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Were there different balancers on the hydraulic cam 283s verses solid lifer 283s. Specifically I'm looking at '58s. I'm trying to make sure the balancer I have is correct. I've seen some with holes verses some without holes. Also I've heard that the large/small diameter rings were reversed on one vs. the other. If someone has a picture of one for a 270hp application could you send me a pic or post it? TIA
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Re: C1 Balancer
I've seen these and ones similar with holes. Is the high lift cam version different? If so can someone describe it?
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Re: C1 Balancer
Ted-----
This is the balancer for the low hp engines. The balancer for the higher hp engines had the smaller "step" on the rear. It was a two-piece balancer but constructed differently than the one you have pictured. There was a center hub section that was the full thickness of the balancer. The outer ring was "stepped" with the full diameter in the front and the small "step" in the rear. There was an elastomer between the inner hub section and the outer ring.
There appears to be some controversy over the presence or absence of holes in the outer ring. Some say that these did not have holes; reproductions do have holes. Actually, there were several different part numbers for this balancer used over the 57-61 period, so there may have been differences that are thus explained.In Appreciation of John HinckleyComment
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Re: C1 Balancer
There is a great picture of the balancer that NCRS wants to see in the 58-69 JG.Comment
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Re: C1 Balancer
Jerry could you (or somebody else on the board) send me a copy of the pic in the JG? I used to have one for my '60 but some how it got lost at the body shop while my car was in there. TIAComment
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Re: C1 Balancer
Joe, who make a repro of it? I've looked out at the usual suspects Mary Jo, CC, Paragon, etc. and haven't seen one.Comment
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Re: C1 Balancer
Good pictures of the low performance balancer vs. the high performance balancer are also shown in the Paragon catalog. Once you look at the two side by side, Joe Lucia's description will become crystal clear!
We can't send you pix without your e-mail address.... Also, if you've lost your Judging Guide book, it's probably time to get a replacement. I gotta figure this won't be the last question you're going to have!Comment
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Re: C1 Balancer
Ted-----
It's Paragon #343. It's pictured on page 16 of their latest catalog for 53-62. Like I say, trhough, there is some controversy regarding the holes on the balancer outer ring.In Appreciation of John HinckleyComment
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The 1958 290 HP Balancer is NOT the
same as the 59-61 solid lifter balancer. The 1958 290 balancer was #
3742986 w/o pulley - the March 1958 parts book so lists it. Shortly thereafter, Chevrolet goes to ANOTHER balancer and decides it "WILL FIT THE HOLE" on a 1958 also, so the listing in the July 1961 parts book shows #3764318 as the balancer for all.
The BLUEPRINT for #3764318 has an INITIAL DATE of 7/17/58; it is pursuant to E.C.R #2698 and the last revision was 10/5/62. The blueprint reads in part: "1/2 dia. drill as req'd to balance - .25 MAX DEEP in front face" which HAS TO = NO HOLES. Please note that Paragon's catalog does NOT show a balancer for a 1958 290. The one they are selling is by Goat Hill and it is turned down from some other Chevrolet balancer and is 1/2" EXCESS DIAMETER.Comment
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Re: C1 Balancer
Now I'm starting to get confused (not that it's a new thing for me). I'm primarily interested in a harmonic balancer for a very late '58 270HP car. Here's what I think I've heard so far. There were actually 3 "original" harmonic balacers in 1958. One for the hydraulic cam engines and two for the solid lifter engines (one for 270HP and one for 290HP FI). Over the years GM came up with a revision for at least the 290HP FI version some where around '61. Goat hill is reproducing a harmonic balancer but it is not correct in that it is too large by 1/2" (i.e. the picture in paragon's catalog - they don't seem to show it on their website).
- Am I correct so far?
- Did they revise the 270HP version also (i.e. what years would be correct for an Aug '58 car)?
- Are originals available? If so are there suggestions on where to look/cost(Mary Jo, Paragon, etc.)?
Thanks for your patience with me.Comment
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No. There were TWO in 1958 - #3742986 for
the 290 HP and 3743849 for everything else. The change came with model year 1959 but by 1961, the 59-61 balancer was listed as the SERVICE replacement for the 1958. Yours is available from Paragon - but I hasten to add that I have NOT compared it to an original.Comment
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Re: No. There were TWO in 1958 - #3742986 for
Loren, thanks alot for your help. So then the picture I posted would be the "correct" looking harmonic balancer for a 270hp, correct? The pic is from paragon but it is shown with a GM#3760584. Thanks again, TedComment
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Re: C1 Balancer
Don't feel bad, I'm confused also, I have a 60' 290HpFI and I don't believe I have the correct harmonic balancer, and up to now I couldn't get the same answer twice from anyone.
What I have been told correct was also high $$$$
I'm watching for your answers. '-))Comment
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