68Delta88

looking for a 425, in no paticular great of shape, but must be unblown up, with as little rust as possible, and complete rod set. must have the more popular lifter bank angle, with .921" lifter bores, not the odd ball bank angle, with popular style lifters. also perferably as low of and "F" code as possible, such as, "F1" or "F0" would be nice. im located in lindsay ontario, but am willing to drive pretty far for pickup.

Oldsmaniac

The engine you are looking for will only be found in the 66 or 67 Toronado as you want the large lifter engine and 39 deg. cam angle.

68Delta88

Yeah, i couldnt remember if that motor was an early one or a later one, didnt feel like looking it up... anyways, you know where i can get one?

Oldsmaniac

The only place I have seen a few of these for sale lately is the dreaded site called EBAY.....they turn up there sometimes.

2blu442

68Delta88 We've talked before but I don't remember where your located. I've got some 425's but shipping an engine very far may cost more than the purchase price! I'm in Medford Oregon, SW part of the state 30 miles from the California border. I'm thinking I read that a 425 crank will fit in a 455 block. If that's true and you could come up with a 455 block local you could add the 425 steel crank, rods and pistons in a rebuild. Can anyone verify the 425 crank in a 455 block? John

68Delta88

actually, i prefer the 425 block. i was going to swap in a 455 crank, and make use of the 425 rods, with an oversize 455 pontiac piston. that way i get flat tops with a longer rod/stroke ratio. i then have a full set off .921" roller lifters, and have the tools to retrofit them to the block, after converting them to solid. i wanted the 425 crank for a 350 diesel stroker that ive been planning for awhile. however, im almost thinking of scrounging up a good 455, and just getting a hold of some 425 rods, and then just running a solid flat tappet. not sure yet, but anything you can find let me know.

2blu442

OK, here's how clueless I am. I'm not even sure how far East Ontario is! Are you near the Great Lakes? Have you posted a parts wanted ad on realoldspower.com yet? I know there's a whole mess of Oldsmobile guys just a stones throw from Lansing Mich. and some of them have to have extra 425's laying around. I have three in the garage now and am still trying to work a deal to purchase six Toronados, three 1966, one 1967 and two in the 1970's. Must be a package deal and I'm trying to make room behind the garage where the neighbors won't see them! But yeah, the shipping would kill any deal we might make.

P.S. put on your Rino skin before spending time on ROP, some of the guys can be downright rude!

ROCKETQUEEN-ONE

I HAVE FOR SALE:

1965 OLDS 425 # 396525A WITH 7" RODS AND STEEL CRANK STILL IN IT. IT WILL NEED REBUILT

73 F3 BLOCK WITH A 68 ON TOP OF IT IN WHICH I AM NOT SURE WHAT YEAR THAT MAKES IT

A F6 BORED OUT '30 OVER. THE OLDS FAQ SAYS ITS A '67 NON TORONADO MOTOR BUT I ALWAYS THOUGHT IT WAS A 455 FOR I HAD THIS MOTOR SINCE '87 AND IT WAS A SUPER BAD *** MOTOR

A SET OF "C" HEADS WITH 500 MILES ON THEM
A SET OF 'E' HEADS THAT PROBABLY COULD USE A REBUILD
1 425 'A' HEAD

I HAVE A 455 CRANK GROUND DOWN .10
2 SETS OF 455 RODS
NUMEROUS OTHER 455 PARTS

DROP ME A LINE AT thesroke@msn.com or rocketqueen-one@hotmail.com IF YOU ARE INTERESTED. THEY ARE LOCATED CLOSE TO DUBOIS,PA 15801
THANKS MATT

Kennybill

Hello, I have a complete 1967 Toronado C-headed engine in my engine pile. I am in Ohio. PM me if u r interested, Ken

junkman67

junkman67

I HAVE 2 ENGINES IN KY

fast68

425 were installed in a billion 79 caddies
i had a perfect runnign driving 6 door 79 caddy limousine it had the 425 in it

i junked it

no one wanted anything of it

i wish i had the engine now i could have put it in this real nice solid 85 supreme that i am taking to the shredder soon since no one wants it

cant evne get someone to trade me a beater old truck or wagon or anything for it at all

rust free frame body and all, clean interior, perfect dash, gray and gray

crazy,


good luck!

88 coupe

425 Cad and 425 Olds were totally different engines.

If it was an Olds, it was a 307.

Norm

J-(Chicago)

Damn it, I was asking about taking that car months ago.
PM sent.

liggett

I'm new to forum's so please bear with me while I learn. I have considered putting the olds 7" rods / 455 crank / pontiac pistons in a 425 block - as you have mentioned. Have you trial fitted this combination? I have some questions. Is the bottom of the bore in the 425 block notched for rod clearance like the 455 block? Do the big-ends of the rods clear the camshaft (the bolt heads of the 455 rods are much closer to the parting line - I assume to prevent interference with camshaft)? The long rod with the long stroke will move the beam of the rod closer to the cylinder wall at maximum rod angle - do they clear? Any information you have regarding this combination would be appreciated. Thanks. Mike

Rallye469

Yes...this is my 469 frommy '70.
455 Block (4.185Bore)
425 Crank (4.254Stroke)
7.1" BBC rods
It's fun!!!! Revs pretty quick. Makes obscene power.

Never really heard of doing this combo...
your starting off with the less common/odd ball block & weaker crank.

dar83501

This is true. My 455 block started it's life as a '65 or '66 425 block, whoever rebuilt it threw in 455 rods, pistons, crank, flexplate, and it has B cast heads. I find it somewhat curious that with the existing performance mods my engine has, that they chose to go with 425 heads instead of a set of 455 C heads or the aftermarket edelbrocks...perhaps they simply couldn't find anything better...Olds big block parts are hard to come by in this region.

88 coupe

425 and 455 are the same block. The reciprocating assemblies are fully interchangeable.

Pin placement in the Pontiac piston is slightly different, but it doesn't seem to be a problem with "street" engines.

Here is an example.

The only one I've been involved with, used 425 rods and 4.125" Arias pistons.

Norm

88 coupe

No reason to. There is not much difference in flow, between A, B, and C heads.

Norm

Rallye469

?
Assuming they all have the small valves...
A 2.07 valve C head will outflow an A head, or
a B head for that matter.
Someone correct me if I'm losing my mind.

dar83501

I have heard both.

J-(Chicago)

This sounds like a job for the flow bench.
Too bad I don't have any of those heads, or the aforementioned bench.

88 coupe

http://members.tripod.com/~nichibei/headflow.htm

It was posted, and discussed, on ROP, several years ago.

Norm

88 coupe

He has a good reason for using that particular block & that "weaker" crank is a non issue.

Norm

J-(Chicago)

Rallye469

This is from the head comparison you provided...
It's a bit misleading 88Coupe.

Only some '66 B & '67 C heads came with 2.07 valves.(Toro motors)
So...saying all A,B & C heads flow the same is false.

All A,B & C heads that were modified with(or came with) 2.07 valves flow the same would be a lot less misleading.

Sorry to beat this point to death, but if you find a set of A's They won't flow the same as Toro C's...

88 coupe

Thanks for the clarification.

Norm