Re: Re: RE: 1/4 mile times on the R/T

From: Jim, Donna, Erin, and Brian (leefam@wcc.net)
Date: Wed Aug 12 1998 - 11:48:38 EDT


At 10:12 AM 8/12/98 -0500, you wrote:
>I am running a Vortech S-Trim that is claimed to be 7lbs of boost but I
>really don't think at 5000 rpm it is giving me that amount of boost. I
>don't have an intercooler but I do have some duct work feeding cool air to
>the K&N cone filter. I did encounter some problems hooking up. I had to
>be real easy coming out. Sorry for the Rustang comment it was only meant
>in fun. There were some pretty rusty Mustangs there however.
>
>I have never run the truck before so I don't have any before and after
>times. If mine R/T is like most others it would have been running in the
>mid to high 15's stock. That means I decreased my times by more than a
>half second. The intake has the 90 degree bend, but the voulute is
>relatively straight with a slight dog leg right into the throttle body. I
>also talked to a guy that knew someone that tapped into their valve cover.
>I really don't think the SC sits up high enough for this.
>
>The only other modification I have on the truck is that I installed
>Magnecor 8.5 MM wires. I will be installing some roller rockers in the
>next few weeks however then I will have to take it easy for a while.
>
>As far as the HP goes, Vortech claims anywhere from 35-45% on a stock
>engine. Using the 220 as a starting point that would mean I could possibly
>get anywhere from 297 to 319HP. If hp is calculated using the 1/4 mile
>times then I think this truck if using better tires would be in the
>14.5-14.6 range. If my R/T started out at say the 190-200 HP range that
>number could range from 256 to 290 HP. It seems by the calculations that
>were presented here that 278 HP may be a close figure if my truck stock was
>around 200 HP at the rear wheels. Maybe I'll try to get some dyno numbers
>on it soon to verify. I think to get some more Hp out of this combination
>I would have to tweak the computer and do some exhaust work to help remove
>all of the air the SC is flowing. These modifications won't come for a
>while since I'm running out of money.
>
>However, I am not disappointed in the truck at all. It received tons of
>attention from others and it is a great truck. It was fun picking up my
>father after my last run then heading for the highway.
>
>Dan
>
>

A better way to estimate horsepower is to use the mph figure. Usually
these are a lot closer to your real rear wheel horsepower ratings. ET's
can vary greatly because of traction, yet mph usually don't because you're
still going 1/4 of a mile.

Brian



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