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Old 11-06-2019, 08:31 AM   #66
IROCZman15
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Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 2,100
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I have been in contact with S&W racecars over the past few months and we were initially shooting to have me drop the car off mid November, but they have two builds over there that have had customers add-on to the project so the timeline has shifted and I should be dropping the car off in about 3-4 weeks. I am hoping that mayyyybe around thanksgiving actually since I'll be out in PA just 8 mins away from the shop at my in-laws house for Thanksgiving. fingers crossed
- I am still undecided between a mild-steel vs a chrome-moly bar setup.?? Thoughts?

I did decide that I wanted to NOT have the two diagonal bars going from the main hoop and over to the driveshaft hump. I wont be seating passengers in the back, but i will want the space accessible for gear/stuff. Since I will be getting door-bar swingouts which will also be removable... I am hoping to have them weld in a lower (yet non-NHRA legal), support bar for chassis stiffness. It will be permanent and mounted to the same plate that the front of the swingout bar will mount. chassis stiffness when the upper bar is removed is the goal here.

I made a sketch of all of this and it is attached below. I also will be getting the 5 point harnesses with the quick disconnect cam-lock style lock. I want the rear support bars to be bent so I can maximize trunk space and possibly put some sort of sound system on top of the trunk hump between the bars.



Since the roll bar project is delayed, I might go ahead an order the engine now. I was going to wait and do this early December but maybe I'll do it now. Nyes racing engines told me they get really busy starting early January, so November December is the best time to order it and have it built. I called and spoke to them a few weeks ago for about 25 mins. The engine (link above in other posts) will make 525+ streetable horsepower and 500+ tq. It makes power down low and mid range. This will work well with my 1 3/4" mid length headers since it will not be an all-out righ revving top end horsepower engine setup. The rings will be opened up for a 200-250 shot of nitrous as well.
I will be sent the complete build sheet with parts numbers, specs, and info. Engine comes dyno tested and with dyno sheet. 20-50 or 15-40 valvoline VR1 recomended. there should be no issues with blowby or cranckase pressures due to opening up rings for nitrous use. does not use a pcv system, just drop in breathers, Dart Pro1 heads on a Dart SHP block; the Dart specs can be found online....or if i find time i'll post them here.

-any final thoughts from the group before I order this??
when I call them this friday, I am going to ask about:
will I need a vaccum pump for brake system?
-does SHP block require a special type of ol pump or will basic SBC long/short just bolt right up?
-compression ratio?
-specific engine mounts for dart shp block or traditional sbc?
-throttle cable bracketry and TV cable advice?
-can I use evans waterless coolant in this all new engine and all new radiator/hose/pump setup?
-anything else??


so, any last advice on roll bar? might be leaning to mild steel bar. not sure if chrome moly is actually much weight savings... when I did the research its all about wall thickness and less material. CM is more brittle and needs to be tig welded. mild steel has more "bend" than break to it. more expensive for a few pounds of weight savings. and on a street car that will do moderate racing, I might go with mild-steel.?












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Last edited by IROCZman15; 11-06-2019 at 09:05 AM.
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