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#9724 01/17/2004 12:33 AM | Joined: Jan 2001 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 687 | This is a claim made by an Ebay seller who's selling an Offy 4 barrel intake... "54HP gain by installing this manifold and a Holley. 115HP gain with the addition of a cam, and 145+ with the addition of headers." :rolleyes: I have a 500 cfm Edelbrock on the same manifold along with a cam and long headers on a 292, but nowhere near 145 HP gain he claims!  All my gains don't even add up to the 54 HP improvement he claims you can get with JUST the addition of the manifold and carb! :p http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=36474&item=2454337470 | | | | | Joined: Apr 2000 Posts: 71 Shop Shark | | Shop Shark Joined: Apr 2000 Posts: 71 | Would a used manifold salesman lie?  | | | | | Joined: Feb 2000 Posts: 5,228 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,228 | I seen that yesterday and got a good laugh out of it! If it was just that easy.... Joe | | |
#9727 01/17/2004 10:30 PM | | Anonymous Unregistered | | Anonymous Unregistered | The biggest single gain I have heard of was 16 hp by adding dual carbs on an offenhauser manifold. That was according to a dyno test of many components and configurations of components.
Somebody is yanking somebodies chain! :mad: | | | | | Joined: Jan 2001 Posts: 613 Member | | Member Joined: Jan 2001 Posts: 613 | the edlebrock intake i put on my cadillac 500 was susposidly good for 40 hp. | | | | | | Anonymous Unregistered | | Anonymous Unregistered | I think part of the deal here is that if you think pecentages a few horses may be a big increase with a small engine. I'm sure that a good for barrel and high rise set up on a V8 gets a lot more horses than a good carb/intake set up on a stovebolt. The 16 hp bump I refered to above was on a 235. If you have a 100 hp engine 16 horses is a HUGE bump. I think Clifford has a combination of cam, intake, carb, and headers they claim will give a 25% increase. Okay, if you're working on a 150 horse 250, 25% is 37.5 horses, and that is a long way from what this ebay clown is claiming! Bob | | | | | Joined: Jan 2000 Posts: 734 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 734 | 97 percent of HP numbers are made up on the spot.
Matthew 6:33 1952 Chevy 1/2-ton 3100 Late '55 235/SM420/torque tube 3.55 Dalton Highway survivor (using original 216) www.truckwithaheart.com | | | | | Joined: Sep 2003 Posts: 1,820 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 1,820 | I wrote him an email right after this subject was posted and asked how he gets his numbers. No answer yet.
"Truckin' Around .......... Since 1937!" My name is Joe and I am addicted to Classic Country Music. I just can't hep myself.Operators are standing by to take your calls! Now cruising in the Passing Lane | | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | ebay musta dropped his decimal points Bill | | |
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