4.5/4.9 Cadillac V8

[serenitythen]

Nice looking project neighbor!
I created this account to ask if there was any updates to this project and you beat me to it within a few hours. I'm mainly interested in all the 4.9 trickery.

[RideZiLightning]

I think I just might beat you to it

The car was going to have a 350 in it, but I changed my mind when a snagged up a 4.9l for $150 and 4l60-e from an s-10 for $90

71k on the 4.9l and 27k on the tranny



I'm in WA as well btw

[mgb260]

You might! Haven't had much time lately. Did the torque converter bolt up to the 4l60E?

[serenitythen]

I sure wish I had as much engine bay space to work with on my planned swap (4.9 in a fwd Saturn).
There's a few completed fwd 4.9 Chevy Citations around the country which sorta inspired me.
http://www.petacar.org/members/Coper/coper.cfm
http://thebaron.110mb.com/v8citation/installation_index.htm

Good Luck with your projects fellow Washingtonians!

[RideZiLightning]

Yessir, tc works for fwd, rwd, v6, and v8 setups

I'm no stranger to the swap as I've done multiple 4.9l, 3.8SC and 3.4DOHC Fieros

It's all wired up to run out of the car. I just need to finish the dash wiring, lengthen the driveshaft, finish my trans mount and swap out the leaking water pump

This car has been sitting since Dec of '88 so it has ALOT of work before it's road worthy

[mgb260]

Turbo build plus other mods from Pennock's archive: http://www.fiero.nl/forum/Archives/Archive-000002/HTML/20060206-1-023354.html

[mgb260]

Ebay has quite a few 4.9 motors $200-$500. Cheap gaskets,bearings,etc. Also found pictures of 82-85 4.1 RWD dampener and water pump pulleys. Looks like you could use SBC pulleys with my SBC water pump adapters and the early dampener.

[mgb260]

Link to Pennock's forum thread of M90 supercharger on 4.9. My project has been on the back burner for awhile.  http://www.fiero.nl/forum/Forum2/HTML/118088.html

[mgb260]

Motor mounts will be about 1 1/2" further forward than 60 degree V6. Also here is an interesting thread from the Fiero forum:

http://www.fiero.nl/forum/Forum2/HTML/120549.html

[mgb260]

Let's bring this thread back from the dead! More goody's for the 4.9 Cadillac!
http://johns49performance.com/index.html

[MGBV8]

Check the "Scans from 'Automotive Rebuilder,' June 1994" at the bottom of this page.

http://www.nathanbittinger.com/fieroaddiction/caddy49b

[BlownMGB-V8]

Definitely interesting. Also of note, on a few Cadillac models they used a variant of the Aisin AA80E transmission. Called it something other that AA80E though. I wonder if it would fit this engine?

Jim

[Scott Costanzo]

I very seriously considered this swap back in 2010. Jim N. and I exchanged several PMs about this motor at the time. It is very compact and light and I thought it would fit very nicely in a B engine bay. I  had a plan to mount a blower to the intake manifold and use some custom GM OBD1 code called Code59 to run it. It would have been an interesting project. It wasn't long after this that I started considering an LS swap and the rest is history. It would be great to see someone use one in an LBC.

[mgb260]

Johns4.9performance engine start up:

http://www.fiero.nl/forum/Forum1/HTML/097586.html

Pics of beautiful 4.5 V8 John did for a friend:

[mgb260]

Buick V6 roller fulcrums and slots added for pedestal rockers from turbo build thread on Pennock's site:

[BlownMGB-V8]

What does the stock setup look like?

[mgb260]

Jim, Those are the stock rockers with the 93-95 3800 Buick V6 rollers instead of aluminum sled with tie bars that seem to break.

[MGBV8]

The tie bars break because those puny little studs are flexing?

[mgb260]

Carl, That may be part of the issue. The 8mm bolt is pointed like a self tapping screw and has pulled out of the bridge also. One guy has redrilled and tapped for 10mm Allen bolt threaded through the bridge  with lock nuts. If they would have used steel tie bars like Oldsmobile it probably wouldn't be an issue. You still need a way to guide the rockers. With the slots in the bridge you can use Ford pedestal roller or conventional 1.7 rockers also.  4.9 are 1.6 ratio. Dodge Magnum look similar and their base channels have guide plates for the pushrods. Dodge Magnum rockers pic:

[mgb260]

Another interesting thread on rockers and cams.

http://www.fiero.nl/cgi-bin/fiero/showThread.cgi?forum=Archive-000001&thread=20130314-2-100898&style=printable

[BlownMGB-V8]

That does need sorted out. There was an attempt to use SBC rockers on SBB heads by attaching a base plate but it resulted in stud breakage. Too much flex. I wonder if twin tie-bars would be feasible, intake and exhaust? Might be able to link the tie-bars together for more rigidity.

Jim

[mgb260]

Adapting parts from other makes or making parts specific for this motor for performance is the answer. It was never meant for a hot rod and just a daily driver/grocery getter.

[pcmenten]

It's interesting to me the sled rocker design being used on other engines. I have a Ford Windsor block/ Cleveland head stroker motor and I insisted on using Crane high-lift sled-type rockers with two things in mind;

- The fulcrum has that squared alignment pedestal boss that prevents the rocker arm from rotating
- The sled design of the fulcrum makes the rocker center under the fulcrum and prevents side-to-side shifting.

I have heard that Cheby BB rockers would work on Cleveland heads but I had also heard that roller rockers tended to tick because of the lateral forces from the angle of the pushrod due to the splayed design of the valve angles. As the valve is opened, the centerline of the lateral forces of the pushrod crosses the centerline of the angle of the rocker, pushing it side-to-side.

My Clevor has a roller cam conversion with valve lift of .525".

Paul

[mgb260]

Paul, Maybe the Buick roller pedestal would work in the Ford rocker?

[mgb260]

Remote oil filter adapter from Chad's Porsche swap site: