EGR with Vortecs
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
What induction do you plan to use?
Basically, you need to do what the late-'86 and on TPI Vettes w/aluminum heads did - route exhaust from the header/manifold to the cross-over passage of the intake. If you're going TPI, get a Vette-style base. If carb, you need to drill & braze a fitting onto the intake (or get a GM performance intake that has the hot air choke and EGR valve bosses - that's what the HO 350 Conversion kit does for the ZZ4).
If you have the Feb '02 edition of Chevy High Performance, they have a picture of the setup for the SD Vortec TPI base.
Basically, you need to do what the late-'86 and on TPI Vettes w/aluminum heads did - route exhaust from the header/manifold to the cross-over passage of the intake. If you're going TPI, get a Vette-style base. If carb, you need to drill & braze a fitting onto the intake (or get a GM performance intake that has the hot air choke and EGR valve bosses - that's what the HO 350 Conversion kit does for the ZZ4).
If you have the Feb '02 edition of Chevy High Performance, they have a picture of the setup for the SD Vortec TPI base.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Then it's the fabrication route, putting a fitting into the intake cross-over passage and routing a tube down to the exhaust.
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HoosierinWA
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Oct 7, 2015 10:15 AM