LS7 into a 68 - Team Camaro Tech
LSx Swap LSx Engines in Non-LSx Vehicles

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post #1 of 13 (permalink) Old Oct 1st, 16, 08:44 AM Thread Starter
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Anne
 
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LS7 into a 68

Nice swap article using all Holley parts :

LS Swap: Two Days For A Modern Upgrade

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post #2 of 13 (permalink) Old Oct 1st, 16, 08:52 AM
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Re: LS7 into a 68

So far I am very happy with my Holley swap kit!
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post #3 of 13 (permalink) Old Oct 1st, 16, 11:40 AM
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Re: LS7 into a 68

A 427 LS in a first gen .....wow. The difference between my mild build 6.0 LS in my camaro and the 7.0 LS in my corvette is night and day. Both engines are great but the corvette is just wild. Would really like to do a 7 liter in my 67 next time.

The article also mentioned "clunky" cast exhaust manifolds....but the corvette 7.0 manifolds are a thing of beauty. Welded assembly with big runner size.

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post #4 of 13 (permalink) Old Oct 1st, 16, 01:15 PM
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Re: LS7 into a 68

6.0 with a cam and shave the heads for a little more compression...500+ easy

Well, that's the route I took anyway.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #5 of 13 (permalink) Old Oct 1st, 16, 01:19 PM
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Re: LS7 into a 68

Good info, but not quite what most guys do as they want the advantages of fuel injection. The cost and complexity goes up along with quite a bit more time.


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post #6 of 13 (permalink) Old Oct 1st, 16, 02:03 PM
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Re: LS7 into a 68

Quote:
Originally Posted by jackr View Post
A 427 LS in a first gen .....wow. The difference between my mild build 6.0 LS in my camaro and the 7.0 LS in my corvette is night and day. Both engines are great but the corvette is just wild. Would really like to do a 7 liter in my 67 next time.

The article also mentioned "clunky" cast exhaust manifolds....but the corvette 7.0 manifolds are a thing of beauty. Welded assembly with big runner size.
Jack ..then throw 12 LBS of boost at it

Steve

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post #7 of 13 (permalink) Old Oct 1st, 16, 05:07 PM Thread Starter
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Re: LS7 into a 68

Quote:
Originally Posted by Vegas69RS View Post
So far I am very happy with my Holley swap kit!
Me too !

jackr: Would really like to do a 7 liter in my 67 next time.

I would too if those engines were affordable. Just imagine what a 7.0 L would do with a real cam in it.
I may stroke my 6.0 L to 408 in 3 years or so. Got to get this one running first!

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post #8 of 13 (permalink) Old Oct 1st, 16, 05:49 PM
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Re: LS7 into a 68

My cam only and headers in my LS7 69 yielded approx 640 flywheel at 6200

Building a LS7 441 stroker for my sons car now. Will be 720-740 HP NA
H20cooled likes this.
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post #9 of 13 (permalink) Old Oct 2nd, 16, 05:51 AM
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Re: LS7 into a 68

Should make that easy John


Quote:
707 HP at 7100 RPM & 578 Ft. Lbs. of torque at 5500 RPM.

403"
4.005" LS2 Block
Callies Compstar 4"crank and 6.125" Compstar rods
Bullet CP 11.5:1 compression flat top pistons
Dart Pro1 LS3 heads milled to 65 cc.
FelPro 1161-.041 MLS gaskets
247/259 110.5+3.5 .660"/.650" Cam Motion Low Lash Roller
Edelbrock Victor Jr. intake
835 CFM 4150 Holley
1 7/8" ARH headers
Melling 10295 pump and a Mast Oil Pan.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53

Last edited by DOUG G; Oct 2nd, 16 at 06:04 AM.
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post #10 of 13 (permalink) Old Oct 2nd, 16, 08:18 AM
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Re: LS7 into a 68

Quote:
Originally Posted by Sheck44 View Post


Jack ..then throw 12 LBS of boost at it

Steve
Indeed. That has always been in the plan. There are a few things I wanted to do first, suspension is in work right now, then bigger brakes, then back to the engine.

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post #11 of 13 (permalink) Old Oct 2nd, 16, 09:30 AM
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Re: LS7 into a 68

Keep in mind LS7 is not a boost friendly engine. Pistons are the week link so if you plan run over 6 psi you'll need new forged pistons.

If planning on boost a much more cost effective route would be LS3 with a ZL1 take off blower.

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post #12 of 13 (permalink) Old Oct 2nd, 16, 10:28 PM
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Re: LS7 into a 68

Quote:
Originally Posted by Vega$69 View Post
Keep in mind LS7 is not a boost friendly engine. Pistons are the week link so if you plan run over 6 psi you'll need new forged pistons.

If planning on boost a much more cost effective route would be LS3 with a ZL1 take off blower.
Stock LS7 bottom end will run 14psi boost all day long with out an issue. Pistons are not the weak link. In my experience.

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post #13 of 13 (permalink) Old Oct 3rd, 16, 03:11 AM
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Re: LS7 into a 68

Totally agree with John on the more eco $ route ... my plan has always been to build something crazy that very few people have so this is the reason I went E-Force supercharged LS7, in the end this also significantly increases the value of the car which as you know I am going to sell anyway.

Everyone should know that there is serious LS7 'tax' that goes with installing one of these ...
Fix the heads / wet sump conversion etc ...

If I was going to build a car for me, I'd do exactly what John is doing ... a bad a$$ NA LS7, and as I have said before 700 torque at the rear wheels is way too much for a street car ... it's simply insane.

And from my very little knowledge .. safety for the boosted LS7 is all about the tuning, and running meth (as I do)

Cheers
Steve

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