LS and factory heater core box - Team Camaro Tech
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post #1 of 25 (permalink) Old Sep 17th, 17, 08:00 AM Thread Starter
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Paul
 
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LS and factory heater core box

just bought a LS1 for my 69, in all LS swap pics I've seen everybody has smoothed firewall, does the LS hit the factory heater core box if using factory heater core non AC?

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post #2 of 25 (permalink) Old Sep 17th, 17, 10:23 AM
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Don
 
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Re: LS and factory heater core box

Quote:
Originally Posted by Paul O View Post
just bought a LS1 for my 69, in all LS swap pics I've seen everybody has smoothed firewall, does the LS hit the factory heater core box if using factory heater core non AC?
Holley mounts will let it clear. Not sure about the others.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
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post #3 of 25 (permalink) Old Sep 17th, 17, 02:16 PM
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Re: LS and factory heater core box

Mine is 3/4" off the firewall....maybe....but if you used the Dirty Dingo mounts, you could put it where you want as long as you're OK with moving the trans forward too ?...I kept mine in stock location.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #4 of 25 (permalink) Old Sep 17th, 17, 04:31 PM
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Garth
 
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Re: LS and factory heater core box

Holley setup here with big block heater cover. No issues.

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2015 Z/28 - Red
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post #5 of 25 (permalink) Old Sep 17th, 17, 05:21 PM Thread Starter
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Re: LS and factory heater core box

is the big block heater cover different than small block?

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post #6 of 25 (permalink) Old Sep 17th, 17, 05:31 PM
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Re: LS and factory heater core box

Quote:
Originally Posted by Paul O View Post
is the big block heater cover different than small block?
Yep. It is shorter.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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post #7 of 25 (permalink) Old Sep 17th, 17, 06:29 PM
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Re: LS and factory heater core box

If you need a factory BB outer heater cover, let me know. I have a spare one.

Chris
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post #8 of 25 (permalink) Old Sep 17th, 17, 06:33 PM
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Re: LS and factory heater core box

I don't think the cover itself is that different in dimension, difference is heater core outlets. Small block is toward to driver's side of the cover and big block is in the middle.

I,would think the small block routing would be okay, my experience was with the big block cover.

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post #9 of 25 (permalink) Old Sep 17th, 17, 06:53 PM
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Re: LS and factory heater core box

Quote:
Originally Posted by 69L48Z27 View Post
I don't think the cover itself is that different in dimension, difference is heater core outlets. Small block is toward to driver's side of the cover and big block is in the middle.

I,would think the small block routing would be okay, my experience was with the big block cover.
My mistake. You are correct.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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post #10 of 25 (permalink) Old Sep 17th, 17, 07:04 PM
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Re: LS and factory heater core box

You need a BBC heater core and cover.

You can also buy jus a core and use a neat kit that adapts the SBC box to work with the BBC cover.

Did it on Rob's 67 LS3 swap and worked great.

You don't even have to pull the cover.

67-69 CAMARO 70 NOVA SMALL BLOCK HEATER BOX COVER CONVERSION TO BIG BLOCK COVER https://www.ebay.com/i/192308281386
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post #11 of 25 (permalink) Old Sep 17th, 17, 07:20 PM
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Re: LS and factory heater core box

Holley mounts do not require a BB heater core and cover because they place the engine further forward. I would post a pic but I don't have the patience to mess with it. Google it. Images - Holley LS mounts camaro firewall....

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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post #12 of 25 (permalink) Old Sep 17th, 17, 07:42 PM
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Quote:
Originally Posted by dhutton View Post
Holley mounts do not require a BB heater core and cover because they place the engine further forward. I would post a pic but I don't have the patience to mess with it. Google it. Images - Holley LS mounts camaro firewall....

Don
I believe the Holley kit moves the engine 1 1/2" forward and down perhaps enough the clear the SBC heater core hose connections.

All the cars I've done except Rob's had aftermarket AC.

In his we wanted the engine in the stock location to work with the TKO600 and console he had already installed with his SBC.
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post #13 of 25 (permalink) Old Sep 18th, 17, 02:47 AM
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Re: LS and factory heater core box

IF you keep the trans in the stock location (using set-back mounts)....the motor is 3/4" or so off the firewall.
I opted to remove 1/2 of my box so I could keep the fan, but loose the heater core (leaked anyway).

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #14 of 25 (permalink) Old Sep 18th, 17, 12:38 PM Thread Starter
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If I use the Holley mounts where will it place my TKO 600 5spd?

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post #15 of 25 (permalink) Old Sep 18th, 17, 01:51 PM
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Re: LS and factory heater core box

Quote:
Originally Posted by Paul O View Post
If I use the Holley mounts where will it place my TKO 600 5spd?
Send a PM to DT. He has done it.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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1956 Cameo project - C5 drivetrain
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