Early 400 and 425 question

2blu442 · October 26th, 2008, 08:06 PM

Hey guys,
Can anyone confirm for me if the early 400 and the 425 used the same harmonic balancer? I understand the crank, rods and flexplate or flywheel interchange, so it seems to me the balancer should too. But I'm not positive and am hoping someone can help me with this. John

aliensatemybuick · October 26th, 2008, 09:04 PM

Yes, same balancer. As you know, only the cylinder bore (and pistons) differ. In fact, I hear quite a few early 400s have been bored out (by 0.125") to make a 425.

2blu442 · October 26th, 2008, 09:38 PM

Thanks! I dismantled a 1966 Toro engine and sold most of the pieces on ebay this afternoon. The bidding on the balancer went higher than I expected so I'd begun to wonder if I had listed it wrong as fitting both the 425 and 400. John

Run to Rund · October 27th, 2008, 04:16 PM

Geez, and I have several 400/425 balancers laying around. What are they worth these days?

jrmorte · October 27th, 2008, 05:23 PM

The balancer is the same on the early 400 and 425.I have an E block 400 that is bored .125. I am curious what the balancer went for?

2blu442 · October 27th, 2008, 06:05 PM

Hey guys
I didn't want to post the acutal amount, but since you asked I will. The winning bidder paid $106, there is a request for a second chance offer at $104, then a business name "damper-doc" who asked for a second chance offer at $31. So.... the going rate is probably closer to the $30 mark since he rebuilds balancers and that's what he was willing to pay for a core. I'm guessing the two other guys both needed one to complete an engine, and when I checked completed auctions there hasn't been one of these offered for a while. I've got a couple more too, but if someone else wants to post one on ebay I'll wait at least a month before I put another one up.

I've sold a lot more items on ebay than through this and a couple other Oldsmobile web sites, more coverage I guess. In a weeks time I had 99 hits on this auction and four different guys bidding on it. Cutlass/442 parts will often have a couple hundrend or more people view the auctions. I try to post the auctions on Sunday evening around 6:00 PM West Coast time. My theory is that Sunday evening has more people relaxing and playing on the computer than other evenings in the week. I also put lots of photos on so potential bidders can evaluate the condition themselves. There have been times that I gave someone a really good deal, then other times I got more than I expected. Overall I'm happy with the average. John

joe_padavano · October 27th, 2008, 06:13 PM

Quote:

Originally Posted by 2blu442

H...Cutlass/442 parts will often have a couple hundrend or more people view the auctions....

Just be aware that although you're seeing a couple of hundred views, some of them are the same person checking in more than once. Even if the real number if independent views is a hundred, it's still a pretty large potential number of buyers.

BILL DEMMER · October 27th, 2008, 11:42 PM

iirc, ebay counts viewers by unique ip address.

iirc, the '65-'67 330's used this same balancer(the ones with balancers-not simple hubs).

bill

October 26th, 2008, 08:06 PM	#1 (permalink)
2blu442 Moderator Join Date: Sep 2006 Location: Medford, Oregon Posts: 2,261	Early 400 and 425 question Hey guys, Can anyone confirm for me if the early 400 and the 425 used the same harmonic balancer? I understand the crank, rods and flexplate or flywheel interchange, so it seems to me the balancer should too. But I'm not positive and am hoping someone can help me with this. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1967 Cutlass four door daily driver 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!

October 26th, 2008, 09:38 PM	#3 (permalink)
2blu442 Moderator Join Date: Sep 2006 Location: Medford, Oregon Posts: 2,261	Balancer Thanks! I dismantled a 1966 Toro engine and sold most of the pieces on ebay this afternoon. The bidding on the balancer went higher than I expected so I'd begun to wonder if I had listed it wrong as fitting both the 425 and 400. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1967 Cutlass four door daily driver 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!

October 27th, 2008, 05:23 PM	#5 (permalink)
jrmorte 65-442 Join Date: May 2008 Location: Fresno Ca. Posts: 22	425 balancer The balancer is the same on the early 400 and 425.I have an E block 400 that is bored .125. I am curious what the balancer went for?

October 27th, 2008, 06:05 PM	#6 (permalink)
2blu442 Moderator Join Date: Sep 2006 Location: Medford, Oregon Posts: 2,261	Harmonic Balancer Hey guys I didn't want to post the acutal amount, but since you asked I will. The winning bidder paid $106, there is a request for a second chance offer at $104, then a business name "damper-doc" who asked for a second chance offer at $31. So.... the going rate is probably closer to the $30 mark since he rebuilds balancers and that's what he was willing to pay for a core. I'm guessing the two other guys both needed one to complete an engine, and when I checked completed auctions there hasn't been one of these offered for a while. I've got a couple more too, but if someone else wants to post one on ebay I'll wait at least a month before I put another one up. I've sold a lot more items on ebay than through this and a couple other Oldsmobile web sites, more coverage I guess. In a weeks time I had 99 hits on this auction and four different guys bidding on it. Cutlass/442 parts will often have a couple hundrend or more people view the auctions. I try to post the auctions on Sunday evening around 6:00 PM West Coast time. My theory is that Sunday evening has more people relaxing and playing on the computer than other evenings in the week. I also put lots of photos on so potential bidders can evaluate the condition themselves. There have been times that I gave someone a really good deal, then other times I got more than I expected. Overall I'm happy with the average. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1967 Cutlass four door daily driver 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Chevy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished! Last edited by 2blu442; October 27th, 2008 at 06:07 PM.. Reason: More details*

October 27th, 2008, 11:42 PM	#8 (permalink)
BILL DEMMER Just the facts... Join Date: May 2008 Location: THE GREAT WIDE-OPEN Posts: 208	iirc, ebay counts viewers by unique ip address. iirc, the '65-'67 330's used this same balancer(the ones with balancers-not simple hubs). bill __________________ '67 CUTLASS 4-DR. W/425 & S.P. THM400 (NAMED "ERNIE") '83 H/O #1339(STILL IN PIECES) '85 PONTIAC FIERO SE V-6 4-SPD. BOUGHT NEW '92 CHEBBY DIS-ASTRO (GAS PIG) '97 GYRO METRO $HYTBOX (41.42 MPG) Last edited by BILL DEMMER; October 27th, 2008 at 11:44 PM..

October 26th, 2008, 09:04 PM	#2 (permalink)
aliensatemybuick Registered User Join Date: Jul 2007 Posts: 241	Yes, same balancer. As you know, only the cylinder bore (and pistons) differ. In fact, I hear quite a few early 400s have been bored out (by 0.125") to make a 425.

October 27th, 2008, 04:16 PM	#4 (permalink)
Run to Rund Registered User Join Date: Mar 2008 Posts: 339	Geez, and I have several 400/425 balancers laying around. What are they worth these days?

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