So here's the question: Can you have the Buick 350 bored, and the pistons cupped to turn it into a 383 stroker the same as you would a chevy 350? And if not, why? It's been bouncing around in my head the last couple months to turn my little 350-2 into a beast. I'm not willing to remove it and drop in a 455, because I want people to know what they've been stomped by. :Brow: But I havent found any mention, or reference to a Buick 383 stroker. So I'm left to wonder.. will the crank and rods out of a 400 not fit? Does cupping the piston sleeves ruin the block? And so forth... I believe I've asked before, but never received a straight forward answer and I cant seem to find the thread. Any help would be appreciated.
the 350 is pretty much maxed out for stroking..you might be able to offset grind the crank... but you wont get a 383 out of it...you can definatly bore it out though, ta perfromance and poston has all the performance goodies for your 350, and if you want forced induction you can either follow the twintub thread and get an idea for a custom turbo setup or you may head over to xsperformance.net and getyourself a supercharger kit.
Offset grinding is stroking. The Buick 350" is maxed out for stroke(for all practical applications).:Smarty: Even aftermarket rods have proven to be a challenge to not hit the cam, without the right clearance. The 3.85" stroke is bigger than some big blocks. Put your effort into the proper 'Buick' clearances, proper cam selection to match the heads, etc. The 350 Buick heads can be ported to flow better than just about any other iron small block head out there. Whoever does the heads needs to know that the stem height/tip height needs to be properly set. This isn't a small block Chevy!! Best way to make more power will be with boost.
If you can get a aftermarket crank, then you can run Honda bearing and run a 4.00 stroke with a 1.88 or 1.85 bearing. You would do this by getting a set of Yates style rods from a Nascar setup. I got a set of Billet 6.400 rods that use a Honda bearing and are .937 wide. This would give you a 371 cu.in. with a .040 over. That would be about the best you can do for cubes. I don't think there are any blocks that will safely take .060 over and even that is only a 375.
you get a 383 stroker by putting a 400 small block Chevy crank in a 350 SBC block. there IS NO 400 small block Buick. the 400 ( and the 401 Nailhead for that matter ) has a 4.75" bore center ( along with the other two BBB's, the 430 and 455 ) while all of the SBB's ( 215,300,340,350 ) have a 4.24" bore center. needless to say, aside from the cam-to-crank clearance issue you'd never even get a BBB crank into the 350 block in the first place. physically unpossible. on the plus side, if you're willing to spend the dough it might be possible to resleeve the Buick 350 with 4" bores and that would give you 387.04ci on the stock stroke. :grin:
I believe Bill M. ran that idea past his engine builder. Just not enough room I think he said. Since the LS1 and 318" have 3.9xx" bore sizes - I wonder if that might be an option. Sure seems like it would unshroud the valves nicely, and improve the already decent fully ported heads' airflow.
I have a stock bore 350 in a 3800lb Skylark that has run 11.92 (all motor ) A 383 would be nice but for what it would cost for the short block I would spend it on the heads . Just my 2 cents .
ou: First, KB ran aluminum is his test motor that was published here so there is a little room. Second, the rod journal is not moving any closer to the cam. You are just getting stroke by making the existing rod journal smaller on the "inside" so the rods wont be any closer to the cam. They are close but an offset grind should have no problems fitting. The small journal would be a problem on a stock crank as strength would be an issue. So, no KABOOM. Agreed? Just a weak crank.
I like my 455 and 350 but with all that I am hearing about the possibilities of stroking a 350 makes me want to look deeper into it . I have some very personal vendetas around here and would love to post a kill story about my little 350 . Please keep the info coming .
someone make it a reality and then make kits available. then the alum heads and killer intake will be next
Somebody make the parts , I volunteer to be the test guinea pig . By buying the parts , building the motor and having ALL the fun of running the h--l out of it . Lets hear more from the ones in the know about how to make it .
Wow, 11.92 without a power adder from a 350 is incredible! I'm guessing you've spent many an hour on the heads! Please, please tell us more! There is an interesting thread over on the buickperformance board about cutting Mopar single plane intakes into four sections and making them work on the 350 block with adapter plates. It's been tested and does work but there hasn't been any companies interested in producing them as of yet.
There is an interesting thread over on the buickperformance board about cutting Mopar single plane intakes into four sections and making them work on the 350 block with adapter plates. WTF??? :shock: linky please?
