Is the Pontiac 400 a good engine?
The Pontiac 400 engine was used as a high performance engine in sports cars, and it was used in large cars as a workhorse type engine, strong on power, though not as speedy as the higher performance engines. This was accomplished to a large extent by the use of carburetors.
How much horsepower does a 400 Pontiac engine have?
360 horsepower
They found that the engine provided massive amounts of low-end torque and rock steady high RPM power output. The 389 posted numbers in the 330 horsepower range with a single spread-bore, four-barrel carburetor. The 400 pushed this number up to 360 horsepower, with the same Quadrajet single four-barrel.
How much horsepower can you get out of a Pontiac 400?
In the end, No. 97 jets square, 0.030/0.020 valve lash, and 31.5 degrees timing produced 650.4 hp at 6,300 and 596 lb-ft of torque at 4,900 rpm….
| Engine Buildup Worksheet | |
|---|---|
| Engine Displacement | 463 |
| Torque | 596 lb-ft |
| Bore/Stroke | 4.185/4.21-in |
| Block/Crank Combo | 400 block, bored 0.035-in/stock 4.210, |
Is a 400 Pontiac motor a big block?
It wasn’t until 1967 when Pontiac decided to add a bit to its bore to make the 400 by adapting the original recipe for 389. With a 4. A 12-inch bore and a 3-inch drive. Despite the fact Chevy’s big block 396 displaced cubic inches, neither the 400 nor the 396 were the big block.
Is Pontiac 455 and 400 the same block?
We took the question to David Butler of Butler Performance in Lawrenceburg, Tennessee, for his professional opinion. He advises, “With the exception of the mid- to late-1970s PN 500557 casting, we consider all Pontiac 400 blocks functionally identical. The 455 blocks from 1970 to 1976 are also functionally identical.
Did Pontiac make a 400 small block?
In 1967, Pontiac took the basic recipe of the 389 and added a bit to its bore, creating the 400. With a 4.12-inch bore and a 3.75-inch stroke, Pontiac’s 400 had similar bore and stroke to Chevy’s big-block 396 (even when the Chevy actually displaced 402 cubic inches).
How do you get 400 horsepower out of a Pontiac 400?
Mailbag: How to Get 400+HP from a Pontiac 400 Engine
- Edelbrock Performer intake manifold.
- Edelbrock Performer cam and lifter set.
- Edelbrock Performer aluminum cylinder heads.
- Edelbrock Performer head bolt kit.
- Edelbrock Performer 750 cfm carburetor.
Who made a 400 motor?
General Motors The 400 What is the largest version of the generation one small block measuring in at 6.6 L it made it Steve you in 1970 and was produced for a decade.
What is the difference between a Pontiac 350 and 400?
Only difference between a 350 and a 400 is the bore size. ’72 Formula 400 Lucerne Blue, Blue Deluxe interior – My first car!
What is Pontiac’s biggest motor?
The 455-cu.in. V-8 debuted in 1970 and was the largest displacement Pontiac engine ever built for the street.
What is the difference between a Pontiac 400 and 455?
In fact, the 400 actually has a slight advantage over the 455 for maximum performance applications because its smaller-diameter bearings offer less friction and its smaller main journal bore leaves more material in the bulkhead.
What liter is a 400 Pontiac motor?
The Pontiac 400 6.6 Liter engine was first introduced in 1967. This version of the Pontiac V8 engine was used in the GTO, Firebird, and the Trans-Am Firebird. The 400 was inspired by the Pontiac 389 V8 and proved to be the last Pontiac engine with closed chambered heads.