1964 Pontiac GTO 389 Tripower

Рет қаралды 16,082

5 жыл бұрын

1964 Pontiac 389 tripower 348 HP from the factory with 10.75 - 1 compression. Now will run on 91 octane pump gas. The engine now has a dished piston to bring compression down to 9.5 - 1. To get the HP back up we ported the heads and done a competition valve job improving the flow 30+ cfm over stock. We also installed a roller cam and lifters with full roller rockers to compliment the cylinder head work. She is making 400 + HP now and can be driven anywhere across the country on premium pump fuel found at any station.

Пікірлер: 34

@gtoboss8152 Жыл бұрын

Me and my grandpa are putting together this exact engine even with the tri power on it but, the engine came from a 64 Bonneville that played in Savannah smiles

@DonJohnstonDCIMotorsports Жыл бұрын

Cool, this is a sweet combo that runs well.

@unclerobby 2 жыл бұрын

I love my 389.

@barcrrt850 5 жыл бұрын

What a magnificent piece of American muscle history! DCI doing what it does best!

@EfurdGarage 5 жыл бұрын

sounds great, and honestly you cant beat the look of 3 carbs

@sidgysoho1960 3 жыл бұрын

So glad that you preserved such a sweet running mill and allowed it to live on so that others can see what Detroit Iron was all about. But the hyd. cam with the solid lifters stumps me. But you obviously got it to work. Helped an old friend out with his 65 Goat who pooched a 10 bolt rear end with a 400 RAM air IV. sold him a 12 bolt out of a 68 Vista Cruiser. Problem solved. Love the detail and the exh. note.

@DonJohnstonDCIMotorsports 3 жыл бұрын

Thank you sir for the Kudos :) We have been using solid lifters on Hydraulic rollers for awhile now. The reason we do this is because the aftermarket hydraulic lifters are hit or miss when it comes to noise and bleed off. We use solids and run the lash tight .004 to .006" and they run quieter and don't bleed off, it just works better for us.

@dwb131313 4 жыл бұрын

Awesome. Just goddamn awesome!!! Seriously beautiful.

@firebird70 4 жыл бұрын

Beautiful build Don

@albertmarquez2443 5 жыл бұрын

DCI MOTORSPORTS#1

@Richard.Hybels 3 жыл бұрын

I just bought a stock 62, stock Grand Prix. It’s the small 4 barrel motor but i5 only ha# about 15 pounds of oil pressure at idle. Judging b6 your motor I’m guessing that’s too low if gauge is correct?

@DonJohnstonDCIMotorsports 3 жыл бұрын

Hi Richard, your oil pressure is fine. Pontiac's usually idle after hot around 7 to 15 pounds depending on weight of oil. Our engines idle a little higher because we blueprint all of our oil pumps and tighten up the clearances.

@Richard.Hybels 3 жыл бұрын

@@DonJohnstonDCIMotorsports Yea! Thanks so much for letting me know. Nothing like blowing a tidy sum and then noticing something you did not catch prior to writing the check. So far so good. I had to sell my first 62 GP the day before I got drafted into the Army 1965 and always wanted another.

@yep2636 2 жыл бұрын

One little burp. Get on it.

@Fast69GP 3 жыл бұрын

What Comp XR grind is it? Sounds good!

@DonJohnstonDCIMotorsports 3 жыл бұрын

We have our cams custom ground to our spec's. We do however use the XR lobes.

@brandonweatherholtz7156 3 жыл бұрын

Oh okay. I was inquiring because I just order a custom comp HR with 3316 and 3317 lobes on a 112 LSA for my 455 and was curious about idle character compared to this engine

@Richard.Hybels 10 ай бұрын

Not all 389 inch motors with 3 carbs were 348 HP. There was a 318 HP Version also.

@dcimotorsports1111 10 ай бұрын

There was , but it was used in the big cars not the GTO.

@1beatles Ай бұрын

Anyone know what type of oil to use for a 1965 GTO straight 6? I can't find my manuel.. thanx in Advance ❤😊

@dcimotorsports1111 Ай бұрын

Our oil has changed so much since that engine was built and actually for the better. I would recommend you use Lucas Hot Rod 10 W 40 with high zinc.

@1beatles Ай бұрын

Thank you

@user-gw8xl2qh9g 5 ай бұрын

What Brand and P/N engine paint ?

@dcimotorsports1111 5 ай бұрын

Duplicolor DE1610

@patrickshaw8595 2 жыл бұрын

They all respond like that with only a three-pound flexplate on the back . . .

@dcimotorsports1111 2 жыл бұрын

Not all engines. We have had some real turds from other builders that dont :(

@patrickshaw8595 2 жыл бұрын

@@dcimotorsports1111 You're right. Shoulda' said "Anything halfway healthy etc etc", lol.

@dcimotorsports1111 2 жыл бұрын

@@patrickshaw8595 :)

@DavidGandolph 2 ай бұрын

Is this engine for sale ????? 3:53

@dcimotorsports1111 2 ай бұрын

No this is an engine we built for a customer. If you would like we can build you one like it. My email is dcimotorsports@sbcglobal.net if you would like to get a quote.

@jimhamilton3544 4 жыл бұрын

Put it on a Dino and show the results

@DonJohnstonDCIMotorsports 4 жыл бұрын

There is no need to dyno every engine we build. I have been building engines for 39 years and have dynoed my fair share, but just to get a dyno sheet for a daily driver or show car build is not needed. My clients do not all come to see how much HP they can get. Their biggest concern is having it built right for dependability. :)

@Scott_Buchanan Ай бұрын

@@DonJohnstonDCIMotorsports are the factory hp numbers about right?

@TheRoguelement 2 жыл бұрын

Hey genius are you telling us you can't run a 10 :0 motor on pump gas ?? Well if it was you who talked him out of that compression ratio you threw away HP for no reason..