Holley carb on an Evo?
Club Member
Joined: Jun 2007
Posts: 3,193
Likes: 7
From: North Atlanta Area, GA
I have built some street rods in my past, maintain 4 of them for my (who dies with the most toys wins) dad and have bolted on a few Holley's. One of those cars has a 454 Chev with a 4 big hole Holley, it is cool but man I'm glad I don't feed it.
I generally keep Q-jets around for wheel chocks and when aluminum reaches 30 cents a pound.
That Harley/Holley carb package that T150 posted looks neat! Someone had to of had good luck with it.
I generally keep Q-jets around for wheel chocks and when aluminum reaches 30 cents a pound.
That Harley/Holley carb package that T150 posted looks neat! Someone had to of had good luck with it.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
I bought one new at sale price. It has 32mm chokes as I recall. Each cylinder pulls on both chokes, so its total throat area is at least as big as a 45mm. It was too big for my 89 inch stroker, so is really only suitable for highly tuned motors. Ran OK at low to mid throotle openings, but when accelerating quickly it flooded the engine. My local tuner had a go at trying to make it work better, but showed me what the problem was. I'll try and dig up some pics of it I have around somewhere. Putting it right got me into buying an S&S 107, but that's a loooong story!
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HDF Community Team
Joined: Dec 2005
Posts: 5,419
Likes: 2,621
From: NC USA
Well you need to have your tuner go back to photo #2 of the first post and read the directions:
"This carburetor uses stock throttle and idle cables and has excellent driveability, and throttle response."
See - he didn't follow the instructions - it's for a 92-99 and of course should have used the stock cam which has .472 lift and even less duration than that of a fart in a whirlwind.
Sorry Graham - couldn't resist, I've not had me meds today......
BUT seriously, would love to see some photos if you find them.
"This carburetor uses stock throttle and idle cables and has excellent driveability, and throttle response."
See - he didn't follow the instructions - it's for a 92-99 and of course should have used the stock cam which has .472 lift and even less duration than that of a fart in a whirlwind.
Sorry Graham - couldn't resist, I've not had me meds today......
BUT seriously, would love to see some photos if you find them.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
That's not a carburetor, THIS is a carb!
Drove very smooth and gave reasonable fuel consumption, as long as I didn't open the throttle too quick, which was a shame. The builder who stroked my Evo gas flowed the heads, fitted Crane cam hi-comp pistons etc, fitted an Edlebrock. That couldn't handle the motor or feed it, strangling it when accelerating quickly. Unfortunately my Holley was as unwise a choice, the pendulum swung too far!
t150vej, my man got a bit of it right! I am not sure just what sort of motor this carb will best fit, but it needs to be able to shift a lot of air.
Drove very smooth and gave reasonable fuel consumption, as long as I didn't open the throttle too quick, which was a shame. The builder who stroked my Evo gas flowed the heads, fitted Crane cam hi-comp pistons etc, fitted an Edlebrock. That couldn't handle the motor or feed it, strangling it when accelerating quickly. Unfortunately my Holley was as unwise a choice, the pendulum swung too far!
t150vej, my man got a bit of it right! I am not sure just what sort of motor this carb will best fit, but it needs to be able to shift a lot of air.
Last edited by grbrown; Feb 11, 2010 at 03:38 AM. Reason: Added para.
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HDF Community Team
Joined: Dec 2005
Posts: 5,419
Likes: 2,621
From: NC USA
This is 3rd hand info of course, but that's the story I got the other day - the tuner could get it real close on the top end, but the lower rpm range suffered and vice-versa. Just couldn't make it trim out all thru the rpm range.
But it IS a bad-azz looking setup! Thanks for the photos Graham.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Oh but yes, a "see-thru" air cleaner would be required for that set up
This is 3rd hand info of course, but that's the story I got the other day - the tuner could get it real close on the top end, but the lower rpm range suffered and vice-versa. Just couldn't make it trim out all thru the rpm range.
But it IS a bad-azz looking setup! Thanks for the photos Graham.
This is 3rd hand info of course, but that's the story I got the other day - the tuner could get it real close on the top end, but the lower rpm range suffered and vice-versa. Just couldn't make it trim out all thru the rpm range.
But it IS a bad-azz looking setup! Thanks for the photos Graham.
The contrast between my Edelbrock and the Holley was interesting. When snapping the Edelbrock throttle open quickly the motor could stall, because the carb couldn't feed the thing, which suggested it needed a seriously bigger carb. Unfortunately the Edelbrock is not easily adjusted and never ran particularly well.
The Holley was sweet as could be at normal gentle riding, but when opening the throttle quickly the motor spewed out black smoke because it was getting too much fuel. When snapping the throttle open, it also could stall, but by being flooded! So getting it to run nice was OK until wider throttle openings, when there was no way of getting it to run right.
I bought a new Keihin kit, but then started thinking of what more I could do to pep things up a little more, hence the S&S....
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Cruiser
Joined: Oct 2009
Posts: 233
Likes: 0
From: Canada...west coast
[quote=NorthGeorgiaHawg;622867
This thread is the first I've ever heard of a Holley carb for a Harley. Guess they didn't sell very many, from reading the other posts on this thread.[/quote]
Haven't seen one of those oddities in years.....buddy had one, un-tunable.....remember the Quicksilver carb?
This thread is the first I've ever heard of a Holley carb for a Harley. Guess they didn't sell very many, from reading the other posts on this thread.[/quote]
Haven't seen one of those oddities in years.....buddy had one, un-tunable.....remember the Quicksilver carb?
Stellar HDF Member
Joined: Feb 2007
Posts: 2,558
Likes: 280
From: Russellville, Arkansas
I remember all those carburetors......a buddy of mine had the Holley. It was unreliable and he was always trying to get the bike to tune right. Never happened!
I even once tried the quicksilver, only because it was a good deal. It sucked really bad!!!
I personally believe the stock CV carburetor is a decent one. It is simple and works rather well.....and is definatley reliable! Having said that......I find the Super E to be my favorite though.
I even once tried the quicksilver, only because it was a good deal. It sucked really bad!!!
I personally believe the stock CV carburetor is a decent one. It is simple and works rather well.....and is definatley reliable! Having said that......I find the Super E to be my favorite though.
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