M119 5.0 intake 3D printed by Luftcraft a six speed swap.

[Schlompie]

I got this new intake from Luftcraft. It’s 3D printed, overalls I’d give it 9/10. Easy to install, def added a lot of mid range power, like break loose the rear tires from a steady roll and pulls like a wild horse! 3 point deducted bc I find it to be ugly but 2 points added back bc now the strut bar, the former step one on any service, is no longer pinning the intake in place.

Also, I went to the j yard and they actually had a crossfire with a stick. I pulled the transmission with shifter, pedals, hard lines. Plans are to get the adapter and swap it along with a 3.70 diff from a 320SL.

 

[gerryvz]

Are there any air filters on that thing ?!?

Love the Zoom Tube Helpers !!!

 

[Schlompie]

Are there any air filters on that thing ?!?

Love the Zoom Tube Helpers !!!

Yes, two huge conical ones, more surface area than the little rectangles. Full 3 inch ducts too, way more air

 

[Schlompie]

There is a 1998 SL at the j yard. Thinking about pulling the whole motor, getting a 5.6 crank and using some 1995 ported heads on top. It would be a slow build on the stand, think several years of accumulating parts. I think that would be a great set up, six speed stroker and some low gears.

 

[gsxr]

There is a 1998 SL at the j yard. Thinking about pulling the whole motor, getting a 5.6 crank and using some 1995 ported heads on top. It would be a slow build on the stand, think several years of accumulating parts. I think that would be a great set up, six speed stroker and some low gears.

As long as you don't plan to bore it to 100mm (for 6.0L) that should work fine. 1998 is an open-deck block so you can't bore it out further. You'll need custom pistons, along with some machining on the crank, rods, and block... plus rebalancing the rotating assembly. 1995 heads are a good idea since 96-up had smaller intake valves. Should make ~350hp with a healthy bump in torque, maybe 400 torques? Fun stuff if you can make it happen!

 

[Schlompie]

Yeah I didn’t plan to bore it out. These motors put wear into the rings, the walls stay put. I have another set of the 1995 heads I could port rq to top it off. Over bores marginally increase power, it’s really only ever done for out of spec cylinder walls.

Yeah pistons would only be the real costly part. The machining is pretty minimal from what I have researched.

I wish there was a company that made some headers for a decent price for these cars…

 

[gsxr]

Headers have terrible ROI on the M119. The power limit is on the intake side, not the exhaust. Don't waste money on headers. The stock manifolds may look like a brick, but they flow surprisingly well.

 

[Schlompie]

Headers have terrible ROI on the M119. The power limit is on the intake side, not the exhaust. Don't waste money on headers. The stock manifolds may look like a brick, but they flow surprisingly well.

What would you do to improve the intake, a short runner open plenum, instead of the folded long runner design?

A few years ago I saw a video on YouTube of a guy who built a carb m119 with a custom intake similar to a single plane short runner for a small block ford

 

[Schlompie]

Or how would you work the stock intake?

 

[gsxr]

It really depends what your intention is. The long runners help with low-end & midrange torque. If you want to keep it streetable-ish, you will probably want to keep the long runner design, possibly modifying the stock intake. Look at what Carobu did with the M117 (link)... there are some other articles with more details, but basically they enlarged the lower plenum (harder than it sounds).

Short runners / ITB stacks would be great for high RPM, but unless it's a track car that rarely dips below 4000rpm, that might be a letdown on the street.

So few people have done this stuff, and/or reported the results, it's hard to tell what works and what doesn't.