My Muscle Motors still going strong after 3 years.
There a good bunch over there and always willing to help you out.
http://www.musclemotorsracing.com/
I'd say try them or Damon Kuhn at www.diamondbackengines.com
NSS is his specialty if thats what your going to run.

I have had many dealings with Muscle Motors, I recommend them to anyone. Eric and Mike go out of their way for you.
Joey

i have bought several kits from mike and eric has been awesome, i have went promod racing,and going adrl racing now i have my car in the 3.90 in the 1/8 and 5.97 in the 1/4. i still have allot of MM parts from my wedges days,now I am a Bae blown 526 HEMI, I had a 528 b1 wedge in a 2850 chassis car went 6.90s on a 200 kit and 7.24 on motor,and had b1-ts from MM parts went 6.80s on motor,and 6.40s on 400 fogger. I also have a 440 block that is a 543 on MM parts that my 235 red runs 240s 6.40s on motor alone, MIKE AND ERIC are awesome , there are times problems happen,but they went threw hell to get my stuff right,I have been a hemi dealer for 13 years and they are one of the true mopar performance guys,that run what they sell, try them you will be pleased.

I know a handfull of guys that used them.All had problems.but did get resolved eventually.But engines did have too come back out and sent back.Maybe they had some help problems???No one has a perfect record.Be clear on what you want,maybe even take some advise on parts,even question them on the parts they are using.He does know how too make some powerfull engines.

No problems here. Many kits, several wedge builds as well as hemi.

I have bought alot of parts from them and customer service is EXCELLENT.
Mike and Eric are Great to talk with and get the Correct parts from the first time.
They have been a Huge Help in getting my stuff running.
David

I can't get to the parts on Mike's site, only his blog.

Diamondback Racing is not out of business,been dealing with them the past 3 months.
Sorry off topic.......

Anyone buy one of their street killer crate motors?

This is what I was looking at.

I have bought a rotating assembly for my car and many other parts for it. Great customer service and Mike know his stuff pretty well. He has been very helpfull in my build since we had some issues. He was always availiable and answered most of our questions. Always willing to help!!!

I ordered some parts from there and Mike personally called me with a few questions and suggested how I could do the build and get the same results for less money. Pretty cool that he basically took money out of his own pocket to help me.

I did get some used heads that had obviouslt not been throughly checked out when MM did the work on them. In their defense, the customer might not have asked for any checking to be done but I would think that some basic inspection/correction would be in order for a set of prepped heads. The car was slow and MM name was tagged with it since the heads came out of their shop.

It is a hard balance between getting a sale and keeping up your rep, I get that. At the same time, I wouldn't want parts that I worked over going out without a good checking.

So I would tell them I want to spend the extra to get a fully checked/blueprinted deal and not just a slammed together engine with minimal inspection.

I have a Diamondback 408 Stroker, great motor, but it's internals are a total mystery.... Bought it from a racer who couldn't say no to nose candy, and needed money.

Hey Gator how did you get a 235 in dragster to run 6.40's on a 440 block 543? I would be impressed if it ran 7.40's on all motor. What is the 240 number, mph? I need to call Mike I need one of those super 543's for my 235 spitzer. There are some big named people who have 655 predator motors that are not even close to those numbers.This has to be a world record, some one call guinness.

Mike built my 511 for me with a Solid roller, runs on pump gas and says its good for 625HP and 675Ft/Tq. Reasonably priced. Andrew

My 451 Stroker shortblock was from Muscle Motors (about 20 years ago!) I delt with Chuck Senator, and he was really a great guy, was willing to spend quite a bit of time explaining all the options and pros/cons of various configurations.

Like the others Muscle Motors is top notch guys in every way. I have an old 474 combo of theres, nothing but run after run. Might finally have to replace the crank this year. Combo has been together for 15 years or so. With no problems whatsoever thus far. Car is consistant as they come as well. The only thing they need to work on is there web page. See ya, Ken