What is a 1968 Firebird 400 worth?
Data based on 251 auction sales. note: The images shown are representations of the 1968 Pontiac Firebird and not necessarily vehicles that have been bought or sold at auction….Pontiac Models.
| Engines | Median Sale |
|---|---|
| 400 CID | 330 HP | $23,500 |
| 428 CID | 375 HP | $30,875 |
| 350 CID | 320 HP | $18,750 |
| 400 CID | 335 HP |
How much horsepower can you get from 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 Pontiac 400 a small or big block?
A Chevrolet Camaro 396 had a big block, but a Pontiac Firebird 400 did not.
What engines were available in a 1968 Firebird?
Engines
| 1967 | Std 230 cu in (3.8 L) Pontiac SOHC I6 165 hp (123 kW) | L67 400 CID Pontiac Ram Air V8 325 hp (242 kW) |
|---|---|---|
| 1968 | Std 250 cu in (4.1 L) Pontiac SOHC I6 175 hp (130 kW) | L67 400 CID Pontiac Ram Air V8 335 hp (250 kW) |
| 1969 | L74 400 CID Pontiac “HO” Ram Air 400 V8 335 hp (250 kW) |
How much can you bore a Pontiac 400?
Most Pontiac blocks can tolerate an overbore up to 0.060 inch, and possibly more after proper thickness testing. Boring and honing should always include a honing plate.
What is the standard bore of a Pontiac 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).
What cubic inch is a Pontiac 400 bored 60 over?
Pontiac Blocks- Bore and Stroke
| PONTIAC ENGINE CHART | ||
|---|---|---|
| ENGINE | MAIN DIA. | |
| 60 over | ||
| 400 CU. IN. | Stock Bore | 3.00 |
| 30 over |