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My Slant 6 was a Doug Dutra built Super Six with an automatic. It liked 22 initial and 32 total. I also ran the vacuum advance on manifold vacuum, so that added to the dynamic timing at idle.

Which jets came in the carbs? It should start and run with those in it. Do you have the synchronizing tool? Are you using a Remflex gasket and all the correct manifold attaching hardware? Check the float levels and flush your fuel lines well. If you don't already have a wideband installed...

Dutra is a legend in the Slant 6 community and deservedly so. His Comp Cam profiles spec's, Dutra Duals and love and contributions to the Slant 6 community are are well documented on Slant 6.org, as is his willingness to help fellow Slant 6 owners. Not sure if you are insinuating he ripped me...

I have re-used my collector gaskets multiple times. Sometimes half the gasket comes apart on one side of the collector, but I just reinstall it in the same position that it came apart from and no leaks. I wouldn't do it on the header flange though.

45 DCOE's are way to big for most Slant 6's. Bolting them onto a stock or mildly modified Slanty will result in lazy responsiveness. Heck, I tried a 500cfm Holey 2300 on my Doug Dutra modified Slant 6 with a Super 6 intake and it bogged at anything but high rpm. Ended up with a 350 cfm Holley...

Both my cars crank out 200psi when warm with no detonation, but both have aluminum heads. A buddy had a pinhole leak in his timing cover one time. It was leaking coolant into the motor. It took a while to find that. There's alway Barr's Leak Stop or black pepper as a bandaid.

I sourced an inexpensive 2bbl plate adapter to transition from a Super Six 2bbl intake to a 350 cfm Holley 2bbl. I did have to use a burr bit to smooth the port transition between the parts, but it was a perfect size carb for my Slanty. I did have Dutra Duals, the smaller Dutra spec'd cam and...

I have these on my computer. If you need more angles, let me know and I'll grab some today. The last picture was taken with the Slant 6 exhaust still in it.

The gear ratio was a somewhat rare ratio just under 3 to 1. I can't remember now.Doug Dutra recommended it, so I ran it. They were nearly perfect for the torque curve of the motor he build for me, but not ideal for quarter mile racing. They were sure nice on the freeway, but I never got better...

No, the 275/60-15 Nitto Drag Radials bolted on with no cutting. They are great street tires if you don't live where it freezes hard.

I played the Slant 6 game for 10 years. I even had Doug Dutra build my motor with most of his speed secrets for them. It was a great running Slant 6, but it was still a 18+ second quarter mile car. Save your money, tune your stock motor well and consider the following. In the end, I pulled it...

Do a clean job of cutting and grinding that area away. No one will ever know that you modified it if you have to return it.

I ran a 350cfm Holley 2300 using an adapter plate that I hand blended to the Super six intake. The kick down linkage even worked on the transmission. The motor had larger valves in the head with some hand porting, and the head had been cut to increase the compression. I also ran a Dutra Dual...

Doug Dutra is great to deal with. He lives in Sunnyvale California. I used his front cast iron manifold and his modified 1/2 stock manifold, which retains the heat riser. The system never leaked, performed very well and looked cool. I did use the Remflex gasket on both the heat riser, which I...

My Super Six loved a lot of initial(18 to 20*), but I did weld the plate to limit the total to 28 or 30*. I also used tuned the vacuum advance to use manifold vacuum, which advanced it even more at idle and part throttle. It drops to no vacuum advance on heavy throttle to keep it from pinging...

Very seriously. He's earned it.

Crawl back in your hole. Now, that would be an appropriate fix!

My Slanty did this even after the motor was rebuilt/mildly-modified by Doug Dutra. I ended up using a small socket stuffed in the hose after the PCV valve to restrict the air flow. It worked like a charm.

I had a Doug Dutra built Super Slant 6 and drove it for many years. I woke up one day and decided to pull it out and sell it. I felt bad for about 6 seconds. My 408 gets slightly better mileage now and puts out about 510 hp. That makes me feel better every time I drive it.

You may want to replace the oil pump with a new unit. I have great success with that Purple cleaner from Casto. The same guys that make the oil products. It's biodegradable, effective and rinses with water. If you live in a cold climate, warm the parts and solvent up. It works better when warm...

I had Doug Dutra build a Super 6 Slant for me with his smaller cam. The motor ran very well. It wasn't until I gave the motor significantly more initial advance and reduced the total advance to keep it at 32 total, that the motor cam to life. It loved the timing set at 22 initial and 32 total...

I ran a Remflex on my Slanty. They are the only exhaust gaskets I use anymore. Have you tried starting the nuts without the conical washers to beging the crushing of the gasket to allow room for the rest of the hardware to be installed? Once you install the proper hardware, be careful to not...

My Slant 6 with a 904 and 2.96 something rear end gears was never in the upper teens early 20's around town either. I averaged 13-14 mpg around town, and got a solid 17 to 18 on the highway at 65-70 mph. It only dropped a half a mile a gallon or so once I had the motor rebuilt and Super Sixed by...

I have seen a clean turbo /6 Duster at the Mats in Vegas, but yours is sweet looking too. Did it make those 10 second passes on pump gas or do you have to run race gas to get the boost dialed up to that point? 500 hp out of a Slant sounds expensive and high strung. I think my convertible was...

Just my experience, but I had a Doug Dutra built Slanty with big valve heads etc. Ran it for years. It was impressive for a slant. One day I was just tired of it, sold the motor and trans and swapped in a tired junkyard 5.9 Magnum with EFI and a 727. I drove that for a year or so, then built a...

I did run it a few times at Willow Springs, and it even made quick work of that souped up 24 hours of Lemons stripped down early A-Body, slant powered fastback that was out there that day too. The car was so light though that its would 4 wheel drift outward at 95 mph on turn 11. It was a great...

My slant was beefed up by Doug Dutra. We used his smaller spec'd cam and a 350cfm Holley. It wasn't until I dialed in the distributor with significantly more initial timing ( like 22*), but with only 32* total that it really came to life. It would burn the tires with 2.97 gears and a 904. The...

I had a /6 in my '68 for a decade. It was a smooth running motor stock, but I had Doug Dutra rebuild it using the smaller of his two spec'd cams, his Dutra Duals bigger valves, ported and significantly decked head. This deepened and broadened the midrange power significantly with only a mpg or 2...

The biggest performance, drivability and mileage increase I ever got with my Slant 6 was from increasing the initial timing and welding up the slots a bit in the mechanical advance mechanism in the distributor to reduce the total amount of advance. I had Doug Dutra build the motor using the...

The slant 6 tuning guru of the world lives right here in Sunnyvale. He rebuilt my slanty and it was amazing. Reasonable prices too. His name is Doug Dutra. Google him. You can contact him through Slant 6.org too. He is a very good man and does great work.