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2/12/15 3:54am - Reply: 'Re: LS engine swap almost completed!'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 829
Awesome job!  Looks great.  Are you going to have it dyno'd?  Did you sell the ZZ4?

I've been thinking about a 5.3 or even 6.0 LS for my '91 Suburban but I'm probably going to just build one of the TBI 350s I have into a vortec 383.  I'm always up for a challenge but maybe not THAT much of a challengeSmile


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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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2/12/15 9:03am - Reply: 'Re: LS engine swap almost completed!'
manchestershark Lifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.

Joined: 10/31/2007
Posts: 1895
Thumbs Up  10-4 on the throttle sticking!  Is the rev limiter hooked up? It gets up there WAY to quick. Can't shift it quick enough.Cool 

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3/5/15 8:52am - Reply: 'Re: LS engine swap almost completed!'
cinor Lifetime Member
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, - Canada

Vette(s):
1975 L48 Stingray 1992 LT1

Joined: 12/24/2013
Posts: 277
"Nice"  the only problem about hearing about how great it is makes me think ...... maybe i should do this and this to mine,,,, after all it is in pieces how hard would it be to beef it up.

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3/7/15 12:17pm - Reply: 'Re: LS engine swap almost completed!'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
I finally have a break from the snow to hang out for awhile.

Dave, I will have it on the dyno this spring. We ran out of time this past fall to get the final tuning done. I did sell the old crate engine. Got $1700 for it. It now lives in a '68 Biscayne wagon. Doing a LS swap into a "Square body" GM truck is much simpler. I would do it if I were you. Evil Smile

Mark, we set the rev limiter to 6500 rpm's. It's amazing how quick it revs. This actually created a problem with shifting the Tremec TKO 5 spd. TKO500's don't like high rpm's. Knowing what I know now, I would have used a T56 or Tremec 6060 6 speed instead. I had to yank the TKO out and have carbon fiber syncro's and brass shift fork pads installed to help with the high rpm shifts. 
TKO's are a hodgepodge of truck and car parts I guess. Joel would know more about these than me. 

Cindy, now's the time to do it with the body off. It is a big undertaking but not impossible. Time, patience and research is the key. It will cost you around $6k to do. The other alternative to modernizing your car is to go with a throttle body injection unit from FAST, Edelbrock, MSD, or one of the other companies. These bolt right in place of the carburetor and most have a self learning computer so they tune themselves. It about half the cost. Right around $3k to do. Much more reliable and responsive than a carb. 


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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


Lifetime Member #26
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