LS conversion & 4 speed ??
Thread Starter
Heel & Toe
Joined: Dec 2002
Posts: 17
Likes: 0
From: Calgary AB
LS conversion & 4 speed ??
I'm going to swap a 5.3 LS truck motor in my 71 Vette ... I wanna keep the stock 4 speed manual trans, so not sure what conversion motor mounts I need. The regular ones or the 1" set back? I don't want to move the location of the stock 4 speed trans.
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Get the 1" setback from speedhound and his z bar mount.
Do you have a 10 or 26 spline input shaft?
Do you have a 10 or 26 spline input shaft?
Thread Starter
Heel & Toe
Joined: Dec 2002
Posts: 17
Likes: 0
From: Calgary AB
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
All the setback plates look to be pretty close. Speedhound also supplies a Z bar mount. With the mechanical clutch linkage there is a Z bar transfers the clutch pedal to the throwout bearing. It bolts to the frame and block. The 5.3 block doesn't have a mount for it. Speedhound sells a mount for this.
Other stuff you'll need:
621 BBC bell housing, keisler sells one with the extra Ls/LQ mount hole, adjustable stud, and correct vette arm.
LS7 pilot bearing
Longer throwout bearing
LS1 flywheel/clutch/pressure plate (if 26 spline input shaft)
Other stuff you'll need:
621 BBC bell housing, keisler sells one with the extra Ls/LQ mount hole, adjustable stud, and correct vette arm.
LS7 pilot bearing
Longer throwout bearing
LS1 flywheel/clutch/pressure plate (if 26 spline input shaft)
Thread Starter
Heel & Toe
Joined: Dec 2002
Posts: 17
Likes: 0
From: Calgary AB
Picked an 06 5.3 LS motor and cleaned it up ... now just looking for an LS1 intake and oil pan. Can I swap an LS1 intake onto the 5.3 and still use the truck injectors, rails and throttle body?
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Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Yes, the LS1 intake will fit fine. You'll need new LS1 intake gaskets and bolts.
You can use the truck TB on the LS1 intake.
See if you can get a LS1 intake with fuel rail and injectors. Then you'll just need the LS1 injector pigtails for wiring. The truck injectors/rail can be made to work, but not worth the effort.
For a pan, the f body ones are expensive, best deals are on the winged vette ones on ebay.
You can use the truck TB on the LS1 intake.
See if you can get a LS1 intake with fuel rail and injectors. Then you'll just need the LS1 injector pigtails for wiring. The truck injectors/rail can be made to work, but not worth the effort.
For a pan, the f body ones are expensive, best deals are on the winged vette ones on ebay.
