Can You Make A 2 Bolt Main Into A 4 Bolt Main?

What’s the difference between a 2 bolt main and a 4 bolt main?

Two bolt means each main cap uses two bolts to hold it down.

Four bolt means there are four, which means more clamping force, and less likelyhood that the crank is going to push itself out of the bottom of the engine at high RPM / power.

Here is the “splayed” 4-bolt mains..

Is a 400 small block better than a 350?

A small block 350 and a 400 have an identical block design. Most accessories will fit either engine. The major difference is found in the casting numbers and the way they are balanced. Most 350 cubic inch engines are internally balanced whereas the 400 engines are not.

Can a stock 350 handle a supercharger?

Installing a supercharger on a stock engine generally works well as long as the static compression ratio is 9:1 or less and engine speed is limited to 6,000 rpm.

Why is a 327 better than a 350?

A 327 with it’s shorter stroke would need shorter gears so it can GET to its revs, where a 350, with its slightly longer stroke and more torque output will pull a little taller gear than the 327 will.

How do you tell if a 454 is a 4 bolt main?

Chevynut wrote: “You can tell if it’s a 4-bolt main by looking for an oil cooler port above the oil filter boss. If it has an extra plug there, it’s probably a 4-bolt block.”

Can a stock 350 handle nitrous?

as long as you have enough fuel pressure anything up to about 175 to 200 hp. will be fine just remember to have at least 5lbs fuel pressure while you are on the nitrous not 5 lbs before you push button. Due to smog laws here in calif. I have no other way to go for more performance.

What year is the best Chevy 350 engine?

L31 (2002) From a purely technical standpoint, the most recent version of the Chevy 350 would naturally be the best of the bunch. Marketed as the “Vortec 5700” engine, but known internally by the moniker of L31, this engine was used primarily in GM vans and trucks until 2002.

How much horsepower can a 2 bolt main 454 handle?

The 2 bolt Big Block Chevy blocks are fine for anything up to 6500 RPM and 600 HP.

Is there a 327 4 bolt main?

They never made a 327 4 bolt main block. You can make one with a large journal 327 crank in a 4 bolt 350 block due to the same bore that they have.

How much boost can a 454 handle?

I’ve hurt them- twice with rod bearings, both have been with stock rod bolts, it took a lot of years and abuse before it happened. and was pushing 750 plus hp on the dyno with over 6# of boost on a 8-71. They claim the experts agreed that about 700-750 hp is all a stock bottom end 454 could safely handle.

How much HP can a 4 bolt main 350 handle?

1. 4-bolt blocks with OEM main bolts are good to 475 HP, and are good to 7200 RPM. 2.

Why is a 4 bolt main better?

Any time you increase horsepower, torque and cylinder pressure, you increase crankshaft load. It would take quite a bit more stress to rip-out 4 bolts than it would just 2, so that’s why the 4 bolt mains are stronger than the 2 bolt mains.

How much HP can a 350 make?

The Chevy 350 engine is a 350 cubic inch (5.7-liter) small block V8 with a 4.00 and 3.48 inch bore and stroke. Depending on the year, make and model of a car, horsepower ranges from approximately 145 to more than 370.

How much power can a 454 block handle?

MonzaRacer. As for big block Chevy a factory 2 bolt 454/427/402 block with out large over bores will easily and safely handle 700+hp/torque, and never discount the cast cranks As I have seen 600-700 hp on cast cranks, they just dont like shock loading quite as much as sbc will take,,tend to have reliability issues.

How much horsepower can you get out of a 454?

Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big surprise. But like any stock engine, there was tons of power left to be squeezed out.