early '90s 454 and turbo 400 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

grady5 · 11-20-2007, 07:32 PM

i posted this in the engine forum but didnt get much help so ill try here. i found a 454 and turbo 400 in a early '90s dually. i can get the motor,trans, radiator'and all the accesories for $800. it runs good and no smoke. my question is what kind of power will this give me? i know it wont have the power of the older 454's but will it be a fun to drive motor in a weekend street truck? i would probably put a small cam in it just for sound other than that i dont want to spend a lot of money on it. thanks for any help.

**1970cstblazer** · 11-20-2007, 07:43 PM

The factory rated the 454 in the early 90's with 230hp and 385 ft/lbs of torque. The CR, cam and heads are limiting the HP on those engines.

grady5 · 11-20-2007, 08:08 PM

would this be a good motor to start with? torque is what really matters right? thats not a bad torque number for that low horsepower.

**WorkinLonghorn** · 11-20-2007, 09:19 PM

That's down low torque. I remember the early 90's and people were quite pleased with the 454 fi power.

grady5 · 11-20-2007, 09:27 PM

the fi has been replaced with an edlebrock alum. intake and a duel line holley.

**clay68c10** · 11-20-2007, 10:09 PM

I'd guess that 454 would have the peanut port heads. Not great for rpm, but low end torque is ok. You could always change heads later if you want.
For $800 with trans & extras, I'd get it.

11-20-2007, 07:32 PM	#1
grady5 Registered User Join Date: May 2007 Location: north carolina Posts: 80	early '90s 454 and turbo 400 i posted this in the engine forum but didnt get much help so ill try here. i found a 454 and turbo 400 in a early '90s dually. i can get the motor,trans, radiator'and all the accesories for $800. it runs good and no smoke. my question is what kind of power will this give me? i know it wont have the power of the older 454's but will it be a fun to drive motor in a weekend street truck? i would probably put a small cam in it just for sound other than that i dont want to spend a lot of money on it. thanks for any help.

11-20-2007, 07:43 PM	#2
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,439	Re: early '90s 454 and turbo 400 The factory rated the 454 in the early 90's with 230hp and 385 ft/lbs of torque. The CR, cam and heads are limiting the HP on those engines. __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

11-20-2007, 08:08 PM	#3
grady5 Registered User Join Date: May 2007 Location: north carolina Posts: 80	Re: early '90s 454 and turbo 400 would this be a good motor to start with? torque is what really matters right? thats not a bad torque number for that low horsepower.

11-20-2007, 09:19 PM	#4
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,861	Re: early '90s 454 and turbo 400 That's down low torque. I remember the early 90's and people were quite pleased with the 454 fi power. __________________ '69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, 2nd owner, Work-Truck supreme. Best $300 I ever spent.

11-20-2007, 09:27 PM	#5
grady5 Registered User Join Date: May 2007 Location: north carolina Posts: 80	Re: early '90s 454 and turbo 400 the fi has been replaced with an edlebrock alum. intake and a duel line holley.

11-20-2007, 10:09 PM	#6
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,935	Re: early '90s 454 and turbo 400 I'd guess that 454 would have the peanut port heads. Not great for rpm, but low end torque is ok. You could always change heads later if you want. For $800 with trans & extras, I'd get it. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ



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