Poncho Revival -- Building a Stroker Pontiac (Secret EFI!)

Keith Dorton of Automotive Specialists takes a junkyard 389 block (with missing main caps) and turns it into a 416 cubic inch Pontiac V8 with the classic triple-deuces look except with trick modern fuel injection. Please note: In the video I call the block an original 389. I think this is actually a more modern 400 block. Sorry for any confusion.

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[TheMrmmkkpro]

Very nice, I have drag raced Pontiacs since the late 70s. I currently am running a 1972 455H.O, bored 60 over trw L2394 pistons and with the 7f6 heads. A nice healthy comp cam, torker 1 and a 850 hp series carb and a msd ignition. This engine runs great makes a lot of torque.
Thanks for posting this, keeping the poncho alive. 👍👍🏁

[IronChief]

389 and 400 have the same main journal size. 421, 428, 455 have the larger 3.25 size.

[icemanification]

In an age where all you see is LS1's, it's great to see an old school engine. Always loved Pontiac V8's. That Tri-Power fuel injection setup is pretty sweet, although the power did get sacrificed a bit. An 8-stack Kinsler fuel injection would've been cool too. Great video sir!! 😃👌

[phillipthethird]

I'm a pontiac guy and it's always nice to see what guys are doing with them. It helps me to keep on top of the latest stuff. Thanks

[adampatterson]

I had a 64 Catalina with the 2bbl 389 with a 3 on the tree. It was a early 64. It had right and left cylinder heads. The heads were oiled from passages that came from the thrust bearing. It was a great car, I still kick myself for letting that car go. Keep up the good work. Thanks.

[lars]

When I see this man at work, it is a marvel to watch his experience expertise.

[tedsmith]

Been working on these old cars when they were considered almost new. I absolutely LOVE these builds. They are historical reference material. Listen carefully...learn a lot. Keep making these videos. Please?

[philipmazzuca]

Intake/carb/TB is killing that engine power Dortons are fantastic build.

[Brock_Landers]

Wow, this is a beautiful build. I have always wanted an early GTO with a fully built 389 or 400 with a high compression, snappy response, lopey cam engine. This tri-power build will serve that wagon well.

[glennwallace]

I remember seeing this six pack on a 64 GTO. I was in love with it. I did get my six pack but on a 68 Roadrunner. Would pass anything but a gas station.

[genelong]

I bought a 1966 Pontiac Catalina from my Grandfather. 389 tri- power. Central Texas was glad I stopped street racing. Best all the cars in the 70's and 80's

[jw]

Marvelous oldie! Built for fun and show, so it doesn't need to be maxxed out.

[rafaeltorres]

Wow sitting back and watching this build come together is ❤
The only thing to make it a bit sweeter would be a quarter mile run at the end, with a time slip.

[davidtucker]

love that retro intake setup with the EFI I can never afford. Sweet. Go Pontiac power!!!

[vortexgen]

The original Poncho Rochester 2GC big base Tri-power carbs flowed 325 cfm. Those T/Bs being bolted on are for the Chevy Tri-power being retrofitted to the Poncho, because the offset T/B hold down bolts. Just like you said, those Rochester 2G small base carbs flowed 285 cfm for the Chevy stuff. A single plane intake works great for WOT, but is less effective for driving on the street. With this street friendly setup, the owner will be much happier driving around town.

[gregepperson]

That’s totally badass! A four bolt main 389!

[Draxindustries]

Quality engine build and love the pontiac estate car..

[tonyschiffiler]

Would like to see more about oil clearances . small rod specs. and piston to head clearances, beautiful build by a pro thank you .

[prtyof]

Love the unique builds featured, keep it up!

[manitoublack]

Would love to see quad webers on one of these🙄.

Oh yeah. And this is totally awesome as is😁👍