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Old 02-10-2004, 06:41 PM
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what can I put in my 84 cutlass supreme

I have a 84 cutlass supreme brougham, and i'm thinking about changing from the original chevy 305 to a bigger engine. I was thinking about a 350, but then my cousin told me about I could maybe put in a chevy 400 smallblock, he said all I would have to do is change the exhaust manifolds, but I was gonna be putting on headers anyways. I don't want to do alot of modifications. Any Ideas on this??

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Old 02-10-2004, 07:10 PM
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actually you can bolt everything right up, same block, same motor really, just a bigger bore and stroke. Go with the 400 for sure! It will drop right in, hook up to your tranny and give you an upgrade that will put a huge smile on your face. I've heard gripes from a lot of people who put a 350 as an upgrade motor in their cars, and they were happy with it somewhat but always sort of had a regret that they didn't put a 383 or a 400 in instead. Cubes are power, most definately in close to stock motors. Get a big cube sbc.

K
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Old 02-10-2004, 07:12 PM
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Like they say no substitute for CI i would think monte carlo headers would fit the olds frame since they are built on the same platform.





mike

Last edited by Rogers Performance; 02-10-2004 at 08:05 PM.
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Old 02-10-2004, 08:03 PM
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Wife and I had an 85 Olds Cutlass Broughm we bought new. It had 126K on it when we sold it to a firend of ours. The car was never wrecked and still looked good although the paint was going south. He jerked the tired Olds 307 and trans out and installed a 502 crate and a 700R4. It now runs mid twelve second quarters on street tires, and is quite the sleeper.

Vince
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Old 02-10-2004, 09:41 PM
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go for the 400! they are lots of fun to work with, and the extra 50 cubes really shows up. just wathch for the 400 4 bolts, they have a history of cracking blocks. oyher than that, go nutz!
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Old 02-10-2004, 10:14 PM
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You sure it`s a chevy 305? if it is it didn`t come factory with it, 1977 was the last year of a chevy 305 in a Olds Cutlass, the 84 models came with a 3.8 liter 231 CI V6, a 4.3 liter 260CI olds V8, a 5.0 Liter 307CI olds V8, and a 5.7 liter Diesel. if your engine is the olds engine, the battery will be on the drivers side as will the starter. if your car has the olds engine, swapping over to a SBC is a breeze, you`ll need SBC engine mounts which are a bolt on, you`ll need a tranny with a chevy pattern if yours isn`t the milti pattern bellhousing type, the stock crossmember will work also with the short tail TH350 Tranny. the carbon canister can be removed and the battery placed on the passengers side, and the wiring will also swap over, the fuel lines are also on the passengers side which is right for the chevy engine. the best bang for the buck after a small block is added is gears, my 86 Cutlass came with 2.14:1 gears, I swapped the guts from a 83 Firebird trans am, with posi traction and 3.23:1 gears.
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Old 02-10-2004, 10:36 PM
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thx alot for the advice...I think i'm gonna be putting in the 400 and change the rear gear ratio.
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Old 02-11-2004, 04:37 AM
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Sinners!!! Putting a cheby motor in an olds!

Get and olds motor, dump in a 403 or build up an olds 350.

Cutlass s were sold with chevy 305s until around 81 I think.
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Old 02-11-2004, 11:24 PM
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Be different....but still go for the jugular!! Stick a 472 or 500" Caddy engine in there!!

More Torque than you'll know what to do with!!!
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Old 02-13-2004, 01:04 PM
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My old 84 Cutlass had a 307 v8 in it. I'm told that a pontiac 455 will drop in with same accessories etc.
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Old 02-13-2004, 04:50 PM
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Why not put in a Northstar motor.
You must use the computer for the fuel system, A V6 would have plenty of Torque.
Here is a Google search for the adapter plates, it has them for all different applications for the V6 & V8 Northstar, and other engine combinations and vehicle's.
http://www.google.com/search?hl=en&i...=Google+Search
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Old 02-14-2004, 09:27 AM
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I put a stock Olds 455 in my 81 Cutty. It fit in easily and nice and smooth and best of all, every Tom, Dick and Harry in a new auto, can't cut me off to get in front of me (nobody respects a 80s Cutlass!) Cubic inches definetely level the playing field with the new auto's!
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Old 02-14-2004, 10:57 PM
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Quote:
Originally posted by dallam1
I put a stock Olds 455 in my 81 Cutty. It fit in easily and nice and smooth and best of all, every Tom, Dick and Harry in a new auto, can't cut me off to get in front of me (nobody respects a 80s Cutlass!) Cubic inches definetely level the playing field with the new auto's!
How the hell did you do that with-out the air cleaner hitting the hood?
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Old 02-14-2004, 11:25 PM
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bb olds isn't that much taller than a sb. Just wider

K
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Old 02-18-2004, 04:55 PM
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the only draw back to the olds 455 is you can't turn them hard with out looking at the connecting rods laying on the pavement. "BUT" put in a high gear like a 3.08 or 2.73 & they last & you get good torque & top end speed. a 403 olds is also a strong little engine. i had one i put in a 80 cutlass & it shocked a many gt mustangs. myself, i would go with the chevy 400. & BUILD THE PISS OUT OF IT !!!!!!!!!!!!!!!!!!!!!!! i did.
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