455 Buick question

1dollardog

Are we there yet?
Joined
Jan 5, 2007
How sturdy is the 455? Can they be made to put out alot of power and still hold up? What kind of power and torque did they have in stock form? HAS ANYONE EVER TURBO'D ONE?:biggrin:
 
The Buick 455 is simply the meanest V8 ever made in my opinion. Waaaaaaay under rated. Chevy plugged their Chevelle LS6 as the undisputed musclecar champion. The GS,GSX was an equal car and in most cases (stage II) much, much better.

As far as reliability goes, they are still tooling around today. A turbo....none needed. That mill puts out some serious torque. If you were to turbo one and build it right, it would probably reverse the rotation of Earth upon launch.
 
Oh yeah they can make power with $$$ just like the 3.8. A stock 1970 455 SP block was rated at 390 hp with 510 ft/lbs of torque. I have a mild 71 Buick 455 motor in an 86 Regal w/ a 12.90 quarter mile ET. They will definitely fit into a G-body. As far as turbo........procharging is what I've seen guys do. There was one procharger 455 at BPG Nats in Columbus this year. I was thinking he ran a high 11 or low 12.
 
Oh yeah they can make power with $$$ just like the 3.8. A stock 1970 455 SP block was rated at 390 hp with 510 ft/lbs of torque. I have a mild 71 Buick 455 motor in an 86 Regal w/ a 12.90 quarter mile ET. They will definitely fit into a G-body. As far as turbo........procharging is what I've seen guys do. There was one procharger 455 at BPG Nats in Columbus this year. I was thinking he ran a high 11 or low 12.

The actual rating was 360hp.... but in reality - it was closer to 400. They underrated everything those years because the insurance was skyrocketing. Of course - the insurance back then was probably 1/2 of the insurance on a Hyundai today... :D
 
Oh yeah they can make power with $$$ just like the 3.8. A stock 1970 455 SP block was rated at 390 hp with 510 ft/lbs of torque. I have a mild 71 Buick 455 motor in an 86 Regal w/ a 12.90 quarter mile ET. They will definitely fit into a G-body. As far as turbo........procharging is what I've seen guys do. There was one procharger 455 at BPG Nats in Columbus this year. I was thinking he ran a high 11 or low 12.

Just saw a 86 regal on ebay with a 455. Similar to the one in your sig. with a Th400. Is that a good combo. Is the trans ok for a daily driver? What kind of milage do you get with it?
 
Just saw a 86 regal on ebay with a 455. Similar to the one in your sig. with a Th400. Is that a good combo. Is the trans ok for a daily driver? What kind of milage do you get with it?

I currently have a 750 cfm carb with a 3.50 gear. I get about 13-14 miles/gallon. I've had this car together for a little over a year. I took out the AC/heat box. I drive it occasionally more or less to screw around the neighborhood or go to the track. I plan on doing some changes to the car. I'm going to put a nonAC box and change springs so I can drive the car more frequently. I'm also going to change the HEI (going to go MSD with a 6AL spark box), change up the carb (probably going to Holley 950), and the gear ratio to a 3.73.

If you are looking for gas mileage, I would not suggest the TH400. I would use the 200R4 that we have in our turbo cars. Overdrive makes a big difference in the gas mileage department.

I should warn you. Big Block Regals do not carry the same value as a Skylark, GS, or Wildcat with a 455. If you want a big block car that will go up in value dramatically as you own it. Get an early 70's GS. If you want a car to screw around with that you can easily swap body parts and suspension parts with your TR. Go the Regal route.
 
The ebay car I saw is a sweet ride. Was originaly a 5.0 car but now has a 73 model 455 punched out .030 over with a Holly 850 on it. It has a gn 3.42posi. He said it ran a 12.00 in the 1/4 on slicks. Looks like a nice street machine.
 
The 455 Buick is definitely not a gas miser even in stock form with the TH400 trans. (see signature). I get about 10-13 MPG on highway but that might be attributed to a reworked stock John Osborne prepped Q-Jet?
 
My Chicago Friends

Stock block cars! They love the 455s. I say they're too loud!:) He is a good guy to contact.
 

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I had my 455 stage 1 clone for about 15 years. I got a steady diet of 10 mpg.
 

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