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Chevy 305

This category covers questions about the Chevrolet small-block engine variant 305. The 305 had a displacement of 305 cubic inches, with a 3.7350-inch bore, and 3.4803-inch stroke.

1,733 Questions

What is the difference between a 305 and a 305 HO in the 1984 z28?

The HO engine had higher compression, bigger intake valves, and a different cam. Also, it was painted black.

How do you get past the emissions swapping a 305 to a 350?

A lot depends on what year you're working with. Perhaps you could restate the question to better explain what exactly you want to do.

Can a use 1979 Chevy 305 cylinder head with 1991 305engine?

NO. They are different. What you need is called a high rail cylinder head. It must be newer then a 1987.

Can you use a jeep t5 transmission on a Chevy 305?

The trans will work, but you'll need to obtain the correct bell housing.

How much hp will your 305 small block have if you had a holley throttle body and edelbrock intake and extreme volocity air intake system and 327 heads and hooker headers?

you could put a blower on a 305 and a 350 with 10 to 1 compression w 2.02 valves and a stock quadrajet carb willhumiliate it sorry i went through 6000. wasted on my 1977 camaro lt w/ 305. the motor is nothing but a boat anchor. if you want to have real power order a crate 350 with a stroker kit the 305 just wont cut it i had heads cam pistons steel crank headers and a holley blower with nitrous if i got over 340 hp it was sad with all the goodies, and my friends stock 350/350 chevelle would burn me every time. so i gor so fed up i built a 427 and started running mid 10.s

To answer the question, your engine would probably not see much, if any, increase over stock hp. 305's had 58cc chamber heads with small valves. This kept the compression up, and improved the low speed air velocity for good low-end torque. The 327's had mostly 64 cc heads, which would lower your compression ratio, and bigger valves, which would improve high speed breathing at the expense of the previously mentioned low-end torque. Also, depending on the cam, you could have a problem with valve to block interference since a 305 piston is a lot smaller than a 327 piston.

305's don't respond to the same performance enhancements as a 350. You can increase the compression with better pistons, change to aftermarket heads and cam, and get the engine up over 300 hp, but the block just isn't made for any more than that.

Would a Chevy 305 bolt up to a 1940 Buick 3 speed manual transmission and bellhousing?

You'll need an adapter to put that trans on that engine. Check with these guys: http://www.advanceadapters.com/

Will Chevy 307 pistons fit on Chevy 305?

307 pistons are 3.875" diameter. 305 pistons are 3.736".

It might be possible to bore a 305 large enough to accept the 307 pistons, but the wrist pin location would be .230" off because of the different stroke.

In short, no.

Will a fuel pushrod off a 305 fit a 350?

Should- I believe they are the same length on all Chevy sb. Since they are dirt cheap you should consider a light weight pushrod, high flow mech pump and upgrading your ss lines from 5/16's to 3/8's.. It makes a diff at high rpm.

Is a 627 block a 350 or a 305?

14093627 is listed on Mortec as an 87-94 305 block.

Will a 305 350 v8 bolt in a 63 nova two easy?

The problem is that putting a v8 in a 1st gen nova requires a special oil pan and pickup.

If you can find the right parts, it's easy. If not, you need a chassis guy to change the steering and engine mounting.

What is a 267 Chevy bored 0.60 over be?

A 267 is 3.5" x 3.48". So, a .060" overbore would make it 3.56" x 3.48".

3.56/2=1.78*1.78*3.14159*3.48*8 cylinders=277 cid.

Where is the crankshaft sensor located in Chevy 305 1998?

It is bolted in the passenger side of the timing chain cover towards the bottom.

You will have to slide in under the front of the engine and look up at it to see it.

It is held in place with a 10mm bolt. Unplug the electrical connector and remove the bolt and then pull it out.

Do i need to use any lube when replacing rod bearings in 305 engine?

Yes, it's a good idea to smear a little assembly lube on the bearings when you put them in.