Table of Contents
How much can you bore a 289 engine?
Simply stated, all small-blocks can be safely bored . 030, while some can tolerate up to . 060. To determine a cylinder wall’s thickness, the engine builder or machine shop can perform a sonic test.
What size is a 289 bored 30 over?
Registered. Yep, its a 293 now. The 289 had a 2.87″ stroke compared to the 302’s 3.002″ stroke.
What displacement is a 289 bored 30 over?
Bore X Stroke X 3.14 X Number of cylinders. In the case of a 289 punched . 030″ over, that’s: 4.030 X 2.87 X 3.14 X 8, which gives you 290.5 cubic inches.
What cubic inch is a 400 bored 40 over?
The Big Al A SBC 400 block going . 040 over, 4.165 bore.
How can I get more horsepower out of my 289?
You can change the intake to a quality dual plane manifold, add headers, increase you cam’s lift and duration, add quality aluminum cylinder heads, increase your compression (beef up the bottom end). You most cost effective way to build a 289 is to not.
What is a 306 stroker?
a 306 is just a stock stroke (3.000″) that has a common overbore rebuild size of 4.030″ piston.
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 |
Is 289 or 302 engine better?
The 302 differed little from the 289, with the exception of the stroke, which measured 3.0 inches. Aside from the stroke measurements, the 302 also differed from the 289 with a higher nickel content in the engine block to create a stronger engine. The two-barrel version debuting in 1968 generated 210 horsepower.
How much horsepower can you get out of a 306 engine?
Simple math tells us that the 306 produced a specific output of 1.346 hp per cubic inch. By contrast, the 347 checked in at a slightly lower 1.314 hp per cubic inch.
What bore is a 306 SBF?
Stock bore is 4.00″ diameter.