: more brougham engine swap questions



LupoNero
01-04-10, 12:24 AM
Hey i was wondering how big of a job, how much cost wise(Ballpark), and what is needed to swap the engine of a 87 brougham to this http://www.jegs.com/i/GM%20Performance/809/10067353/10002/-1?CT=999, also would it be better to do this swap or upgrade the engine to a vin 9?

drmenard
01-04-10, 01:10 AM
Are you going to do the swap? Paying someone to do it could run you more than you might think...Buying a parts car could be not so costly for all the little parts that add up to a big bill...a 77-79 is a good swap for a 425 or a 90-92 FWB that has a 350 but there would be a lot more wiring with that...

LupoNero
01-04-10, 03:58 AM
paying someone to do the swap, wish i had the knowledge or the tools to do it myself but i dont

sven914
01-04-10, 04:42 AM
Upgrading the parts is a lot cheaper and easier than swapping around two engines.

You don't need that many parts for the VIN 9 conversation. If you can't find the right heads, you can get away with putting a performance cam in them with stiffer valve springs. And if you can't get the right carburetor you can have your's modified with richer secondary metering rods or you can change it for a Holly.

LupoNero
01-04-10, 07:58 PM
i dont really know alot about this subject but the what am i looking at gas mileage wise with the 425 in this car, basically would like to keep it the same or at least 15mpg city 25 highway and the car to do 0-60mph in like 8secs

sven914
01-04-10, 08:25 PM
If you upgrade to a Cadillac 425 (Oldsmobile hasn't made one since 1967) you will lose your economy both because you will be upgrading in power but also because you will be losing your overdrive transmission. The only transmission that will work with the 425 is the THM 400, which does not have overdrive.

The 425 came carburetted with the option of Port Fuel Injection. The carburetted engine gets about 11 city and 14 highway, while the fuel injected engine gets 15 city to 20 highway. It is a hard conversion to go from carburetted to fuel injected (a lot of expensive parts and hard work). Add on the cost of a new transmission and you might as well get a 77-79 Fleetwood Brougham.

supercad1
01-04-10, 10:32 PM
Hey i was wondering how big of a job, how much cost wise(Ballpark), and what is needed to swap the engine of a 87 brougham to this http://www.jegs.com/i/GM%20Performance/809/10067353/10002/-1?CT=999, also would it be better to do this swap or upgrade the engine to a vin 9?

If you car has an Oldsmobile engine (307??), any Oldsmobile engine should be an easy swap. The motor mount locations are the same for big and small block engines. If you are crazy enough, you could go to a 455 swap, but you would also need a TH400 transmission to handle it. The 200-4R would need to be beefed up considerably to handle the huge torque coming from a 455.

A Caddy big block would be great also. You would have to use a TH400 for this transmission to handle the torque this motor would generate.

If possible, buy the Olds 455 and TH400 that was on the engine from the same car/guy.

BRICKS
01-04-10, 11:13 PM
[QUOTE=sven914;2109460

The 425 came carburetted with the option of Port Fuel Injection. The carburetted engine gets about 11 city and 14 highway, while the fuel injected engine gets 15 city to 20 highway. It is a hard conversion to go from carburetted to fuel injected (a lot of expensive parts and hard work). Add on the cost of a new transmission and you might as well get a 77-79 Fleetwood Brougham.[/QUOTE]

i beg to differ on the gas mileage of the 425. i easily got 14-16 mpg city and it was carburated.

LupoNero
01-06-10, 06:32 PM
What about this one http://www.rebuiltcrateengines.com/oldsmobile-307-hurst-olds-v8-p-2151.html anyone ever heard of it? would it be a direct swap?

Stingroo
01-06-10, 07:09 PM
It looks like that's just a VIN 9? Or am I missing something here....

sven914
01-06-10, 07:14 PM
Well if they got their information right (which a lot of it is wrong), then that is the same engine that is in your car now, but has been supped up to make 270 horse power.

Basically it looks like they bored the block to an unspecified specification and gave it some performance cam. I honestly don't know how they can get 270 horse power from a 307 without doing more.

And if you have $2000 to spend on an engine off the internet, why get a "Hurst/Olds 307" (which in actuality, the '83 and '84 Hurst/Olds cars only got a stock VIN 9 307 hooked up to a fancy transmission) and not an LS1. You can probably find one in a trashed Camaro or a Firebird for about $1000, and then you can throw the rest of the money at some garage until they install it correctly.

Stingroo
01-06-10, 07:18 PM
^ Sounds good to me!