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Re: Tiny small block V8
Hotrod Lincoln #1227095 Wed Jul 26 2017 03:43 AM
Joined: Nov 2004
Posts: 1,830
J
Workshop Owner
After re-reading your original post, I concluded that to use a 283 crank, it must be the older (55-56) version.

John


J Lucas





1941 Chevy 1/2-Ton
1942 Chevy 1.5-Ton SWB
1959 Chevy Apache 31 Fleetside
1959 Chevy Apache 32 Fleetside
1959 Chevy Viking 40

My Flicker Photos! [flickr.com]

Re: Tiny small block V8
Hotrod Lincoln #1227099 Wed Jul 26 2017 04:04 AM
Joined: Feb 2004
Posts: 21,012
H
Boltergeist
There is no such thing as a 55-56 283. The first 283's were produced in 57. However, both the 265 and the 283 used identical crankshafts, forged cranks with a 3" stroke. Some of the very late production (early 1960's) 283 engines used a cast crank, but since I'm planning on building a high revving engine, I'll probably use the forged item. I'll be using a 305 block with a set of thick-wall main bearings to adapt the small-diameter main journals of the 283 crank to the later block. I also plan on installing aftermarket 4-bolt main bearing caps in the 2,3,and 4 positions. Every performance engine I build starts out with a line bore, so adding the 4 bolt caps doesn't add much to the initial cost.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Tiny small block V8
Hotrod Lincoln #1227133 Wed Jul 26 2017 01:37 PM
Joined: Apr 2005
Posts: 2,612
C
Shop Shark
I have a couple of 302 DZ cranks with the 3" stroke and big mains but both need attention. The best one has a deep gouge where a rod bolt stabbed the journal but being forged maybe could be welded and ground. They were nitrided from the factory to a depth of no more than 0.006 and we found that even ground 0.010 they weren't near as durable. Will dig through my junk and see if they are still around and if so they will have a price that sounds like a baby chick---cheep, cheep; like you pay the shipping. A strike against the 302 is it's quite a bit heavier than the 265/283 which for a quick winding engine might not be desirable.


Evan
Re: Tiny small block V8
Hotrod Lincoln #1227142 Wed Jul 26 2017 02:01 PM
Joined: Feb 2004
Posts: 21,012
H
Boltergeist
Thanks, Evan- - - -The average big journal crank weighs in at around 50 pounds, give or take a little. A slightly gouged rod journal, reground to the 1.85" Honda rod bearing diameter and offset 1/16" to reduce the stroke would definitely be an option, no welding required. Since I don't plan to do any serious racing with this engine, getting the nitriding redone might not be necessary. Back when I was building engines for the "win at any cost" guys, King's Crankshaft was my go to source for 38 Lb. billet cranks. At $5500.00 a pop, I was glad I was spending somebody else's money!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Tiny small block V8
Hotrod Lincoln #1227175 Wed Jul 26 2017 07:33 PM
Joined: Nov 2004
Posts: 1,830
J
Workshop Owner
Jerry, no offense taken or implied, but I believe you misunderstood me. I am fully aware that the 283 wasn't available until '57. I was only asking if you were using an original '55-56 265 ci block.

The "Tiny small block V8" title just caught my attention and was I intrigued as I hadn't heard of anyone but die hard restorers messing with the 265's anymore.

John


J Lucas





1941 Chevy 1/2-Ton
1942 Chevy 1.5-Ton SWB
1959 Chevy Apache 31 Fleetside
1959 Chevy Apache 32 Fleetside
1959 Chevy Viking 40

My Flicker Photos! [flickr.com]

Re: Tiny small block V8
Hotrod Lincoln #1227214 Thu Jul 27 2017 02:31 AM
Joined: Feb 2004
Posts: 21,012
H
Boltergeist
The 305 actually has a slightly smaller bore than the 265, 3.736" instead of 3.750". 305 pistons have almost the right compression height to be used with a 2 7/8" stroke and a 6" connecting rod. By using the 305 high compression heads with some porting and slightly oversized valves, the majority of the parts will be 40 years newer than 265 stuff, and much more available. The heads also have the bolt holes for modern accessories like alternator mounts, power steering pump, etc. plus a serpentine belt system and water pump from a S-10 V6 will bolt right on. The only tricky part is getting the main bearing bores adapted to the small journal crank, and there's a set of race bearings for that application.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Tiny small block V8
Hotrod Lincoln #1227658 Sun Jul 30 2017 11:47 AM
Joined: Apr 2005
Posts: 2,612
C
Shop Shark
To get an idea of the power potential of a high winding engine in the late eighties BMW Formula One engines made 1200hp with a 91 cubic inch engine for qualifying and 900hp for racing. The present engines are limited to 145ci V6 turbo ones that make nearly 900hp at 15,000rpm. The bore is right at 3 7/8" and the stroke is just over ONE AND A HALF inches. The rules state the 15,000 rpm limit but with no (metal) valve springs they can turn 20,000rpm. Lots of power available in a screamer.


Evan
Re: Tiny small block V8
Hotrod Lincoln #1227683 Sun Jul 30 2017 02:05 PM
Joined: Feb 2004
Posts: 21,012
H
Boltergeist
Honda made a V8 race engine awhile back that had a displacement less than 2 liters (122 cubic inches). It ran in the "bumblebee on steroids" RPM ranges also. It's a lot of fun to build up fantasy engines with the "Desktop Dyno" program and see just how radical some combinations of bore, stroke, cam, and RPM can get. Electrons are a lot cheaper than cast iron and aluminum, also!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Tiny small block V8
Hotrod Lincoln #1227738 Mon Jul 31 2017 12:06 AM
Joined: Mar 2010
Posts: 9,443
5
Master Gabster
I used to have a '78 Fiat with a dual overhead cam 4 banger with a tach which had a 6,000 RPM redline.
I drove it like a girl for the longest time, shifting at around 2,000 RPM. Then I saw the 6,000 RPM redline. So I went for it and revved it up to 5,000 between shifts, and holy crap that little motor made some sweet music.
The only problem was, when I was running on 100 proof ethanol (me, not the engine), at unmentionable high speeds with the top down, the turbulence would push the back of my head off of the head rest.

Re: Tiny small block V8
tomctomc #1227783 Mon Jul 31 2017 06:54 AM
Joined: Mar 2008
Posts: 4,289
J
Shop Shark
Originally Posted by tomctomc
tA bare 215 block could easily be picked up with one hand.


As you're no doubt aware this engine was a staple for British Leyland in their Rover P5/6 and SD1 cars,Range Rover have used this in several displacements and derivatives for decades too.
As you say they're nice and light in fact they're lighter than F*rds 120c.u. 'Pinto' motor so well suited to many of our smaller European rods.

They've been 'rodder fodder' here too for many years,V8 sound and torque but with slightly better table manners than big inch American V8s,a big consideration here because of the price of gas.


I've definately got this truck thing in my blood ... my DNA sequence has torque settings

"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.

1950 Chevy Advance Design 3100 in Scotland
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