This is a very good way of making a cost effective 4-bbl conversion.

Dead easy to hack up a lovely Ultraflow intake.

Here is a 4-bbl to 2-bbl adaptor.

You just make it the other way around, out of tooling plate or free machining alloy, and have it TIG welded to the ultraflow.

Since we are not using methonal, and not at the oval track, a 2-bbl utraflow is too small. There used to be a special Holley 650 2-bbl, but they haven't been made for years.

Today, a person wanting 300 hp from a six needs to

a) create a 2-bbl 650 cfm carb by getting Barry Grant 62.5 thou over throttles, fly cutting the venturis out another 62.5 thou, and then eliminating the choke and fitting the rare #6425 air horn. They were able to run well over 300 hp on petrol


b) Spend big money on the new breed of specialist carbs from the States. Today, these can be used. This one below has the venturi taken out from 1.375 to 1.59", and has the throttles taken from 1.6875 to 1.75"

dAM 650 2bbl
"The Switch Is On..."

 

[Anonymous]

Cool carb. Looks like it'll run just sittin there. So what's the deal on the rare 6425 air horn. Are you supposed to be able to order them from Holley or maybe discontinued?

I like the idea of having a screaming 2 barrel and I live in the States where all those new carbys are from.

It's kind of like that 6=8 thingy...

 

[Anonymous]

what cfm is this carby where can i get one and how much$$ does the addition of the adaptor disturb the fuel flow?