02 LS1. M6.

I've heard there are 383 stroker kits, and 402 (?) stroker kits.

My questions are where do I get the kits, how much do they cost, and on-top of the kits is there anything else I would need to make sure I dont end up blowing up my engine in the constant daily abuse that I put it through?

What would the estimated power be, with the 383 or the 402 (?)?

My only modifications (as of now) are a SLP air lid, and Flowmaster muffler. Not much at all.

 

Yep, they make stroker kits alright! I don't know all the companies that make them (cause there are certainly a lot!) but I know that Lunati (LS1 stroker kits) is one of the better companies (IMO). They make kits for 382's (stock bore) or 383's (bored .030" over), 395's, and 408's!! While I couldn't find prices on their site, I checked out Thunderacing.com and found Lunati kits there (linky, linky). The prices for the complete stroker kits seems to be just shy of $4000, and then you've gotta factor in labor costs if you can't do the work yourself.

Hope that's a good start for you!

 

Hmm... suppose I kept everything else stock, except did all the necessary swap to a 396 stroker... what kind of power would that generate, alone?

For these kits, is there any other work that needs to be done so my engine can handle my modifications?

 

... or Texas Speed (www.texas-speed.com). They are very helpful and patient there. They have multiple options for stroking out to various ci's. Money will be your only limitation!
If you're not dead-set on stroking, have you considered supercharging? or turbo-charging? Probably similar in cost and the change-over is less hassle. Just throwing options your way...
Daryl

 

A 396 stroker... that would be amazing. Talk about Camaro heritage, that is a great idea... could even put 396 badges on it. That would ROCK!

 

You'll get more power out of running a bigger cam and ported heads in a stock stroked engine and cost less than stroking an otherwise stock engine.

If you're going to go through the trouble of a total rebuild that stroking will require, you might as well do it right and add a cam and heads and get the full power benefit of stroking.

Otherwise you'll end up getting beat by guys that spent half of what you did in their cam, heads, and tune on a 346.

 

Would a "modestly" built stroker not be cheaper to build than a S/C'd engine, and yet still put out around the same amount of HP or more? I mean, using ALL forged internals, titanium this and that, the best heads and springs and rockers and all that stuff would obviously cost a lot of money, but if you used the stock rods instead of forged rods, maybe ported/polished the heads instead of buying aftermarket ones, and didn't have to go all out when building the stroker, couldn't you get a lot of power still, but end up cheaper than installing a blower?

This is totally open to discussion. I'm curious what other peoples' thoughts are. I did have a 383 stroker in my '81 Z28, and for a "mild" engine, it hauled a$$, so I still have faith that a 383/396 LS1 stroker engine would have a strong advantage over a simply "heads & cam" 346 LS1. I'd love to build an LS1 stroker myself one day, so I'd like some feedback here as well!.

 

i dont know what your goals are but ARE could probably build you a badass 436 stroker.they seem to lead the way with ls1s right now.i believe cartek is running a 436 now too they just built.i dont know if theyve run it yet but theye built alot of fast cars for people.

 

The thing is, w/the added cui the engine will try to take in more air. If the heads and cam aren't up to it, you aren't going to see the full benefit of going with a larger displacement. Think about putting stock 305 heads and cam in a 400 SBC. It'll choke it down because the 400 needs more airflow. A 327 will run with a 350 with stock cam and heads. Extra cui will not benefit you much unless it can breath. On dirt track cars in a class where cam size is limited and they had to use stock heads and intake, I've seen 355's totally outrun 383's because of this.

Pick up the GMHTP mag. The LT1 vs LS1 shoot out. Most of the LS1s are 346s running mid-low 11's w/ aftermarket cam and ported heads. The one stroker in there is running low 10's w/cam and heads, but he wouldn't be that quick w/out them.

As with any engine, most of the power gains are going to be in the heads and cam.

 

Don't forget the 427!! I know a guy who has a 98 Formula with the MTI 427 stroker package. Currently he is pushing 550rwhp, and is about to hit 9's in the 1/4. Truely awesome. If you have any questions, his name is NastyC5 and you can find him at ls1tech.com or kyfbodies.org .

 

Well, why not go ALL OUT and build a 454 LS1?! (no $h!t, in a recent issue of Chevy High-Performance magazine, they built a 454 cu. in. LS1!!! ).

However, I THINK that Desolate_Flux is looking for an AFFORDABLE option to get more power out of his LS1 (and is weighing the option of either stroker, or blower). A 427 LS1 would probably cost around ~$15,000 at least?! (if not more??) That doesn't exactly sound "easily affordable" anymore!

 

A 454??!! Which month of CHP magazine is that in?

 

October 2003 issue of Chevy High Performance, page 104.
(it actually worked out to be a 452 cu. in., but it put out 511 HP / 553 lb-ft on a baseline run, then 554 HP / 577 lb-ft after adding a bigger throttle body, MAF, and 1.85 RR's).