I was wondering if I should just bore out my new 305 or build it up. I dont care about building HUGE power but I want to get into the 13's. So which way would be cheaper? Boring it out or mods to the 305?

 

You can't bore a 305 to a 350. There isn't enough metal. I'm sorry you got a new 305.

 

Thats funny I have 2 friends who have done it???

 

Just take it down to your local machine shop and tell them that you would like to bore it 250 thousands over

 

So I seriously cant bore it to a 350?????? I swear my friends must be retarded then. Well still Is it worth me boring it out to whatever the hell I can bore it to or not? I just want to get into the 13's whichever way is the cheapest.

 

Probably just a misunderstanding, you can bore pretty much any engine within limits. You just won't get a 305 to 350 by boring it.

Sell the new 305 and grab a recent 350 from the junkyard, '97 Tahoe for example. $500 for a long block with no accessories. Get a good one and use it as is, you'll be ahead of the rebuilt 305 already.

People pushing the 305 as a fast engine generally omit the price tag to squeeze power from it; eg. stroker kits and whatnot.

The 350 can be made to output more with less $$.

Now watch all the 305 apologists rush in to discredit this with second-hand stories of fast 305s...minus the price tag or timeslip of course.

 

How much do you think I could get out of this 305..........It new not rebuilt. Believe it or not. Its got the heads, piston, cam, and timing chain etc...

 

I worked over my 305, price was about $2200. Time and speed in sig (haven't perfected that scanning thing yet). I posted "Everyone knows 305's can't run" a couple of weeks ago, look that up for more details.

But, I would NOT recommend spending a dime on machine work on a 305 block.

How's that?

You may be able to get into the 13's with a 305 that hasn't been bored out. Most likely, you'll be able to get a 350-based machine into the 13's and be more streetable than you would with a 305.

Am I still doing okay, Kevin?

Your 5 speed may not be too happy with you either way. Some guys have gotten into the 13's with them, but they won't be doing it forever.

You should be able to get a couple of hundred out of the 305 to apply towards the 350.

Oh, it's true - you can't bore a 305 out to 350.

 

Sounds cool.........Im going to see what I can do with my situation now. I probably just pissed away 500$!!!!! I think Im going to go to the CASINO!!!!!!!!!!!!!!!!!!!!!

 

305 -> 350? BWAAAAHAHAHAHAHAHA!!!!!!! :sillylol: :sillylol: :sillylol:

I love when people say that. Anyway, a 13 second 305 is very possible... Once all the bugs are worked out of mine (hopefully tomorrow), Ill easily be there. Maybe high 13's, but 13's regardless... look at the list of mods I have, nothing major.

 

Yes unfortunantly for me I have TBI not TPI...........So its a little harder for me to get there....

 

I was thinking of making a 4.3L into a 350. Just got to figure out how to attach the 2 cylinders that they cut off.

 

That's not funny, I know of at least three friends who have done it

 

CHP mag took a 305 tpi and made it run low 13s...

It has torquer heads...3.73s...700r4 with shift kit...and a 150 shot of NOS...and a computer upgrade and ign. system...those are the things i can think of...also it had slicks....ill copy the article if u want...

DABE
:hail: 350s

 

My guess would be that CHP could have saved money on gears and heads, and just used the juice.

 

Yeah, I forgot about that. You might want to consider a TPI swap... It is expensive, but will benefit you in the long run.

Ill *should* have some impressive new times this or next week. By impressive, I mean for the mods that are done to my car. My car isnt by any means really "fast", but its not bad for what it is. I forgot to mention that the times in my sig were run on a shot clutch with bad slippage, bad rear suspension (wheel hop), VERY imbalanced injectors, and a good amount of ignition retard due to pinging caused by the bad injectors.

 

I hope your not making fun of me. I never claimed to be a car genius. In fact I know very little...........Thats why I depend on you guys' help. So if you arent here to help, then please go somewhere else. Im in a huge bind and dont need ****. If you werent then I apologize.

 

He was referring to me.

 

Ok.........I thought he was referring to my "Thats funny I have 2 friends who have done it???" post. But my mistake. Mark, Im so sick of this car stuff already. I dont know what I was smoking, buy a 305. I need smacked around a couple of times! Thats better.

 

Lighten up, as Mark noted I was just yanking his chain, in fact just now, re-reading the thread, I see you made the same reference...mine was not an intent to make fun of you.

 

SSE,

Without destroying the engine case, you really can't get 350 cubes from a 305. Technically, it would be possible if you bored "forever", then pressed in cylinder sleeves. But then there woiuld be so little of the case left to retain the sleeves that you would have the functional equivalent to a Ford Romeo (modular) engine, with all it's weaknesses.

To address the original question, you would spend a lot less money to get better performance from a 350 than trying to build up a 305 to similar power levels. If you read between the lines in 5-7 Kid's post, and read his other thread, you'll get a better idea of what's involved. Of course it can be done, but it's going to cost you.

 

Its all good.............Im just **** retentive right now... I seen what happened after I read it again............No harm done. I just wish I didnt have so much drama with this new engine...........By the way I found a 350 block for a 100 bucks.............Go for it or not????????

 

I'm confused. I see two sides of the 305 bored to 350 argument... if a smallblock is a smallblock, and 305 and 350's are both the same block, why can't the 305 be bored out more to a 350? Isn't that all the 350 is to begin with... a bored out 305? (If they're from the same block?)

I also can see how you're removing so much metal from the 305's block that the cylinder walls will get too thin... sorry if this is a lil too novice but hey... we all start somewere!

 

I agree, But these guys know a hell of a lot more than me and you...............:hail: :hail: :hail:---> to the PRO'S in here.

 

Simple... 305 is a different casting, and has different webbing than a 350. There not enough meat on the cylinder walls to go to a 350. A 350 has a 4" bore as opposed to the 305's 3.73". Thats a BIG difference.

 

I see said the blind man....thanks for clearing it up

DABE

 

 

Well now I have to decide.............Keep the 305 and get what I can out of it or Buy this 4bbl 350 block for $150????????????? I dont know? Isnt most of my stuff compatible now anyways???

 

I say buy that 350 block and put it on a stand, build it up as you can, and do it right the first time. I'd love to go to a 350 if I could, but I don't want to make that kind change yet. Since you're already there, I say go for it. I know you can get real respectable #s out of a 305, but its just so much easier starting with a 350. My friend has an lg4 and for probly 1500 in performance parts he has his in the low 14s, but he's not done. I'm sure headers will get him in the 13s.

 

If your gonna keep the 305,you'll get more hp going to a carb rather than TPI........

 

Umm, how do you figure?

 

Yeah really...

Let's not have another thread ruined to to a TPI/Carb debate.

 

I guess I should have said "unless you buy an expensive intake or LTR setup"you'll make more power with a carb.
Umm, that's what I figured!