What would you do? Slant performance
Hey, that's a cool *** old Vali-wagon, don't see many of those porterracing!!
Hope you're enjoying your time w/it . Turbo power is an effective way to give your slant
a fat torque curve boost, but w/o an intercooler and using cast pistons 7-8 psi is about
the limit on pump fuel, dunno about E85 but your carb would need jetted up a bunch &
mileage will suffer. Timing and A/F are critical to prevent detonation from takin out your
head gasket or bottom end, definitely NOT cheap to learn the hard way,you've been
warned. :coffee2:
All good advice, I think. Jim Burch said in a previous note, " /6's are very receptive to bolt ons." I think That's basically true up tp a point, but the cylinder head is so restrictive, (and there's in a limited amount that can be done about it,) that they are ham-strung in the power they can make, naturally-aspirated, and it's far below the limit of forced induction engines. For example, there was FABO member who built a '68 Dart, with a naturally-aspirated 225 /6 that he spent a lot of time and money on, finally getting into what I would call "full-race" status with a ported head, big valves, a 4bbl carb, headers, a milled head, aftermarket ignition, and a radical cam. He had it geared for the quarter-mile and slicks on it. He was a car guy and obviously knew what he was doing.
His best e.t. was just over 14-flat.
Another poster, here on FABO, took a bone stock, 100.000-mile slant six in a '70 Dart, added a 4bbl and a Buick turbo (no other modifications) and ran 12.95-seconds at 104mph. And, yes, he was running the engine at a boost-level far above where it could live very long, but that just shows what these engines need. They can't BREATHE (naturally-aspirated,) with the only head we have to work with. Here's a video of that stock motor+ 4bbl/turbo run...
[ame="https://www.youtube.com/watch?v=pPe_vHwZsF4"]Slant Six Turbo 1970 Dodge Dart 1/4 Mile pass - YouTube[/ame]
You can add a 4bbl and headers to a stock motor and get the e.t. down into the 16s, or maybe the high 15's with a cam and a milled head, but, it will never be the torque motor that it will with a turbo.
You pays your money and you takes your choice! :cheers: