Important if you run D-H/S or SA

James L Miller · 02-02-2017, 05:16 PM

The LD340 is on the 1971 blueprint specs, but not the 1972 340.

I need to submit one of my W2 heads that I was told was factory installed on the "Tunnel Port 318" that came with an 850 Holley and .525" lift cam. Those are extremely rare these days. You had to have the secret option code, BS1. Only a few dealers even knew about it. Factory rated at 205HP due to the extremely restrictive log style 318 exhaust manifolds.

02-02-2017, 05:16 PM	#8
James L Miller Member Join Date: Apr 2005 Posts: 494 Likes: 6 Liked 25 Times in 16 Posts	Re: Important if you run D-H/S or SA The LD340 is on the 1971 blueprint specs, but not the 1972 340. I need to submit one of my W2 heads that I was told was factory installed on the "Tunnel Port 318" that came with an 850 Holley and .525" lift cam. Those are extremely rare these days. You had to have the secret option code, BS1. Only a few dealers even knew about it. Factory rated at 205HP due to the extremely restrictive log style 318 exhaust manifolds. __________________ Mopar 2 Ya!