CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
July 31, 2014, 08:48:52 PM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
102525 Posts in 12094 Topics by 4669 Members
Latest Member: paulmanta
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Decoding/Numbers
| | |-+  Forged crank 3815822 is there...
« previous next »
Pages: [1] 2  All Print
Author Topic: Forged crank 3815822 is there...  (Read 5643 times)
opelitis1
Member
***
Posts: 261


View Profile Email
« on: October 22, 2008, 09:07:20 AM »

Going through my cranks (not wife and mother-in-law) types but, the forged steel  units.  I came across 2 of the above 3815822 and I wonder, is there a mark or coding on these shafts that would define it or them for 302 usage???
Thanks!  Ted
Logged
tom
Hero Member
*****
Posts: 1133


View Profile WWW Email
« Reply #1 on: October 22, 2008, 09:22:28 AM »

I beleive 302 cranks would have a 3 inch throw. You should be able to measure if nothing else.
Logged

69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speedo
RAfbody
Member
***
Posts: 179


View Profile Email
« Reply #2 on: October 22, 2008, 09:25:08 AM »

The 302 cranks were tuffrided, the 283 cranks were not.  Either way they do not comand big money like the large journal 302 cranks.  Plus, once the crank is turned you lose the tuffriding anyway.
Logged

Russ
jdv69z
Hero Member
*****
Posts: 620


69 RS Z/28 52E


View Profile Email
« Reply #3 on: October 22, 2008, 09:35:10 AM »

Going through my cranks (not wife and mother-in-law) types but, the forged steel  units.  I came across 2 of the above 3815822 and I wonder, is there a mark or coding on these shafts that would define it or them for 302 usage???
Thanks!  Ted

I believe the 302 crankshaft has a notch in the flywheel flange, (kinda looks like "Pac Man" when view from the end) where a 283 crank has no notch. Check Colvin's By the Numbers. Both are 3" stroke I think.

Jimmy V.
Logged

Jimmy V.
JohnZ
CRG Member
*****
Posts: 4051


View Profile Email
« Reply #4 on: October 22, 2008, 12:18:12 PM »

The 302 large-journal crank flange looks like the photo below.
Logged

'69 Z/28
Fathom Green
CRG
opelitis1
Member
***
Posts: 261


View Profile Email
« Reply #5 on: October 22, 2008, 12:41:25 PM »

The  3815822 cranks I have are 360 degrees (no notch) flywheel flanges..  According to what I have read, these are good on 283 and 302 Small  journal engines..  The both cranks are 10 / 10
mains n' rods meaning I guess the tuffriding layer is gone...  Was there an "X" or another type coding on these cranks de-noting early 302 e.g. 1967 + 1968 S J  usage Huh  Thanks!!  Ted
Logged
Classic Gary
Member
***
Posts: 46


View Profile Email
« Reply #6 on: October 22, 2008, 11:29:10 PM »

The 302 large-journal crank flange looks like the photo below.

both large AND small journal 3" cranks have a round with notch flywheel flange.
283 cranks are lighter than 302 cranks, 302 pistons are bigger and heaver.
Logged

opinions are like wallets, some just aren't worth stealin'.
RAfbody
Member
***
Posts: 179


View Profile Email
« Reply #7 on: October 23, 2008, 10:06:34 AM »

The only difference in the 822 cranks used in the 302 is the tuffriding.  The 822 cranks that were in 283's had the notch in them as well.  The one in the middle is the 302 crank.
Logged

Russ
opelitis1
Member
***
Posts: 261


View Profile Email
« Reply #8 on: October 27, 2008, 05:25:08 AM »

Morning Gennamen!!! The 3815822 forged units that I have are not notched and are 360 round... What numbered cranks came out on 302s for '67 as they were SJ units at that point in time??? Maybe they used 5822 cranks in '67  and had to re-balance them by putting the  notch in the 360 degree flange???  Ted
Logged
jdv69z
Hero Member
*****
Posts: 620


69 RS Z/28 52E


View Profile Email
« Reply #9 on: October 27, 2008, 10:08:27 AM »

I was under the impression that the 283 cranks were not notched. That's what shows in Colvin's CBT. Not sure now what's what.

Jimmy V.
Logged

Jimmy V.
Classic Gary
Member
***
Posts: 46


View Profile Email
« Reply #10 on: October 27, 2008, 10:31:03 AM »

to detail
The 302 large-journal crank flange looks like the photo below.

both large AND small journal 3" cranks have a round with notch flywheel flange.
283 cranks are lighter than 302 cranks, 302 pistons are bigger and heaver.
to detail my post better:  283 cranks do not have a notch, are 360 degree round. 302 cranks have notch/ pistons are heaver.
Logged

opinions are like wallets, some just aren't worth stealin'.
opelitis1
Member
***
Posts: 261


View Profile Email
« Reply #11 on: October 27, 2008, 10:38:53 AM »

Yowzzur!!!    Finally got it through my scobe.
Thanks Classic Gary...
Ted
Logged
glenn64vette
Member
***
Posts: 33


View Profile
« Reply #12 on: October 28, 2008, 05:59:16 PM »

to detail
The 302 large-journal crank flange looks like the photo below.

both large AND small journal 3" cranks have a round with notch flywheel flange.
283 cranks are lighter than 302 cranks, 302 pistons are bigger and heaver.
to detail my post better:  283 cranks do not have a notch, are 360 degree round. 302 cranks have notch/ pistons are heaver.

Just to let you know, in the 80's, I came across "2" 283 cranks with the pie cut in the flange. They were both from NOVA 283s. Just a little information for you guys.
Logged
RAfbody
Member
***
Posts: 179


View Profile Email
« Reply #13 on: October 28, 2008, 10:07:27 PM »

The picture I posted above shows 2 283 cranks with the notch cut out of them and a 302 crank in between them.  One of the 283 cranks I removed from the 283 myself  and the other 283 crank was one my dad had laying around.  All 3 of these cranks are 822 castings.
Logged

Russ
opelitis1
Member
***
Posts: 261


View Profile Email
« Reply #14 on: October 29, 2008, 07:59:31 AM »

Oh Oh, the 5822 cranks I have are not notched and are forged small journals...  Is there anywhere or any other coding(s) on the cranks that I can look for that will be define what the heck dese things came outta???  Are these dated somewhere?? That would cut down the possibility of a 302 part if these were date coded in '64 or earlier??? Getting a mite murky again, maybe I do have a 5822 non-notched 302 small journal crankshaft???
Thanks!!!   T. 
Logged
Pages: [1] 2  All Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.08 seconds with 18 queries.