Zfan1

I decided to get away from the nitrous scene after 20 years and went over to the dark side (turbos). The car is a 1970 240Z with a built LSX436 with LS3 Frankenstein heads/4L80E and twin Precision 66 .82 ar turbos on E85. I still have a lot of work to do before she hits the streets again but I am really looking forward to it. So much to learn, Holley Terminator EFI, E85, fuel systems etc. Cheers Mike

Actually was looking into a 6L90, waiting to see how my friend likes his LS3/6L90 combo first.

Been gone a while I guess. We fabricated our mount for the 4L80E and had to make room for the trans control plug on the drivers side. Other than that it was pretty straight forward. I am now going twin turbo with my 436 LSX and converting over to E85, it never ends...lol Mike

Looking at ditching my nitrous system on my LSX 436 and adding some dual Borg Warner S366's 66/73. In order to do this and make it street friendly I will need to drop my compression down from 11.3 to 1...yikes. I am currently running a single bouche 044 pump but will have to add another one to the mix, do you plan on pump gas (93) octane or E85? I am on the fence as to which one to choose, I hate the thought of chasing E85 around plus the winter blends suck. Very nice set up by the way, looking forward to hearing more about it! Mike

Any pictures of intake manifold, would love to do something like that with a direct port nitrous set up.

A narrowed 9" is probably overkill, maybe an 8.8" narrowed would be a good option. Plenty of those to be found.

What pinion angle did you come up with when installing the 4L80E? Just curious as I am trying to get mine dialed in because I am tired of listening to the rear end whine/howl!

Looks like fun, I am entertaining switching over to a turbo set up.

You said you were having a 6 liter built, is it a 6.0 with LS3 heads or are they cathedral port 6.0 heads? If they are LS3 heads meaning it's an L76 or LY6 motor with 5364 0r 823 casting then an LS3 cam is fine. If it's a 6.0 with cathedral port heads you will want to stay away from an LS3 type cam as they are spec'd completely different from a cam built for a cathedral port head. Cams for cathedral port heads will have a tighter duration say 232/236 duration, a LS# cam would be more like 232/241 due to the poor exhaust flow and exceptional intake flow.

Congrats on the new best, pretty impressive doing it in a 40 yr old car!!

I am running an R200 LSD out of an 1989 300ZXT with added clutches. My 1970 240Z has had between 550 rwhp and 700 rwhp for yrs and runs mid 9 1/4 mile passes and has never broken, cv axles have but not rear diffs. I had a r180 in mine yrs ago and it went boom the first time I hit it with 300 rwhp.

I run Castrol 80/90W LSD gear oil and add the LSD additive as well.

Great build and even more cool is the time and travels with your father...very nice!

With the engine and transmission sitting so low and the rear differential sitting so much higher have you looked at your drive shaft angle/degree? Just wondering as my John's kit (sits higher) with 4L80E was a bitch with the angle/degree being 6.3 degree's...way to much driveshaft angle.

Thanks John, I sent you a message! Thanks, Mike