I see these are one of the more expensive stroker kits. Are they worth the extra $$? Are they stronger or lighter or something? Anybody know, off the top of their heads, anyone using Lunati 383 LT1 kits and how they feel about spending the extra $$ for Lunati? Here's a link from Thunder Racing. And, as always, thank you for your time and input!

http://thunderracing.com/catalog/?a...&vid=4&pcid=116
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$2999.99 for a rotating assembly seems a little high to me. You could go with a Compstar Speed Pack for about $1000.00. You could also step up to a Callies Dragonslayer crankshaft, Compstar connecting rods, custom Diamond pistons, and Hellfire rings for less then the Lunati kit.

 

The Lunati is high quality domestic stuff. The Compstar is a step down. Foreign parts finshed and inspected here. The Dragonsalyer is a domestic forging. What is the actual difference in quality? Well, the Compstar stuff is way ahead of the cheap foreign stuff, but the QC is not and care taken in finishing is not likely to be as nice. Functionally, it will probably work fine in 99% of applications.

Rich

 

So in the end, is the Compstar stuff kind of in the middle as far as quality goes? Is it worth it, as far as "bang for the buck goes"?

 

I wouldn't consider anything less than the Compstar level of quality. Is better stuff worth it? depends on your budget, preferences, etc.

Rich

 

My personal goals are to add turbo to the 383. Not a dd, but would like to be able to run it on the streets on the weekends. More geared as a track vehicle though. Say, 650rwhp, should I pay the extra cash for Lunati or to Callies dragonslayer crank, Compstar rods, Diamond pistons and Hellfire rings?

 

I think those are good choices.

Rich

 

i believe u can get all of this from victoryracingengines.com
lunati sledgehammer crank
compustar h-beam rods
diamond pistons
for about 2k, might check with them on that, but that would be a pretty good setup, and is what i am going to run on an extremely radical 383

 

What are good choices: the Compstar and Callies stuff or Lunati?

 

callies dragonslayer cranks are top knotch, and compustar rods are pretty good, and diamond pistons are, IMHO the best out there

 

$3000 for a Luntai rotating assembly must be a misprint. What is it a billet crankshaft? wow.

I would put the Compstar stuff at the top for quality, not middle. It's off-shore metal but held to high standards and the finish (heat treat and stress relief) is as good as a the mother Callies Dragonslayer or the competitor brand Lunati Sledgehammer. Bang for the buck, #1. I personally would use a Compstar crank before a Lunati Sledghammer.

Check out ROSS pistons too. They are using the same ideas as Mahle, the ideas such as keeping the ring package thin and "lite" and keeping the oil rings out of the pin boss whenever humanly possible.

Many already mentioned the value and quality and bang for the buck of the Compstar speed pack. Look into that. $2000 for a balanced forged rotating assembly at that quality is hard to top.

One last mention of the Mahle piston. Their $500 "powerpack" piston/ring/pin kit is plenty strong for most applications. The Mahle is the default piston supplied with the Compstar speed pack. The more I look at other brands of pistons, Ross, Probe, KB, SRP, FM-Speed Pro, the more I'm impressed with all aspects of Mahle.

Karl Ellwein
Ellwein Engines

 

Karl, thanks for adding your insite on this topic even though it's not my thread. Concerning your last paragraph, do you think the Mahle "powerpack" kit could take a 150hp shot of nitrous? And if anyone else would like to throw their thoughts in too, I'm all ears. Thanks, and maro, I'm not trying to jack your post. Just thought you might be interested in this info also.

 

No, this isn't just MY post, it's for anyone needing info on stroker kits. I just happened to type the originating question.

 

http://web.camaross.com/forums/showthread.php?t=509591

Interesting read, talking about pistons in the advanced section here.

Seems there is a diverse amount of opinon when it comes to engine parts.

I put my money on Compstar/mahle

LLoyd reccomended Mahle to me for LE3

 

[QUOTE=Z-RATED94;4499995]. . . . . . . ., do you think the Mahle "powerpack" kit could take a 150hp shot of nitrous? . . . . . . . ./QUOTE]

Yes the $500 Mahle can take a 150hp shot of nitrous. I've been hitting my flat top Mahle with 175hp nitrous in a 383 stroker for a few years now and the motor is still as strong as day one, (seems to be even stronger actually).

Karl