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Duramax vs GCSRT8


This is a discussion on Duramax vs GCSRT8 within the Ram Srt-10 Racing forums, part of the Viper Truck SRT-10 Discussion category!
No problems like that here in Cali....




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Old 10-15-2015, 08:34 PM
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No problems like that here in Cali.

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Old 10-15-2015, 08:43 PM
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WOW, that did not take long.
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Old 10-15-2015, 09:04 PM
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They raced from a dig to 20mph. Can't you tell?

Sent from my SPH-L520 using Tapatalk
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Old 10-15-2015, 09:22 PM
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i can't see crap
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Old 10-15-2015, 11:43 PM
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Quote:
Originally Posted by rottenronnie View Post
Some of the diesels are getting crazy fast. I've noticed a huge jump in mph in the trucks that have had the money spent on them.

$14,000 for major head surgery alone on an inline 6 cyl. Cummins (and "a few more r.p.m." and some other stuff) = 1900+ horsepower.
It’s ridiculously simple to get 500whp/1000wtq out of a newer Duramax. The new Ford diesel transmissions easily stand up to 700whp. The diesel world is just a whole different ball game. The big benefit for me is having a low RPM boosted application - it works very well for playing on the street at higher elevation. I know you can appreciate how DA effects horsepower, but most people seem to overlook it completely. I bet the SRT8 in the videos is good for a 15 second 1/4 on a day like today, whereas the Duramax probably only loses a couple tenths from a sea-level pass.


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i can't see crap
You can't see the videos in the original post?


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They raced from a dig to 20mph. Can't you tell?

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I got out of it at about 85mph in the first video. I shift into 5th right at 80mph and I'm not supposed to be putting full boost to 5th or 6th gear on the stock trans.

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Originally Posted by 10-1=9 View Post
WOW, that did not take long.
Street racing is a lot like sex: get in, get it done, get out. Neither takes more than about 15 seconds.
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This has to be a sick joke

Last edited by caveman; 10-15-2015 at 11:49 PM.
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Old 10-16-2015, 02:15 AM
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Old 10-16-2015, 06:40 AM
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Street racing is a lot like sex: get in, get it done, get out. Neither takes more than about 15 seconds. [/QUOTE]

I don't think your wife and/or girlfriend would agree with that statement. Lol
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Old 10-16-2015, 12:17 PM
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Caveman:

Yes, altitude plays a huge part in performance, as you are keenly aware.

A couple of brand new QC SRT-10s around here were running 15.3s; Same truck could run 14.6-14.7s at sea-level on an average day.

Far more accurate than e.t. for power comparisons though is comparing m.p.h. and they would pick up 8 or 9 m.p.h. at sea-level.

We beta-tested the first E-Force Supercharger kit installation in Canada for Edelbrock on an SS Camaro (Jason Fairley's shop) and it was down on power 10% across the board compared to sea-level numbers.
It picked up and was bang-on where it was supposed to be once it was able to run at sea-level (with zero changes). I.O.W. it gained 10% more power at the lower altitude.

Throw in anemic weather fluctuations and our 3800 foot mean altitude changes to 7800 feet (or worse). NOW, the low power really becomes evident!!
You likely experience the same thing in your area..

Some guys say they can notice the pressure drop on a compression test at the higher altitudes. This stands to reason, but I've found it inconclusive with a standard graduated compression tester.

Anyway, 10 p.s.i. supercharger kits will develop 7- 7.5 p.s.i. here in Calgary but will provide their advertised 10 psi gain at sea-level.

And you can typically expect 2.75-3.0 p.s.i. out of a stock Roe-style supercharger kit at our altitude (same I'm sure, where you are).

So, in other words, racing at a sea-level track compared to here is like bolting on a 3 p.s.i. supercharger; it's the same I'm sure where you are.

F.I. engines don't seem to be impacted as much as the N.A. vehicles, but even top-fuelers (or anything else) won't break records on high altitude tracks where you or I live.

I haven't really kept track of the diesels' performance changes due to altitude but unless they are ingesting large volumes of air (modified head), they likely suffer less at high altitudes than a gas engine.

It can get expensive to get something to go fast reliably.

Racing at sea-level is a cheap way to get big gains!

And yes, technology is allowing BIG power from the diesels these days.
The tranny business is booming: "Gee, why can't I pull my 30 foot trailer up a mountain at w.o.t. with my double-chipped diesel"??

But $14,000 for ONE Diesel head?!?
And some guys thought Strikers were expensive.

Hey, maybe I'll design my own cylinder head for the Cummins and call them STOKERS.
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Last edited by rottenronnie; 10-16-2015 at 03:10 PM.
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Old 10-16-2015, 02:25 PM
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Full B&B Exhaust WITH Cats
Unported Street-Striker Heads w Custom Roller
Unported O.E.M. Intake Manifold
FSTJACK Hand-Ported TB
MONSTER R/X Dual-Vacuum Catch-Can
A built 48RE transmission that actually keeps working!
Tuned by Maestro Chris Jensen
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Old 12-21-2016, 08:26 AM
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Sold my SRT8 GC for the truck. I do miss it at times but glad I made the switch. Maybe down the road ill buy another and make the Jeep my daily. It was BADA$$ to own.
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