Not sure if i should be in this board or not, but here's the deal. I'm planning on rebuilding my 305 TPI (which was originally a TBI, so i got the small stock cam). I just recently found out that I have 22 lb injectors on it (guess it came from a 350 after all:| ), so i figured, while the motors out, why not up the cubes a bit and put in a cam. So, I was thinking along the lines of, since the 305 has basically the same crank (or at least stroke) as the 350, why not up the stroke from 3.48 to a 3.75" 383 crank (which, if i researched correctly, a 383 is a 350 with a 3.75 crank). I'll get it to about 330 cubes. I'm trying to get my motor as close to a 350 as possible without going out and buying one, or pulling one out of a junk yard, just so i can make use of the 22lb inj. The cam i'm lookin at is a roller cam (since i already have rollers, and trying to keep it somewhat reliable) w/ a duration of 270/276 and .452/.465 lift for $260. It may be too much lift for the application, but I figure it would make up for the smaller-than-350 valve size on "crappy" 305 heads. I'm not looking towards better heads, porting, boring the block, or anything like that. Remember, strict budget. The crank i'm lookin at is a $280 cast steel crank new from Jegs (can't afford forged). to compensate for the high lift cam, i'm getting stiffer valve springs and hardened push rods. I just want my motor to work better. 22lb inj.'s don't work too great with the 305 tbi and tbi cam.

Oh, do you think i'll need new, shorter connecting rods? What else should i look into? Do you think this would be a descent setup for the 22lb injectors? Where will my comp. ratio be?

P.S. I know i'll need to burn a chip for this, and i'm not looking for any intake mods or anything, just a 'rebuild with a slight mod' type of deal. I'm on about a 700 dollar budget, + or - a hundred or so.

Please help. need input.

 

Oh yeah. Just figured i try something a little different. Haven't really heard of any stroked 305's.

 

well your gonna pay up the a$$ for the stroker kit, how many miles on the motor? if a lot, why not think about boreing it out and replace the cam, and replace the injectors? also the cam is the same specs of the one i'm using, a crane powermax 2032 roller, but i have world product s/r torquer 305 heads intake exhaust and headers that compliment it, also the rpm range is 2000-5500 tpi falls off at 4500, i have a carb. maybe someone else can add some info.


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86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi

95 Beretta Z26, 3100 V6, 4 Speed auto, stock

 

If you are on a $700 budget then forget about stroking the 305. The machine work alone would be pretty hefty, without the crank or balancer. If you are wanting a $700 upgrade, go to the junkyard and find a low miles truck 350 shortblock. Rebuild it (rebuild kits in summit for damn cheap) and slap you 305 heads and intake on, and get a cheap cam from summit. It wont perform very well, but better than your 305. The 334 idea is very expensive and pointless because it would cost just as much to do a 383 (which would be MUCH better). I dont mean to be like everyone else who says "drop in a 350", but with that budget you cant do much.

just an idea

 

You aren't even going to be able to get all the parts you need for a 334 stroker kit, let alone the machining, for $700. I'd suggest you shelve your rebuild plans for the time being.

You should be able to get a cam, even a roller, for less than $260. A used L98 would be a nice step up, and cost you about $100-$150 with a new timing set. LT1/LT4 are another possibility, and are available as take-offs.

What you really need to improve is your exhaust. That you can do within your $700 budget ($325-$360 for TES or Hooker w/y-pipe, $60 for 3" cat, ~$275 for a 3" cat-back).

Your next problem is the LO3 heads. Your decision at that point is whether to stick with the 305 and get World S/R 305 Torquer heads (about your $700 budget again), or go out and get that 350 core and freshen it up. But, do yourself a favor and don't put LO3 heads on a 350.

Without the exhaust, though, none of your other upgrades will produce the desired results.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2200 stall TC. Ported World 305 heads, Crane PowerMax cam. ZZ4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster. 2.93 limited slip, Spohn SFCs. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

[This message has been edited by five7kid (edited November 14, 2001).]

 

Oh yeah, I forgot about the swirl port heads when I said that. It would still be better, but those heads suck. My mistake.

I assume you didnt upgrade heads with the tpi swap.

[This message has been edited by 85transamtpi (edited November 14, 2001).]

 

Okay. Well heres what i have right now. the reg. 305 tbi motor w/ the tpi, 22lb inj. (which you allready know), adjustable fuel pressure regulator, and the borla catback. I can get a set of SLP 1 3/4's with the y pipe for 300 from my neighbor. as far as changing the injectors goes, i already tried that with a set of 19lb accels from jegs, and they didn't fit. apparently the 350 manifold is set for 22lb injectors, which are a bit longer than the 19's. heads are stock. not much done here. oh, and 3.23's. But i guess i need to know what to do w/ what i got. maybe at least a cam. Well, if scratching the rebuild idea, what should i do to wake it up a bit? What if i was to get the SLP's and some 1.6 roller rockers?

 

Oh yeah, about 82000 miles on it. had an oil leak at one point and ran on about a quart or 2 for a few miles (din't realize it till i saw my gauge bounce around from 30 to 0 psi a couple of times).

 

The best thing you can do to improve that engine's performance is to improve the heads. There is nothing else that even comes close in bang-for-the-buck terms, including stroking it. Keep in mind: to put in a stroker crank, you have to take the pistons out of the bores, because you'll either have to change them or the rods to make up for the different stroke; that means you're into it for the price of rings and bearings, plus the rods (or pistons) and crank, plus the machine shop labor to hang the pistons on the rods; plus, since they come out the top, you're also going to have to remove the heads anyway. For $30 something you can buy the Standard Abrasives porting kit. Hmmmm.... $700 for somewhat less than 10% more HP, or $30 for about the same HP... I can't figure out which one is the better deal... somebody step in and help me here while I consult my financial adviser...

That is not a good cam for a 305 TPI, you will regret it. You need less duration than that, and more lift, in a cam specifically designed for TPI. Call Comp or Lunati and talk to them, they'll hook you up with the right thing, for about the same price.

You should be able to pick up a set of used 305 TPI or L69 heads for next to nothing. Even if you have to spend $100 on them, and then get a valve job besides (which you would be a bonehead to tear a motor down to stroke it and not do anyway), and get the SA porting kit, you're still hundreds of dollars ahead of the stroker cost.

Basically, the program you have outlined is anything but the best way to attack your situation for minimum bucks. You need to do more research before you buy anything, to avoid major high-$$$ diappointment and more trouble than you ever knew possible to get into.

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"So many Mustangs, so little time..."
ICON Motorsports

[This message has been edited by RB83L69 (edited November 14, 2001).]

 

Hey, thanx alot. This is pretty much my first time if i'm gonna tear into my motor any time soon (which i don't think will happen till the summer, when i have more money, and more tinker time, and do a good job). Until then, since i don't want to tear into my heads right now, how about the headers, y-pipe, 3" cat, and 1.6 rollers for now, until i get the chance for the stuff that counts?

 

Without question, on your budget, the headers and exhaust is THE way to go. You will gain at least 20 hp (and probably closer to 30 hp) and probably see a nice little 1 or 2 mpg improvement, too.

Plus, the headers, etc., will work just as well on a 350, if you choose to go that route