350 crate engine - Impala Tech
Engine General Engine Discussion.

 1Likes
  • 1 Post By wk2hons
 
LinkBack Thread Tools
post #1 of 11 (permalink) Old 06-02-2019, 07:28 PM Thread Starter
 
 
Join Date: Jan 2019
Location: Rochester, N.Y.
Posts: 19
 
350 crate engine

I just put a new 350 crate engine in a 67 Impala. Before I dropped the dist. in I made a shaft to fit the oil pump shaft and when turning it by hand it feels like a glitch in it (not smooth). When I drove the shaft with a cordless drill it sounded like it was grinding. I put a lot of time putting this engine in properly. Please advise if this is normal or not. Thanks
wk2hons is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 06-02-2019, 08:05 PM
Moderator
 
Join Date: Jan 2006
Posts: 12,304
 
Two issues is the fact that the tang and slot will not drive evenly. That is the tang will want to walk to one side of the slot or the other where it will hit the casting wall. Second not only do you need the bottom portion of the distributor to hole the tang centered in the slot but it will never prime any way. The oil has to flow around the distributor base to get into the oil galleries. Without the lower portion in place oil comes up and just dumps into the distributor hole with out ever feeding the lifter galleries.

This article about distributor gears shows a close up of the bottom of the distributor with the groove cast in it to channel the oil.

https://www.onedirt.com/tech/engine/...compatibility/

You can see what you need on this Chevy Oil pump priming tool from ProForm:

https://www.summitracing.com/parts/p...hoCP30QAvD_BwE

Big Dave
Big Dave is online now  
post #3 of 11 (permalink) Old 06-02-2019, 10:40 PM Thread Starter
 
 
Join Date: Jan 2019
Location: Rochester, N.Y.
Posts: 19
 
Thanks, That's a lot to absorb, but I understand most of it. Bottom line should I continue and start the engine? I have the break in oil in it, just have to put water pump and radiator and coolant.
wk2hons is offline  
 
post #4 of 11 (permalink) Old 06-03-2019, 10:02 AM
Moderator
 
Join Date: Jan 2006
Posts: 12,304
 
Pre-oiling prevents premature wear as parts start up dry. To minimize wear you should have everything installed and adjusted to run. You have to vary the RPM on break in so there won't be time for extended idling to adjust timing and carb. Motor must be provided cool water or installed in car with cooling system fully functional. If you have a flat tappet cam you can loose it in the first ten minutes of the start up.

Big Dave
Big Dave is online now  
post #5 of 11 (permalink) Old 06-04-2019, 09:20 AM Thread Starter
 
 
Join Date: Jan 2019
Location: Rochester, N.Y.
Posts: 19
 
350 crate engine

I am really in trouble. I used the proper tool to pre-lube the engine, and the oil pump sounds like a meat grinder. I got this engine from Jegs and they are making me contact the manufactor . Im shore they will send me a new oil pump and pan gasket. now i have to decide to pull the engine back out, or raise it to get the oil pan off, which I don't know if that's even possible.
wk2hons is offline  
post #6 of 11 (permalink) Old 06-04-2019, 09:48 AM
Moderator
 
Join Date: Jan 2006
Posts: 12,304
 
With a lift and a Power Pack hydraulic tool it can be done, but for the hobbiest it is easier to pull the motor and put it back on an engine stand.

If this is a GMPP crate motor you could haul the car to the dealership for them to fix it for free. If it wasn't built by GM you are on your own. This illustrates the difference between a warranty and a guarantee.

Big Dave
Big Dave is online now  
post #7 of 11 (permalink) Old 06-04-2019, 10:12 PM
BA.
Moderator
 
Join Date: Aug 2008
Location: Miamisburg, Oh.
Posts: 3,116
Blog Entries: 15
 
I'm with Dave on all that oiling info.
I would not personally start the engine without a real good prime and fresh oil on the lifters and rocker arms.
If you really suspect the pump, I'd say go ahead and pull the engine back out.
But first if see if that new one feels better.

Do you have an oil pressure gauge installed?

Sent from my XT1254 using Tapatalk

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
BA. is offline  
post #8 of 11 (permalink) Old 06-12-2019, 07:22 PM Thread Starter
 
 
Join Date: Jan 2019
Location: Rochester, N.Y.
Posts: 19
 
I ended up pulling the engine, putting it on an engine stand and pulling the oil pan and replacing the oil pump. I had to buy the pump, pan gasket silicone,and more break in oil. The engine manufacturer is going to send me a check in the mail. Man what a lot of work. The new oil pump was very smooth. The original one locked up as I rotated it by hand.
BA. likes this.
wk2hons is offline  
post #9 of 11 (permalink) Old 06-13-2019, 12:11 PM
Senior Member
 
Join Date: Jan 2018
Location: Coopersville, MI
Posts: 257
 
I personally prefer to run an engine in a test stand before installing it, be it one I build or one I buy complete. This way I can check oil pressure and tune the carburetor before dropping it between the frame rails. Also I get to inspect the break in oil before dropping it in and see if I have any metal or stuff that isn't supposed to be in the oil in the oil. Have a weird noise I can figure it out before it is in the car also.
Deadwolf is offline  
post #10 of 11 (permalink) Old 06-13-2019, 12:18 PM
Moderator
 
Join Date: Jan 2006
Posts: 12,304
 
I used to test the stock motors that I built for used car lots on a test stand in front of the owner to be sure that the buyer was aware that I had fulfilled my end of our contract, but all performance engines went on an engine dyno for testing and tuning before delivery.

Big Dave
Big Dave is online now  
post #11 of 11 (permalink) Old Today, 06:45 AM Thread Starter
 
 
Join Date: Jan 2019
Location: Rochester, N.Y.
Posts: 19
 
With the new oil pump the engine pre lubed fine. I used an old distributor with the gear teeth machined off to, run with a drill. Broke in the cam. Engine is running great. all ready put 200 mi on it.
wk2hons is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome