Author Topic: 74 & 80 cubic inch shovelheads ?  (Read 7891 times)

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Offline Scooterfish

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74 & 80 cubic inch shovelheads ?
« on: Monday, February 07, 2011. 08:49:50 AM. »
I believe the 1st 80 cubic inch shovel was introduced in 1978. What models rec`d the 80 ci in 1978? What was the last year the  74 ci was used in production & in what models?  :scratch:

Thanks  :up:
Northern Indiana

Offline dale3dale8

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #1 on: Monday, February 07, 2011. 09:10:17 AM. »
I owned the first 80cu. in. in southeast Georgia and it was a 1979 superglide? Thought the 80 was into in 1979???

Offline nome

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #2 on: Monday, February 07, 2011. 10:05:16 AM. »
don't know for sure, but I think they brought it out as an option then the next year standard...

Offline gronk

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #3 on: Monday, February 07, 2011. 10:25:23 AM. »
 80" began in '78 on touring models,ie: Electra Glides. Offered on other models such as Lowriders in '79.
74" was available until '80 on FLH's for sure, not sure of others.
Gronk

Offline hd06myway

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #4 on: Monday, February 07, 2011. 01:30:13 PM. »
Yes, '78 was the first shovel 80"er, on FLH models only, but technically, Harley made an 80" flathead '36 Harley, I met a guy who was riding one in the 90's in The Great American Race, a cross country timed race event.

1930-1935 Flathead (side-valve): Big Twin flatheads led the line for only six years before being overshadowed by Harley's first overhead-valve V-twin. However, flathead Big Twins remained available through 1948, selling alongside their more modern siblings. Original Big Twin flatheads displaced 74 cubic inches; an 80-inch version was added late in 1935.

Offline fleetmechanic

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #5 on: Monday, February 07, 2011. 04:25:28 PM. »
The 80" Shovelhead motor was introduced midyear in 1978 on the 75th anniv. model Electra Glides.  We bought new police bikes in 1979 that were 74" but by 1981 even the police models were 80" as a standard.

Offline Scott P

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #6 on: Monday, February 07, 2011. 05:16:02 PM. »
Yup.
The 80"er was in the "King of the Highway" FLH's in 1978.
Scott
"If I parrot or google information, folks will suspect I really know."

Offline kink04fxd

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #7 on: Monday, February 07, 2011. 05:37:12 PM. »
My 1979 Lowrider was a 74". The last one my dealer sold that year. http://i291.photobucket.com/albums/ll289/kink1955/Earlyriders/79FXS.jpg[/img]]
« Last Edit: Monday, February 07, 2011. 06:02:32 PM. by kink04fxd »
2000 FLHT 88" (for now)
1982 FLH 80"

Online Caper

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #8 on: Monday, February 07, 2011. 07:05:18 PM. »
80" shovels were mid year '78... From the HD Data Book... Production Totals were, FLH 1200-4761...FLH 1200 Anniversary-2120 and FLH 80- 2525

Offline alstar2

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #9 on: Monday, February 07, 2011. 08:17:22 PM. »
the thing about the 80's, was they just bored stock 74 cyl,3 & 7/16
 & took them out to 3&1/2.that meant over bores were limited   
    Al

Offline Glide-Rider

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #10 on: Monday, February 07, 2011. 11:50:53 PM. »
Lets don't forget the "Flat Head 80" motors" from 1930-1936.  The original 80" motor.  Which was replaced by the Knuckle in 1937.
Pete
Warner Springs Ca.

Offline hd06myway

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #11 on: Tuesday, February 08, 2011. 05:03:40 AM. »
I didn't, see my previous post  :wink:

Offline tmwmoose

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #12 on: Tuesday, February 08, 2011. 05:27:56 AM. »
the thing about the 80's, was they just bored stock 74 cyl,3 & 7/16
 & took them out to 3&1/2.that meant over bores were limited   
    Al



        The stroke was increased to 4 1/4 " also!!
« Last Edit: Tuesday, February 08, 2011. 05:34:17 AM. by tmwmoose »

Offline a_disalvo

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #13 on: Tuesday, February 08, 2011. 05:34:47 AM. »
I bought my 1979 Lowrider in Sept.1979, it was a 1200 CC, made to run on premium leaded fuel, list price was $4,700.00. On the floor at this time was a 1980 Lowrider, 1340 CC, made to run on premium unleaded, list price $5,600.00. The dealer discounted the '79 to $4,200.00, the rest was history. Had other bikes over the years, but I'm glad I never sold that shovel. "98 CI and a blast to take out for an occasional romp. Frank

Offline Scooterfish

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #14 on: Tuesday, February 08, 2011. 05:53:19 AM. »
Great info guys :up:  The question come up on a tool board I`m on. We were trying to figure out the overlap on 74 ci & 80 ci.

Casper do you have any production numbers for 74ci in 1980?
Northern Indiana

Offline 78shOvel

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #15 on: Tuesday, February 08, 2011. 08:48:41 AM. »
I have a 1978 FXEF 80. Eighties were made at the end of the 78 production year on some models.

Offline jeffscycle

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #16 on: Tuesday, February 08, 2011. 10:35:57 AM. »
  They did sneak out a few 74"s in 1980, as basic superglides, FXEF fat bob's (useing up old parts), and some FLH s'. Overall the 74s' during that era were better motors, as the first 80" ers were bad shackers due to bad balancing, and lots of other problem. You don't see hardly ANY( if any), 1980 FXWG's with factory flames because they shock & broke the tank mounts on damn near all of them. Also the original '79 Tan & cream classics 80ci. were also known to be a bad batch with lots of problems. One personal story is a friend of mine road his new '79 80ci. low rider (fxs), about 200ft. off the dealers lot, and the whole wiring harness fried. The same bikes tranny lunched inside of 500 miles, and he had to rebuild the motor under 2000 miles. Fortunatly his got balanced properly then & also fortunatly most of the bikes from this era have been rebuilt, so most of the so called AMF gremlins are gone.
 
'01 FXDXT, '99 FXDL/XRD, '76 FLH

Offline harley54

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #17 on: Tuesday, February 08, 2011. 11:02:41 AM. »
I have a 1978 FXEF 80. Eighties were made at the end of the 78 production year on some models.

I bought a blue FXEF for about 4600.00 in 78 and must have been made earlier in the year
because it was a 74 c.i.Great bike but its long gone.

Offline gryphon

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #18 on: Tuesday, February 08, 2011. 12:17:28 PM. »
You could also buy a "kit" from HD to convert your bike to the new 80 inch motor. I got one and converted my 1975 engine. The 74 didn't need rebuilt at all but I wanted the "monster" 80". All my buddies were mighty impressed. Funny how now an 80" is thought of as being small.

Online Caper

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #19 on: Tuesday, February 08, 2011. 02:20:15 PM. »
74" bikes for '80 are...FXE-3169...FXS-3...FLH-1111...FLH Police-528

Offline Scooterfish

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #20 on: Wednesday, February 09, 2011. 06:03:50 AM. »
Thanks Caper  :up:
Northern Indiana

Online 76shuvlinoff

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #21 on: Wednesday, February 09, 2011. 09:40:14 AM. »
You could also buy a "kit" from HD to convert your bike to the new 80 inch motor. I got one and converted my 1975 engine. The 74 didn't need rebuilt at all but I wanted the "monster" 80". All my buddies were mighty impressed. Funny how now an 80" is thought of as being small.

hell these days 93 is tiny
Theryi're,
Take that ya grammar Nazis!

Offline hd06myway

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #22 on: Wednesday, February 09, 2011. 10:08:25 AM. »
Big motors are the result of the EPA restrictions and the refusal to abadon the V-Twin motor designs of HD and all other
V-Twin powered bikes.  The increase in size has been paramont to keep the power up to where it needs to be, if HD was still making 74" & 80" motors today, with the current EPA standards, the motors would barely be making 50 HP... now a much cleaner burning and efficient motor like those found in Sport bikes, doesn't have to play with it's size like V-Twins do, they can crank out high triple digit power numbers with half the size motors.  Bigger isn't better, it's just necessary when it comes to V-Twins, that's all.

Online CraigArizona85248

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #23 on: Wednesday, February 09, 2011. 01:01:32 PM. »
Lets don't forget the "Flat Head 80" motors" from 1930-1936.  The original 80" motor.  Which was replaced by the Knuckle in 1937.

The 80" flathead (UH and ULH) were made from 1937-1941.  They were not replaced by the Knuck which started production in 1936 (one year before the 80" flathead).  The two motors were made during the same time period and shared most of the same chassis and driveline (other then motor) components.
 
-Craig

Offline Ultrashovel

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Re: 74 & 80 cubic inch shovelheads ?
« Reply #24 on: Wednesday, February 09, 2011. 06:03:10 PM. »
The 80" Shovelhead motor was introduced midyear in 1978 on the 75th anniv. model Electra Glides.  We bought new police bikes in 1979 that were 74" but by 1981 even the police models were 80" as a standard.

Yep, 1978-1/2. They are featured in the Service Manual for 4 speed Bikes, 1978-1/2 to 1984. That book also has the first Evolution featured.