My plan is to install a 400 crank and install .030" over pistons.I do understand the machine work involved on the journals(depending on manf).I plan to run a set of s/r torquer heads from World.They have a 58cc to make some great compression.I also plan to utilize the roller application of my block going with a Crane xfi roller cam.I already have Edelbrock headers,a stage 2 jet chip,and 3:73 gears.I have pondered over this engine for almost a year.All my research points to a stroker engine of the L03.If I do this I can save money and time in keeping my current fuel del. system.If anyone has done this already please let me know of any problems you encountered.A335 C.I. engine @ 230hp would sound pretty good and offer great performance .

 

Before you get slammed with the proverbial "why not get a 350" thrown at you Let me chime in for a sec.
I too have been wanting to try out the whole "305 stroker" Idea for awile now.Basically I have all the parts I need beside the stroker kit itself.instead of the heavy a$$ torquers I'm going to use 463 ZZ4 heads,ZZ4 cam and everthing else in my sig with a 3000 stall.I figure with A lightweight car and a good tune with it all I would have a low 13 sec to mid to low 12 second car.
One thing you have to remember is that it would be cheaper to build a 350.I just want to build a 305 stroker for giggles.

 

Giggels is the main reason for me too.i really want to push the build with .060" over.Just to tell the tpi guy i just wasted .You got beat by a 340 chevy!

 

The biggest reason, is that it doesn't have a 4" bore. Not even getting into the $ to $ argument, the 305 is really cripled by the small bore.

 

The chip tuning issues will probably be a little rough, fortunatly there's a whole gang of members on here who have done massive ammounts of work on that front. If it's what you have and what you want to do go for it. The SR Torquers or the ZZ4 heads are a great match, as is the ZZ4 cam. The block notching involves cutting out journals for the crank to pass through, I've watched my mechanic notch a 383 block in about 1/2 an hour with a die grinder. Good luck with whatever you decide.

 

With .060'' over this 5.0 should heat up pretty quickly ...

 

The 335 has been done before. Different. Potentially you could get a tighter, more efficient chamber, but youll have a hard time squeezing good sized valves in there with the smaller bore. The valves are quite close to the cylinder wall.

If your looking for cheap torque, get a goodwrench LM1 crate 350 and toss some good iron heads, like vortecs or similar, and 1.6 ratio rockers on it. With the weenie little cam in it, itll torque down low like its nobodys buisness and be good for at least 250 HP.

 

I thought there was problems with boreing most 305 blocks to .060 over???

 

As was I. It was my understanding it could only go .030 over and no more.


Anyway I've been wanting to do one of these since Super Chevy built Project Blue Streak. I could justify the cost of the crank just to switch to something stronger. However the machine work to the block, still being a 2 bolt main, and only around a 25HP gain by Super Chevy's flywheel motor testing just doesn't justify it for me. I should go back and read to see what the torque was. I know it went through the roof wen they switched from a carb to TPI. Yes TPI not TBI. Would be interesting to see what a TBI with all the same equipment would yeild though. I just wish I had the first part on the buildup . . .

 

Where's Fast355 when you need him, he's the guru of 305 TBI setups. Search his name and you'll see some of the stuff he's done with them.

 

I was always curious about the idea of small CI torque montster like a stroked L03. mostly b/c i have one. and I am not a huge fan of "drop a 350 in it" attitude. granted they're cheap and easy to come by. and wayy cheap to build in comparison to ford, mopars and even foriegns. at the same time you could probably build one hell of a spinner if a shorter stroke fit too. another project and another day i guess.
I'll look into a 305 build, and let ya know. I do know that HOT ROD mag. built a 305 and made a good amount of hp. I'll see if i can find the article.

 

What does it take anyway ?

Can you buy a CAST (i.e. cheap) 3.75 stroke crankshaft, WITH a 1 piece seal, AND can you reuse your stock (5.7) connecting rods and pistons ?



PS/ Some of those Hot Rod articles are just way overdone. Like the so called L98 build, where they bought a completely different block, heads etc, so it right away ceased to be a L98 engine /DS

 

Yes, you can get a cast 3.75" stroke crank with a 1 piece RMS. No, you can't reuse the stock rods and pistons. You can use one or the other, but not both.

 

So one could use the stock pistons, but would need new rods, to go with the new crankshaft ?

 

Yes, you could use a 3.75" crank along with stock 305 pistons and stock (5.565") 400 rods, or you could use a 3.75" crank with aftermarket 335 pistons and stock 5.7" rods.

 

The company you are looking for to purchase the stroker kit from is called "Powerhouse Power plant". they just came out with a new kit called the "305 stroker 335 kit". it includes a stroker crank, 10:1 pistons, new ring set, CR1 5.7" rods, rod/main bearings all for just $599.00. you can add a new balancer or flex plate for an extra $75 and the whole assembly is balanced from these good people for just $90 or so more. This was plagerized from http://www.goingfaster.com/spo/modthel03.html

Link to kit http://shop.enginekits.com/osb/itemdetails.cfm?ID=341

 

Yeah, I was thinking the other day it was about time again for a link to the nonsense and half-truths on Black Echo's page to turn up again.

If you want to know why nobody builds a 335, compare the $599 sticker price of the enginekits.com 335 kit with the $499 price of their 383 kit http://shop.enginekits.com/osb/itemdetails.cfm?ID=81. The $100 difference in price covers the cost of the 350 core to build the 383.

 

LOL!!!

 

That link in itself, yes, does prove why it's a stupid idea.

My engine in my car broke down, IF I discover the rod's broke and I need the crank reground, I would consider going the 335 way, but NOT if I have to get:

1) New pistons
2) Bearing spacers
3) New balancer


Like I said before, if "all" needed would be a cast 3.75 crank with 1pc rear main seal, and new connecting rods, and one could reuse the stock pistons and balancer, yes I would consider doing it.

 

reading on that one page some one linked in bold i found

http://www.goingfaster.com/spo/325_h...chevrolet.html

and i been pricing the parts needed to do it casue it got me all giddy casue i love my 305 , but i think it would still be cheaper to buy 350 crate like a zz4, but still with added power like a zz4(or even just the mods listed in that link) you would need 1000+ in susp chassie adds like SCF's Torque Arm's + more , then a stock 700r4 would that handle well with all the new power added , would want to strenghten that up , new riims with wider tires ? hell the list must go on =) and can

as much as i want to buy these parts i think its cheaper to buy some one elses car they put together and work were they left off or finished

 

305's got some other limitations as well, such as selection of heads. You have to either find 350 heads with small chambers, or get some S/R Torquer 305 heads. One can mill 350 heads down to match but then you're still limited to valve size as well.

Heck I wish I had a 350 laying around right now, I got old valves laying around from an old Fiat project, heck I even got Manley intake ones and also 1.625 (or whatever size they are) brand new never used still in the box exhaust valves.

Can't use those one the 305 heads.

 

This statement accurately sums up the stroker 305 concept. Those that have actually done the 335 stroker (search here on TGO) almost immediately have buyers remorse when the fellow next to them spent hundreds less, had 15+ extra cubes and lots more power because they went with a 350. If you call local engine rebuild shops the cost of doing all this work to a 305 is often more expensive than doing the same exact work on a 350. Not to mention the increase in parts price as mentioned by Ape.

 

Not to mention the limitation of heads for the 305's. One can build the 335 but once done, one's rather limited.