Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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Johns 4.9
John Leo

(17 posts)

Registered:
09/30/2019 10:13PM

Main British Car:


Re: 4.5/4.9 Cadillac V8
Posted by: Johns 4.9
Date: February 01, 2020 04:09PM

This is what 180 degree headers with dual exhaust sounds like. Sounds like two four-bangers running together in unison live and in stereo. Probably not the exhaust note for everyone, but I like it! Cheers.

[www.facebook.com]


Johns 4.9
John Leo

(17 posts)

Registered:
09/30/2019 10:13PM

Main British Car:


Re: 4.5/4.9 Cadillac V8
Posted by: Johns 4.9
Date: June 25, 2020 10:27AM

New LS inspired stand alone fuel injection for the Cadillac 4.5/4.9 engine. Electronics are Fast Retrofit TPI Kit.
Fuel injection08 mini.jpg
Fuel injection10 mini.jpg


mgb260
Jim Nichols
Sequim,WA
(2277 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 4.5/4.9 Cadillac V8
Posted by: mgb260
Date: June 25, 2020 11:47AM

John, Excellent work! Over 60,000 hits on this thread! Keep the idea's coming!


Moderator
Curtis Jacobson
Portland Oregon
(4533 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: 4.5/4.9 Cadillac V8
Posted by: Moderator
Date: June 25, 2020 07:08PM

That certainly is a handsome EFI plenum!


mgb260
Jim Nichols
Sequim,WA
(2277 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 4.5/4.9 Cadillac V8
Posted by: mgb260
Date: July 21, 2021 06:50PM

Jon Olshewski, Auto shop teacher at Salt Lake City, UT East high school and his students are working on an interesting project. They discovered that 215/Rover heads bolt on with the inside headbolts and pushrod and lifters line up. Outside bolts are on the edge of the heads and would need material added for those bolts. Here are some pics of the 215 Olds heads on the 4.9 Caddy block.
headson (1).jpg
pushrod.jpg
top heads on (1).jpg


RallyTime38
Jonathan Olschewski

(5 posts)

Registered:
07/21/2021 01:45PM

Main British Car:


Re: 4.5/4.9 Cadillac V8
Posted by: RallyTime38
Date: July 21, 2021 07:12PM

Jon here.

The other slightly inconvenient flaw to this is the valves are backwards. As in the camshaft lobes aren't for the correct valve. We have talked about running the engine as a Hot Vee setup or custom making a cam blank and getting a fresh one made...


minorv8
Jukka Harkola

(260 posts)

Registered:
04/08/2009 06:50AM

Main British Car:
Morris Minor Rover V8

Re: 4.5/4.9 Cadillac V8
Posted by: minorv8
Date: July 22, 2021 02:18AM

Engineering and educational aspects aside, what is the benefit using 215 heads on a Caddy engine ?



mgb260
Jim Nichols
Sequim,WA
(2277 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 4.5/4.9 Cadillac V8
Posted by: mgb260
Date: July 22, 2021 02:24AM

Caddy 4.9 has iron heads.


88v8
Ivor Duarte
Gloucestershire UK
(1001 posts)

Registered:
02/11/2010 04:29AM

Main British Car:
1974 Land Rover Lightweight V8

Re: 4.5/4.9 Cadillac V8
Posted by: 88v8
Date: July 22, 2021 04:47AM

Amazing idea.

I guess the inlet manifold would be the next bit of fun.

What about the rocker oiling?

V8


MGBV8
Carl Floyd
Kingsport, TN
(4327 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: 4.5/4.9 Cadillac V8
Posted by: MGBV8
Date: July 22, 2021 09:07AM

Tell them to find a set of aluminum '64 Buick 300 heads if going to all that trouble. ;)


mgb260
Jim Nichols
Sequim,WA
(2277 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 4.5/4.9 Cadillac V8
Posted by: mgb260
Date: July 22, 2021 11:06AM

I mentioned the Buick 300 heads. He actually was looking at the TA heads. Pushrod oiling. The cam is the biggest ordeal.


mgb260
Jim Nichols
Sequim,WA
(2277 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 4.5/4.9 Cadillac V8
Posted by: mgb260
Date: July 22, 2021 11:08AM

Carl, remember when we were trying to figure out a spider for the short V6 roller lifters for the Buick/Rover. Looks like the Caddy one would line up perfect.


mgb260
Jim Nichols
Sequim,WA
(2277 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 4.5/4.9 Cadillac V8
Posted by: mgb260
Date: July 22, 2021 11:47AM

Pic of 4.9 gasket on 215 head. Bore spacing and inside headbolt holes are perfect.
caddygasketon215.jpg


RallyTime38
Jonathan Olschewski

(5 posts)

Registered:
07/21/2021 01:45PM

Main British Car:


Re: 4.5/4.9 Cadillac V8
Posted by: RallyTime38
Date: July 22, 2021 01:28PM

The catch to both of these is that the Cadillac head is only 2/3 the actual material size of the Buick 215 head. So in reality the Buick head is even lighter than this technically in what it replaces.

received_936411320477587.jpeg
received_507093326998459.jpeg


RallyTime38
Jonathan Olschewski

(5 posts)

Registered:
07/21/2021 01:45PM

Main British Car:


Re: 4.5/4.9 Cadillac V8
Posted by: RallyTime38
Date: July 22, 2021 02:05PM

[youtu.be]

In our application we are all about weight reduction. In race trim this has body panels on it.

Basically 2200 lbs or 1000kg and All Wheel Drive.



MGBV8
Carl Floyd
Kingsport, TN
(4327 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: 4.5/4.9 Cadillac V8
Posted by: MGBV8
Date: July 23, 2021 10:47AM

Once you get it sorted, that will be a hoot in RallyCross.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6274 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 4.5/4.9 Cadillac V8
Posted by: BlownMGB-V8
Date: July 23, 2021 11:21AM

Looks like you may have some studs and exhaust bolts wanting to occupy the same space.


DiDueColpi
Fred Key
West coast - Canada
(1338 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: 4.5/4.9 Cadillac V8
Posted by: DiDueColpi
Date: July 23, 2021 01:49PM

That Caddy engine is a wet liner, open deck block.
I bet that there's room to move the outer head bolts inboard in the block enough to fit.
The rover cam looks close enough to fit as well, with some creative machine work.
The only real PITA would be the dist drive gear. Machine the bearing journal off the rover cam and machine the caddy drive gear and journal to press fit back onto the rover cam. Pin, through bolt or braze the whole thing together and your good to go.


roverman
Art Gertz
Winchester, CA.
(3178 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: 4.5/4.9 Cadillac V8
Posted by: roverman
Date: July 23, 2021 07:23PM

Uh, I know a guy with billet, round lobe, cam blanks ?
Art.


RallyTime38
Jonathan Olschewski

(5 posts)

Registered:
07/21/2021 01:45PM

Main British Car:


Re: 4.5/4.9 Cadillac V8
Posted by: RallyTime38
Date: July 25, 2021 10:55PM

I don't think this design will allow what you are suggesting.

IMG_20210723_171534708~2_resize_32.jpg
Screenshot_20210725-202635_resize_52.jpg
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