455 overkill for daily driver?
- Thread starter pimplogic
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If frequent trips to the gas pump aren't a problem for ya? I only drive mine on weekends for now.
pimplogic said:
Yeah, I gotta Buick 455. I don't drive mine everyday so I can't give a MPG estimate, but I've burnt through half a tank of gas in 2 days. I still gotta fine tune my new carb and adjust my fuel pressure regulator though, my pressure's too high.
pimplogic said:
Absolutely not. Just wondering why you ask (in terms of power? weight? mileage?). I had a stock 454 with (oval port heads) in my 81 GP and it had monstrous tire-shredding torque. The mileage was better than expected too -- I had a new Holly 750 vac. sec. carb on it, and it burned less fuel than the mild 350 it replaced (no joke)! I did notice the added weight in the front of the car, but with all the extra power it was nothing to be concerned about.
I assume a stock used 455 will be similar -- you will be very happy with it (provided it fits your transmission).
By the way, my current street daily driver had a 555 crate motor. Even with high flow cats, it's ghastly loud. If I start the car and you're standing in the garage, it will scare the living sh*t out of you, to the point your hair will stand on edge and you will slowly make your way outside, where it's "safer" lol.
ok thanks i am definetly gonna go for the 455 at the end of summer, so what gears should i run in the rear to give me some decent highway driving as well, also ints gonna be coupled to the th350 would that need replacing as well? im not really worried about front springs or shocks im gonna get some heavy duty shocks when i do my brakes as well as cross drilled rotors for the front.
What year is the 455 Olds? What heads are on it? If its a 'J' headed 455, they're probably at the bottom of the list performance wise but will still get a G-body into the 13's with a very mild build.
I swapped the 455 into my '87 back in college and it was a daily driver. Never had any problems. With the TH-2004R and 3.73 gears it managed mid-13's in the 1/4 and 12-14mpg or so.
For rear gears with the TH-350 I'd stick with 3.08's or 3.23's. With the massive amount of torque these engines make, you don't need a lot of gear.
I swapped the 455 into my '87 back in college and it was a daily driver. Never had any problems. With the TH-2004R and 3.73 gears it managed mid-13's in the 1/4 and 12-14mpg or so.
For rear gears with the TH-350 I'd stick with 3.08's or 3.23's. With the massive amount of torque these engines make, you don't need a lot of gear.
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