Ragtop 99

iTrader: (7)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by squirrels:
<strong>Let me throw another question on this thread:

My eventual plan (a few years) is to put 7-8# of boost to my engine. I was thinking a stroker would be a bad idea because of increased compression. Would an all-bore motor be a bad candidate as well because of the thinner cylinder linings and coolant issues? Would I be better off just going with a stock displacement forged setup with maybe some thicker gaskets to drop compression?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">A stroker does not increase compression. With either set-up you can choose lower compression pistons and run high boost.

If you are going with boost, just build a good bottom end 8:1 346 motor, boost ported heads and let the S/C or turbo provide the HP.


IMO, an M6 all bore would be more fun on the street. In theory a stroker A4 sounds real good, but I don't recall anyone putting up spectacular track times with one.

Pro Stock John

iTrader: (34)

Two fastest 382 strokers I can think of...

SLP Project Z, 10.9
BradWS6, 11.13@122mph (LS6 heads)

382 stroker = increasing stroke to 4.000 from 3.65

382 big bore = increasing bore from 3.900 to 4.100

I have a ARE 422ci iron block, 4.075 stroke and 4.060 bore. So far I dynoed 450rwhp unlocked and 500rwtq thru a 9" on slicks. I'm doing LS6 heads and a new cam now and am hoping for 480rwhp unlocked and hopefully some mid 10's NA.

xxxhp

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by strife:
<strong>what are the sleeving problems?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The most common is having leaky sleeves which would cause blown head gaskets & motor burning coolant.

<img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" /> resleeved block

strife

How common are we talking about ?

is this even with the newer resleeved blocks from MTI and ARE ?

so resleeving is out of fashion have to see how it goes I have two blocks to go in

<small>[ August 17, 2002, 05:30 PM: Message edited by: strife ]</small>

VINCE

iTrader: (1)

I think the sleeving issue is pretty much resolved.. Either motor would be nice.. Anyone want to donate a 382 or 383 to me.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

383LQ4SS

iTrader: (33)

There is still a combo that hasnt been discussed. The lesser known "mostly bore 383". <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I have the LQ4 iron block bored to 4.06 and stock crank offset ground to 3.70. Comes right to 383. No resleeving to worry about and no huge cost for stroker crank. Its also a lower cost with the LQ4 as most shops dont charge core for the iron block.

VINCE

iTrader: (1)

If you wanted to go bigger with the LQ4.. Would you need a bigger crank?

The Alchemist

iTrader: (19)

Here is my dillema. I want more low end torque as my car is a daily driver and I rarely go above 4000 cruising around.

With that, would a 4.000 stroke be a better match for me in a m6 with 3.42s? I had 4.10s before and didn't like the constant switching of gears and feeling like I wasn't going anywhere. I've tossed around the idea of FI, but I'd rather stay n/a.

The cost is probably pretty comparable for the two (stroker vs. +bore) but which one will yeild me better low end, streetable torque?

I swear I remember seeing Nineball post a dyno comparing the 383 stroker to his 382 all-bore to his current setup. I thought all three had similar h/c header setups, but I couldn't find his post.

Thanks guys. This is a winter project that I'm trying to weigh heavily before making a decision.

99 Black Bird T/A

iTrader: (4)

Seems like it's been a while since any new 382 strokers were done. With the improvements in heads and reverse split cams over the last year, we might get to see some excellent numbers from the strokers soon.

muscratmauler

so what kind of power can be expected from say a 422 and what et and trap speeds?

also, a 6.0 iron block, does it need anything other than boring to make the 409ci with 4" crank?

thanx

Chris Jones

Here is my dyno sheet.

99 C5. 3.15 gears, Yank 3000. TPIS headers, stock cats, B&B Touring. LS6 intake. 30LB SVO injectors. MMS 388 all-bore (4.125" bore), MMS 229 cam, MMS Stage 3 heads.

Converter was unlocked. Stock transmission made 425rwhp. They said once the transmission breaks in I should get that 14rwhp back. Motor had essentially 0 miles on this dyno run. I'm going to redyno soon.

<img src="http://cjonesy.homeip.net:8080/vette/99/388dyno0001.jpg" alt=" - " />

2bseen

with my setup the stroker has ran great I didn't expect to run a supercharger when it was built so I have over 10 to 1 compression only running about 7# boost with just a few minor things to fix 600 rwhp is going to happen I am sure.

Redline-Motorsports

iTrader: (3)

Some of the numbers you guys are posting seem a little light. We are making 450+ at the rear wheel with cam and head setup! The motor to build is a 418. Use a 4.00" stroke and a 4.08" bore. This combination yields an almost perfect square motor and doesn't push the bore size to the point of being unreliable. You can make a clean 525+ RWHP and 535 RWFT with a mild cam and thats is a C5 chassis.

Call Dave at Cartek 1-908-654-9993 for the setup. I also agree that the "all bore" is a better option. The biggest advantage is that with the bigger bore you can unshroud the valves and really let those heads flow! These LS1/LS6 heads are highly effecient as it is let alone when there allowed to breath!

muscratmauler

well I've really been considering this: 4.1" bore with 4" crank 422cu
Does anyone know if there os another crank out there other than Lunati $2,000, that will be just as strong, and what will this motor spin up to?

What would happen with a larger than bore: stroke?
do peak torque #'s start to exeed peak hp when you go oversquare?

thanx a lot