305 and 350 are same block... as with all the sbc afaik so any will fit... a FAST 305 would be cool, but the same amount of money in a 350 would be much quicker... my 91 rs LO3 supposedly had 170hp/255tq from factory... but to the tires it was probably more like 150hp/250tq... good ole TBI powered! had the 2.73's but it was still quick (for what we had in high school) and could do decent burnouts... they were not really built for performance... nice cruising car though cant wait to put my 700r4 back in it w/ a good cam... somehow find some good heads for cheap...

 

Here's a link for how to make 325 HP on a 305. My recommendation for getting a fast 305 is the following.

-Get a nice cam, like maybe .460 lift or bigger and 218/224 or better duration
-Get a nice exhaust system, long tube headers, dual exhaust
-Nice ring and pinion gears, 4.10's are nice, 3.73's will work nicely too, fast acceleration
-Better heads, LU5 heads that came on the Cross-Fire camaro's are nice flowing, but LE1/LE2 heads are nice too.
-Bigger throttle body, if TPI, like 52mm or 58mm, depends
-A very nice tune
-A nice big intake manifold
-And just for safety, get a roll cage to support your frame so it doesn't twist. Along with a strut tower brace for the engine bay

I don't know, i just came up with a lot of that on the fly, so if any of that doesn't sound right, let me know.

ShibbyZ

 

If you got the money a big block is the best choice and its not put one in a 3rd Gen car. Its bolts in. And a big carb on it and that car would pull the tires off the ground, with a good big block and carb

 

94 red dragon u saying that a big block is a bolt in for a third gen camaro?

 

Sorry man, the external dimension of the blocks are the same, as with all of the other gen 1 sbc's, but they are not the same block.

- Justin

 

#54 on the craziest things I've heard about thirdgens list.

 

hey insane how is that #54 on ur crazy list?

 

Dude, going fast is going to cost you money any way you look at it. Depending on what your starting with will determine how much you need to spend.

But honestly, if you want build a 305 then do it but be prepared to spend some coin.

If money is going to be an issue, then look for another option (350 with HSR, LT1 or LS1 swap).

 

54 was just a random number I picked out. I just meant that someone saying a BBC will "drop right in" to a thirdgen is just funny.

 

well ive been doin alot of reading on here and i think after i get a paint job im gonna try to start building my own 383 stroker, just slowly but surely build up the ultimate engine with the highest quality fastest parts i can get !

thkzz for all the info

 

It can be depending on how much$$$$ you are willing to spend.I used to have a 1988 irocz with a 305 tpi. Well I put a 335 stroker kit in it. Had a shift kit installed and some 3.73's and ran dead even with a stock 96 z28.I didn't even touch the upper part of the motor.Could've went faster with more money.But There is no substitute for cubes . Builld the 305 if you want. You'll have fun with it.But you can do alot more with a 350 or a 400. I mean what ever you will do to the 305 you will get better results from a 350.more cubes

 

I have rebuilt a lot of 305s for my camaros and firebirds. Most of the time it was because of the budget I was dealing with. When you start increasing the cubic inches other things come into play. Such as, carb sizes/computer programming, parts fitting, fuel injectors, accessory drives, etc, etc, etc. You have different issues with whatever decision you make.

But, here is the fun part. It doesn't take much to wake up a 305. The stock motor is very restrcted and a lot can be done with very little money. I have built 305s knowing this and have had a lot of success. Most people wouldn't believe me when I told them it was a 305 and that made me feel good. I had built something that a lot of people said couldn't be done.

I would like to get more in depth, but I don't feel like typing a 4 page reply. All I am saying, is what ever decision you make, choose it well. If you want to stay with the 305, which is what your original posting said, then there are a lot of things you can do to help that are cheap. Some other the changes will make a noticeable improvement and others not so much. But, I gaurantee you will have lot more fun with your car.

 

Ding Ding Ding.. he's right. From the factory 305's are HORRIBLY restricted. Like dahaus said, it does NOT take much to really wake them up.

 

Thank you 85 305. There a lot of misconceptions about the 305 and all the smaller sbc poweplants. "There is no substitution for cubic inch", but I don't think we are trying to build a pro-street camaro. We are trying to build a fun daily driver with a budget in mind.

 

I almost forgot. I also built a stroker 305 as bluebyeyouirocz28 did. I had great success. I was fortunate enough to dyno the motor (329bhp and 380 ft-lbs). One caution though. I wouldn't recommend using the 400 rod combination with regular 305 pistons. Although the compression was raised, the power band seemed to be a bit short. I suggest putting the extra $$$$ into the silvolite pistons that can utilize the 5.7 inch rod.