: chevy motor in a brougham?



hotrodlincoln460
02-01-06, 07:35 PM
i might end up with an 85 fleetwood brougham with a blown 307 and was wondering what kind of work it would be to put a chevy small block in it with the a/c pls let me know thanks

N0DIH
02-01-06, 08:04 PM
New exhaust up front, reroute fuel lines to the other side of frame, new AC lines, as AC compressor is on wrong side now. It is far easier to drop in an Olds 350 or 403. It is 100% bolt in.

Depending on the trans, if it doesn't have a dual bolt pattern, you need a new one of those too.

hotrodlincoln460
02-01-06, 08:08 PM
so i could use the old mounts? whats the best car to take the accessory drive from? a caprice maybe? howbout a g body?

sorry about all those extra posts though..

N0DIH
02-01-06, 08:26 PM
No, you will need mounts from the appropriate engine in that bay, say a Caprice, 77-92. G Body maybe, not sure, they likely are the same. You might even get BB mounts to work, they often lower the engine, but may cause other issues.

Accesories from pretty much any 305/350, keep for similar years/carlines, like 85-90, carb'd (if you are keeping it carb'd, TBI conversion might be a pain). Z28/TA parts might work, but will likely setup lower for a lower hoodline.

Me? Go with a 455 Olds or 425, even 400, 400 (yes, there is 2 400's) or 403. Easier than chevy anyday. And the smile will be plastered all over your face for weeks....

G-Body donor on accesory drive is likely a safe choice.

The mounts for the engine will go to the chevy positions, as Olds has them in different places (slightly).

hotrodlincoln460
02-01-06, 08:29 PM
yeah ideally i would wanna put a bigger olds motor but theyre kinda hard to find here in hawaii and my co workers friend builds chevy engines.. theyre kinda cheap to work on too heheh

Night Wolf
02-01-06, 10:40 PM
3 words:

Big Block Cadillac.

I am biased :)

davesdeville
02-02-06, 08:02 AM
3 words:

Big Block Cadillac.

I am biased :)

Damn straight.

Then again I'm a bit biased as well.

:worship: 500CI

Big_Blue
02-02-06, 09:31 AM
First of all how did your 1985 come with a 307 motor? it should be a 4100 motor in it. Since 307's started in 1986 and 1985's had the 4100 with the tow package.Unless you have a rare 1985 or someone did the swap already.Second how would you guys tell him change back to carb from FI?

hotrodlincoln460
02-02-06, 02:50 PM
First of all how did your 1985 come with a 307 motor? it should be a 4100 motor in it. Since 307's started in 1986 and 1985's had the 4100 with the tow package.Unless you have a rare 1985 or someone did the swap already.Second how would you guys tell him change back to carb from FI? yeah maybe youre right cuz my friend told me it was an 86 also, but the build date was pretty early in the year.. but this one is pretty virgin about 80k on the clock but he overheated it and i think he blew the head gasket

N0DIH
02-02-06, 03:22 PM
Look for OEM installed 3rd brake light, that was a clue for 85 to 86 (very easy way to clue in on any 86-up). And I think the grill changed in 86.

But it is likely that Cadillac installed the 3rd BL in 85 to get the jump on "safety"

hotrodlincoln460
02-02-06, 03:59 PM
New exhaust up front, reroute fuel lines to the other side of frame, new AC lines, as AC compressor is on wrong side now. It is far easier to drop in an Olds 350 or 403. It is 100% bolt in.

Depending on the trans, if it doesn't have a dual bolt pattern, you need a new one of those too. would there be a good chance this car would have the proper bolt pattern trans?

HashiriyaS14
02-02-06, 05:25 PM
3 words:

Big Block Cadillac.

I am biased :)

One word: LT5

Just kidding, obviously, but wouldn't it be cool?

I'd put LT5s in everything from my daily driver to my mom's lawn tractor if I could.....

N0DIH
02-02-06, 08:50 PM
I always wanted to put a Buick 231 on a riding lawn mower....

then when the go fast feeling has worn off, you an EFI it, and then turbo it....

Night Wolf
02-02-06, 11:23 PM
One word: LT5

Just kidding, obviously, but wouldn't it be cool?

I'd put LT5s in everything from my daily driver to my mom's lawn tractor if I could.....

eh... you are new here, still have a little to catch on to..... :)

Here BB Cad rules all... atleast the "classic hot rodders" :) And it would be the first enigne I would consider in a Cadillac.

I have the 425 in my '79... so I'm on the "in", lol... she'll be getting a 500 someday though....

Night Wolf
02-02-06, 11:29 PM
I always wanted to put a Buick 231 on a riding lawn mower....

then when the go fast feeling has worn off, you an EFI it, and then turbo it....

LOL!

you and I think alike!

My Oldsmobile has a 3800.... 231... made by Buick :) I too have always thought putting that on a lawn tractor wuold be the redneck in me waiting to come out :).... if anything ever happens to that car where it gets into (another) (worse) accident and is totaled, or simply rusts into the ground... that whole engine cradel is getting pulled and being put into some sort of scool project :).... my sand car/dune buggy idea still seems the most practical.

N0DIH
02-03-06, 02:02 PM
I was thumbing through an old Hot Rod mag today and noticed that in all the old cars, in the old days (40's to 50's) the common place was Cadillac V8's in the Fords, Chevies and Mercury's. Many people who restored them in the 80's retored the "proper" hot rodded Cadillac V8 in there.

Cadillac, the Standard of the World....

90Brougham350
02-03-06, 03:45 PM
In a car like an 86 Brougham, the only choice is a BB Caddy engine. I'll grant you an LT-5 would be pretty damned awesome, but here, you won't get too far against the BB Caddy bias, just because of the massive amounts of torque they make, exactly what our landyachts need. If you're thinking of a SBC swap, you may as just go with the Caddy swap. However, NODIH is right, the Olds swap would be the easiest!

brougham
02-03-06, 05:51 PM
I wouldn't say the only choice is a caddy engine in it. If it's easier to put a bigger Oldsmobile engine in it like N0DIH said then that's the way to go. Or if he really wants to use a chevy engine since that's what he originally asked about he just has to buy a Caprice or something else that already has the engine he wants and then he has all the different parts he needs.

Night Wolf
02-03-06, 08:22 PM
an Oldsmobile 403 is nearly a direct drop in, the 455 isn't too much more difficult and still nice.

I would do either of those... OR a BB Cad.

no SBC for me... in the Caddy atleast.

hotrodlincoln460
02-04-06, 04:20 PM
ive been thinking about it and i located a built olds 400 motor.. hopefully this guy gives me a good deal..

N0DIH
02-05-06, 02:03 AM
400, or 403? 403's are 100% bolt in. 400's are 90%. There is 2 400's, one based on a 425 block and one based on a 455 block IIRC. One is 4" bore, 3.975" stroke. The only real issues are likely exhaust, as the manifolds will be wider on the engine so the crossover is different. Picking up a new crossover from NAPA or your local parts store for a 76 Olds 88/98 w/455 should be ok. 403's are lighter, 400's are BB's, so they have some additional weight that you might need to add some stiffer springs for. You'll love it.

Oldsmobile Engine Specifications:

CID YEARS BORE STR.

400 1965-67 4.000 3.975
400 1968-69 3.870 4.250
425 1965-67 4.125 3.975
455 1968-76 4.125 4.250

hotrodlincoln460
02-06-06, 01:12 PM
is there casting numbers etc i should be looking for?

N0DIH
02-06-06, 07:24 PM
With 403's, no, there is rumors of solid main web blocks, but we think they are rumors, non have ever been proven to exist.

Check the Olds FAQ on the Olds V8. A wealth of info is there.

http://www.442.com/oldsfaq/oldsfaq.htm