260 Intake swap?

xbody · June 27th, 2007, 09:18 PM

I have a 1975 Omega,with a 260.I was wondering what if any four barrel intake will fit?I know that this engine isn't really a performer but I want to get rid of the quadrajet two barrel.Any help would be appreciated.
Thanks for the help
Mark

Eightupman · June 28th, 2007, 11:40 AM

I have learned that there are not ANY manifolds that will fit the head port profile of a 260 motor. They will bolt up, but the ports will not line up. You would have to look at just upgrading to a Holley 2bbl ($259) to try and get the performance you are looking for.

Honestly, you wont get much out of a 260.

John

joe_padavano · June 28th, 2007, 12:35 PM

Get an intake from an Olds 350 - and leave the 350 attached to it!

Oldsguy · June 28th, 2007, 01:35 PM

Quote:

Originally Posted by joe_padavano

Get an intake from an Olds 350 - and leave the 350 attached to it!

I had to laugh at that one!

Seriously, that isn't a bad idea.

Eightupman · June 28th, 2007, 04:34 PM

Quote:

Originally Posted by joe_padavano

Get an intake from an Olds 350 - and leave the 350 attached to it!

I was trying to be nice... but that is pretty much what I would have said.

John

marcar1993 · July 1st, 2007, 07:59 PM

If you must keep the 260, you can probably use another set of heads, don't know what ones, and an intake to match. But at that point, you may as well just put in another motor. Unfortunately, 260's are not very perfomance orientated, and there isn't anything that I'm aware of that is made to work on the 260. The good thing about oldsmobile is that all motors mount into any sb or bb mount. Just that I don't know how much power the trans and rear can take. A mild or even stock 350 would be great.

GoldOlds · July 5th, 2007, 10:06 PM

Quote:

Originally Posted by marcar1993

Just that I don't know how much power the trans and rear can take.

Good point, since 1975 was right around the time GM started to replace 8.5" rears with the 7.5" units and some TH350s with TH200s. If the Omega in question has the TH350 tranny and 8.5" rear end, it should be able to handle some decent power - a hell of a lot more than any 260 can dish out (sorry to jump on the 260-bashing bandwagon, but everything that's been said about it is true)! If it has the 7.5" rear and/or TH200 tranny . . . well, a healthy in-line six could probably blow 'em up.

- GoldOlds

xbody · July 8th, 2007, 08:56 PM

Thanks for the help guys,I appreciate all the responses.I really don't want to make a race car out of the Omega,I just want a cruiser.I have 2 other X bodies-a '77 Nova with a Big Block Chevy-a '75 Pontiac Ventura with a 388 Stroker small block.So for right now I would like to have a dependable cruiser with good gas mileage and I really want to keep it Olds powered,and probably upgrading to a 350 Olds later.So thanks again.......Mark

J-(Chicago) · July 20th, 2007, 08:10 PM

Hey now, The 260 has more potential than a boat anchor. I believe I had one in my 82 cutlass. It was a 400 dollar car that is still running today with about 197000 on it. Bone stock. I gave it to my buddy's dad (a retired mechanic) for a project car to mess with some years back. It's in Yuma Tennessee at the moment towing trailers of hay for a cattle ranch.

June 27th, 2007, 09:18 PM	#1 (permalink)
xbody Junior Member Join Date: Jun 2007 Posts: 2	260 Intake swap? I have a 1975 Omega,with a 260.I was wondering what if any four barrel intake will fit?I know that this engine isn't really a performer but I want to get rid of the quadrajet two barrel.Any help would be appreciated. Thanks for the help Mark

June 28th, 2007, 12:35 PM	#3 (permalink)
joe_padavano Super Moderator Join Date: Mar 2007 Location: Northern VA Posts: 4,402	Get an intake from an Olds 350 - and leave the 350 attached to it! __________________ Joe Padavano 64 Jetstar 88 Conv 66 442 L-69 Conv 68 W-30 69 H/O 69 442 70 W-30 72 442 84 Custom Cruiser 86 Caprice wagon (w/307 Olds)

July 8th, 2007, 08:56 PM	#8 (permalink)
xbody Junior Member Join Date: Jun 2007 Posts: 2	Thanks for the Help Thanks for the help guys,I appreciate all the responses.I really don't want to make a race car out of the Omega,I just want a cruiser.I have 2 other X bodies-a '77 Nova with a Big Block Chevy-a '75 Pontiac Ventura with a 388 Stroker small block.So for right now I would like to have a dependable cruiser with good gas mileage and I really want to keep it Olds powered,and probably upgrading to a 350 Olds later.So thanks again.......Mark

July 20th, 2007, 08:10 PM	#9 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 2,697	75 Omygod Hey now, The 260 has more potential than a boat anchor. I believe I had one in my 82 cutlass. It was a 400 dollar car that is still running today with about 197000 on it. Bone stock. I gave it to my buddy's dad (a retired mechanic) for a project car to mess with some years back. It's in Yuma Tennessee at the moment towing trailers of hay for a cattle ranch. __________________ I'd rather have a numbers matching poker hand.

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June 28th, 2007, 11:40 AM	#2 (permalink)
Eightupman Registered User Join Date: Nov 2006 Location: Ladson, SC Posts: 497	I have learned that there are not ANY manifolds that will fit the head port profile of a 260 motor. They will bolt up, but the ports will not line up. You would have to look at just upgrading to a Holley 2bbl ($259) to try and get the performance you are looking for. Honestly, you wont get much out of a 260. John

July 1st, 2007, 07:59 PM	#6 (permalink)
marcar1993 Registered User Join Date: Apr 2007 Location: CNJ Posts: 165	If you must keep the 260, you can probably use another set of heads, don't know what ones, and an intake to match. But at that point, you may as well just put in another motor. Unfortunately, 260's are not very perfomance orientated, and there isn't anything that I'm aware of that is made to work on the 260. The good thing about oldsmobile is that all motors mount into any sb or bb mount. Just that I don't know how much power the trans and rear can take. A mild or even stock 350 would be great.