Engine to chassis ground strap [Archive] - Chevy Nova Forum

: Engine to chassis ground strap


walkerjay
1st-December-2010, 02:47 AM
Summit has some 8"and 14" straps. Where is the best spot to mount the strap? Engine block to idler or pitman arm bolt ok?

1quik69
1st-December-2010, 03:26 AM
Ground strap should go from engine block to frame and engine block to body. You don't want to connect to anything that moves.

Paul Wright
1st-December-2010, 09:51 AM
Terminal Supply in Troy Michigan for pre-made ground straps, rolls of grounding braid to make your own, and any electrical connectors.

mwb71nova
1st-December-2010, 11:58 AM
From the factory most had a ground strap from each valve cover to the firewall, and then from the firewall to the frame. You can purchase it at:

http://www.ss396.com/mm5/merchant.mvc?Screen=PROD&Store_Code=Nova&Product_Code=APJ-5240

I did mine different because I wanted to clean up the fire wall. There is a screw that holds the lower bracket of your heater, it comes out through the firewall into the engine compartment. I replaced the screw with a bolt and grounded both ground wires there. Once my engine and distr. are installed you wont see it. And the ground strap from my frame to the firewall is wrapped in black shrink wrap to cover up the copper wire.

You should be able to see the ground strap on the PS frame to the firewall.
http://i816.photobucket.com/albums/zz85/71ss/100_1299.jpg

The Big Al
1st-December-2010, 12:23 PM
Every automotive parts store carries ground straps.

Even Autozone!:eek::eek::eek:

I run it from the engine block to the sub-frame. And from sub-frame to body. (if no frame connectors.)

AL

veno
1st-December-2010, 12:49 PM
Grounds.. prolly 90% of the electrical problems in the cars for the 1950's through the 1970's....

if you battery is in the trunk.. you need different grounding then that of factory...

if your factory.... then.. a ground strap went from the back of the passenger side head to the fire wall both had star washers... a ground strap was from the passenger side sub frame to the fire wall as well...

Plowman
1st-December-2010, 12:55 PM
Braided ground straps are the best. They get rid of unwanted or unknown electrical gremlins.

The Big Al
1st-December-2010, 02:09 PM
http://img140.imageshack.us/img140/4153/wateroutlet007a.jpg

veno
1st-December-2010, 02:41 PM
Braided ground straps are the best. They get rid of unwanted or unknown electrical gremlins.

ok.. I'll bite.. why are braided better than insulated??

jtheaceman
1st-December-2010, 02:52 PM
Because they are shiney! :rolleyes:

veno
1st-December-2010, 03:11 PM
:rotfl::rotfl::rotfl::rotfl::attention:

walkerjay
1st-December-2010, 04:01 PM
From the factory most had a ground strap from each valve cover to the firewall, and then from the firewall to the frame. You can purchase it at:

http://www.ss396.com/mm5/merchant.mvc?Screen=PROD&Store_Code=Nova&Product_Code=APJ-5240

I did mine different because I wanted to clean up the fire wall. There is a screw that holds the lower bracket of your heater, it comes out through the firewall into the engine compartment. I replaced the screw with a bolt and grounded both ground wires there. Once my engine and distr. are installed you wont see it. And the ground strap from my frame to the firewall is wrapped in black shrink wrap to cover up the copper wire.

You should be able to see the ground strap on the PS frame to the firewall.
http://i816.photobucket.com/albums/zz85/71ss/100_1299.jpg

Thanks for the pics. Looks great and easy to see the various setups. I like your somewhat hidden strap locations

walkerjay
1st-December-2010, 04:04 PM
http://img140.imageshack.us/img140/4153/wateroutlet007a.jpg

Yea, that there looks like a great spot. I like the silver vs. the copper. That extra slack would bug me but you probably need that much to allow for wheelies and twisting, huh Al?

walkerjay
1st-December-2010, 04:06 PM
Grounds.. prolly 90% of the electrical problems in the cars for the 1950's through the 1970's....

if you battery is in the trunk.. you need different grounding then that of factory...

if your factory.... then.. a ground strap went from the back of the passenger side head to the fire wall both had star washers... a ground strap was from the passenger side sub frame to the fire wall as well...

Factory setup always works. And I should scrape a bit of paint away for good contact to bare metal, right?

veno
1st-December-2010, 04:56 PM
http://img140.imageshack.us/img140/4153/wateroutlet007a.jpg

Hey al.. you do know that lower hose does not connect to the harmonic balancer dont ya?:D


Factory setup always works. And I should scrape a bit of paint away for good contact to bare metal, right?

yep

1quik69
1st-December-2010, 05:44 PM
Factory setup always works. And I should scrape a bit of paint away for good contact to bare metal, right?

Yes, you need to scrape the paint off. You need bare metal for a good contact. I always sand the spot or rough it up where I am connecting the ground wire.

taz3
1st-December-2010, 06:12 PM
You should ground the block to subframe, block to fire wall (Cylinder head is good to use for the firewall too) and firewall to subframe.

The Big Al
1st-December-2010, 06:57 PM
Hey al.. you do know that lower hose does not connect to the harmonic balancer dont ya?:D


Dam! Thats where the coolant's been going! SOB!! :eek:

1quik69
1st-December-2010, 08:28 PM
http://img140.imageshack.us/img140/4153/wateroutlet007a.jpg


Did you know there is no cover over your fuel pump mounting flange?? Must have something to do with that rad hose.:devil::yes:

walkerjay
1st-December-2010, 10:00 PM
Al....you got a leaf on your subframe. I love the fall...

nova greg
2nd-December-2010, 03:28 PM
I have all my grounds going to the bolt that holds the fuel pump rod up when changing pumps. Batt. neg. to engine block,frame to engine block, body to engine block. And as was stated earlier make sure grounds are clean. I also use Dieilectric grease .

bowtie0069
2nd-December-2010, 04:39 PM
I used to run #2 copper wire soldered to tinned copper lugs, but everything has solid mounts so I don't have any grounds now except battery to frame in the back. On one of the front rails I have a ground lug welded on for accessory stuff-water pump, electric fan, line lock, etc...