the LG4 in my 87 trans am is going to need a rebuild by this and i was wondering how to build it into a stroker motor. i know that it could be done, but i am not clear on all the logisitics of it. i would like to have as much info as possible before i get into the build up so any help is greatly appreciated. thanks guys.

peace,
menace

oh yeah, if anyone has any power numbers for this engine, please post them.

 

Theres really not much point. Its going to take alot of the following: time,money,effort.
Do you really want to do that with a 305? For less than what it would cost to have the block prepped for the crank, and to get the crank itself and different rods or pistons, you can get a good 350 block and have more cubes. And no clearancing BS. No special small base circle cams for any reason. No grinding rod bolt heads.

The only reasons I came up with to stroke a 305 is:
Keep a numbers matching block for show purposes
Keep a 305 block for **** retentive smog inspectors
Practice making a stroker motor out of a boat anchor for experience to build your planned 383.

Personally, I'd either pick up a 350, or build up the 305 you have and forget the stroker idea.

 

Damn, and I was all ready with the "why polish a turd" reply

If you're $$ limited, I can see the reasoning for rebuilding the original engine...no need to spend additional money on another block. But when you start getting past the "norm" for a rebuild and get into stroking, why limit yourself in cubic inches?

But if you must, do a search..there's more info on stroking on a 350 to 383 on this site than you'll ever get in reply to thisthread, and everything should still apply.

Ofcourse I still tweak and add on to my 235 I-6, but that's another story

 

that makes sense...i didnt realize that it was so much more involved than stroking a 350. i would like to retain the 305 just to be different, but i am not really familiar with what kinds of performance parts would work well on this engine (as opposed to a 350) i know that, while they are similar motors, what works great on a 350 wont necessarily yeild the same results on a 305. i am considering a high performance rebuild with the weiand 142 CID single carb street blower. what kind of power numbers would i be looking at with this setup??? and what other options are good for high power from a 305?? i want to stay away from nitrous b/c this a daily driver. thanks in advance for any and all help.

peace,
menace

 

i have a 335 stroker

367 hp at 6000
375 lbs at 4000

not a ****load of power but not bad. say what you like about em. but i like mine

 

i have a 335 stroker

367 hp at 6000
375 lbs at 4000

not a ****load of power but not bad. say what you like about em. but i like mine

 

Its exactly the same amount of work as stroking a 350 to stroke a 305, and thats most of the problem people have with doing it. You do it to a 305, you get around 334, whereas with a 350 you get 383. I think its kinda obvious which setup will make more power, and with the same cam the 383 will idle better.

If it were a simple drop in deal, I'd say go ahead. Since you are planning on a sc, I wouldnt worry at all about stroking unless you just want to spend the extra 500 or so dollars on parts and clearance the block for the crank.