Carbed LS376/515 HP - Lateral-g Forums

paulk68 · #1 03-25-2013, 04:39 AM

Hey Guys, I am considering this motor for my 1968 camaro. Trying to see if anyone has run this and what there thoughts are. Also what is involved in swapping this into a 68 camaro? From what i have been reading adding the FI adds some extra steps but what about the carbed version. Thank you
Paul

**GregWeld** · #2 03-25-2013, 01:26 PM

Quote:

Originally Posted by paulk68

Hey Guys, I am considering this motor for my 1968 camaro. Trying to see if anyone has run this and what there thoughts are. Also what is involved in swapping this into a 68 camaro? From what i have been reading adding the FI adds some extra steps but what about the carbed version. Thank you
Paul

Super simple swap - and all parts are readily available.... You'll have to add an electric fuel pump... LS motors don't have fuel pumps. And if you want to run coil on plug then you need a controller.... Edelbrock has a complete kit for you already set up.

You'd LOVE the carbed version of this motor.... although it's really built to be blown... and is a bit low on the compression side of things - it would work perfectly with todays crappy pump gas.

XLexusTech · #3 03-25-2013, 05:24 PM

Quote:

Originally Posted by GregWeld

Super simple swap - and all parts are readily available.... You'll have to add an electric fuel pump... LS motors don't have fuel pumps. And if you want to run coil on plug then you need a controller.... Edelbrock has a complete kit for you already set up.

You'd LOVE the carbed version of this motor.... although it's really built to be blown... and is a bit low on the compression side of things - it would work perfectly with todays crappy pump gas.

Is this motor supercharger Built? I am looikng at the 480 HP version against the LSA..

**GregWeld** · #4 03-25-2013, 08:13 PM

When we were deciding and ultimately ordered the LSX 376 for the '62 Impala --- I wanted the LSX 454 --- but the compression on the 376 is 9.0 vs the 11.0 of the 454 ---- and even GM Performance "advertises" the 376 as being built for supercharged or turbo'd.

Mine had a TVS 2300 blower added to it...

I have the 480hp LS3 in my '33 Ford being built at Brizio's.

Plenty of motor for a little '33 highboy!

http://www.roybriziostreetrods.com/p...weld/index.htm

**Sieg** · #5 03-25-2013, 10:18 PM

This Chevrolet Performance LS 376/515 hp is 10.7:1 comp:
http://www.jegs.com/i/GM+Performance...Fc5_QgodkUkAEw

paulk68 · #6 03-26-2013, 01:26 AM

Quote:

Originally Posted by Sieg

This Chevrolet Performance LS 376/515 hp is 10.7:1 comp:
http://www.jegs.com/i/GM+Performance...Fc5_QgodkUkAEw

Yeah that is the one i am lookingf at. Looks like a nice motor what do you think?

**Sieg** · #7 03-26-2013, 05:10 AM

Quote:

Originally Posted by paulk68

Yeah that is the one I am looking at. Looks like a nice motor what do you think?

Personally I'd love to have that in my car..............and I'd run the exhaust manifolds! My question would be> Do I run a Holley Ultra HP 850 or FAST EZ-EFI or a choked vac secondary carb?

515 hp is a bunch for a street car and more than adequate for a good time on the track. Hobaugh's Corvette is a good example of not needing 600 hp to be competitive. All said and done the EZ-EFI is not going to cost much more than a good carb if you factor tuning time or a competent tuner, tuning components expense, etc. Same simplicity applies to the exhaust manifolds, do you need to spend $1500 on headers for extra power vs the heat, noise, and tight clearances they create?

paulk68 · #8 03-26-2013, 05:53 AM

Quote:

Originally Posted by Sieg

Personally I'd love to have that in my car..............and I'd run the exhaust manifolds! My question would be> Do I run a Holley Ultra HP 850 or FAST EZ-EFI or a choked vac secondary carb?

515 hp is a bunch for a street car and more than adequate for a good time on the track. Hobaugh's Corvette is a good example of not needing 600 hp to be competitive. All said and done the EZ-EFI is not going to cost much more than a good carb if you factor tuning time or a competent tuner, tuning components expense, etc. Same simplicity applies to the exhaust manifolds, do you need to spend $1500 on headers for extra power vs the heat, noise, and tight clearances they create?

It does look like a really fun engine for the street/ocassional track visit. I think for that price it actually comes with the carb if i read the directios sheet correctly

**Sieg** · #9 03-26-2013, 06:18 AM

Quote:

Originally Posted by paulk68

It does look like a really fun engine for the street/ocassional track visit. I think for that price it actually comes with the carb if i read the directions sheet correctly

I don't read the Jeg's listing as including a carb. Who are you considering buying it from?

I'd also review a dyno sheet to confirm the torque curve. Torque will make the biggest daily driving impression unless you spend a lot of time above 4K rpm.

paulk68 · #10 03-26-2013, 06:29 AM

Quote:

Originally Posted by Sieg

I don't read the Jeg's listing as including a carb. Who are you considering buying it from?

I'd also review a dyno sheet to confirm the torque curve. Torque will make the biggest daily driving impression unless you spend a lot of time above 4K rpm.

I will call, but I found this on the instructions tab on that jegs page it also has the dyno graph. looks like around 475 for the TQ

Carburetor
GM Performance Parts Carburetor part number 19201993 is included with the LS376/515 crate engine. This is a
Holley 4160-style 770 cfm carburetor and features dual feed, center hung float bowls, vacuum secondaries and
automatic electric choke. Instructions and specifications are included in the carburetor package