1968 Camaro turbo goes 5.80 ET 255mph in 1/4

[JBrady]

Fuel injected twin turbo hemi. Haven't seen a power claim yet but should be north of 3000hp.

This car is running 10-20mph faster than the other top Pro-Modified cars.

The term "no replacement for displacement" needs to be amended to "no replacement for TURBO"

To put this into some perspective this performance is competitive with the Top Fuel Funnycar runs from the 1982 Summernations in Englishtown!!!

Notice the SMALL exhaust primaries on this engine. Can't be shure but look to be roughly 2" pipes.

 

[XR8tt]

Yes & the pipes we can see go to the wastegate...
I guess if a street 5 ltr can get away with 1 5/8 primaries then 2 1/8 + on a 600 ci [?] Hemi is about right ??...

I see he's looking for sponsors ???

 

[JBrady]

Yes & the pipes we can see go to the wastegate...
I guess if a street 5 ltr can get away with 1 5/8 primaries then 2 1/8 + on a 600 ci [?] Hemi is about right ??...

Although you know others may not notice that the wastegate is mounted on the outside radius of the collector that looks to be 3.00-3.50" OD. This wastegate mounting is highly effective due to the internal flow bias towards the outside of a turn. So, this incredibly powerful engine is running 2-2.x" primaries into a 3-3.x collectors... this is a size many 500hp street engines try to run effectively.

Also, did a little checking and found the following rules posted on wikipedia. Isn't it interesting that blown engines running methanol are limited at 527 CID and 2700lbs total weight wereas the nitrous/gas cars can run an 820 CID engine and can be much lighter at 2375lbs. With the performance of this turbo car blowing everything away there are rumors that turbo size will be limited and probably other limits as well.

Also, at the "estimated" 3500hp quoted below and making your comparison to 5 liter V8 street engines running 1.625" exhaust primaries... lets give the 5.0 an optimistic 500hp (unlikely with such "small" pipes) we are looking at 7 times the flow on this 3500hp turbo engine... 6 times if it ONLY makes 3000hp... so 7 times the X area of a 1.625" (1.75sq/in) exhaust tube = 12.29sq/in = bigger than a 4" OD tube... clearly this must be impossible. Either that or most people run TOO large of pipe on their turbo primaries...

Wiki quote:
The engine can either have up to 527 cubic inches and be supercharged and methanol fueled, or it can have a larger 820 cubic inch engine that utilizes nitrous oxide and gasoline.

For the first time, turbocharged engines were permitted for the 2008 IHRA season.

These engines put out an extremely large amount of horsepower, some at approximately 2500-3500 H.P.

There are weight limits, according to the type of engine used, 2375 lb. for nitrous powered cars, and 2700 lb. for supercharged (or blown) cars. Most supercharged engines are based on Chrysler's 426 Hemi engine.

 

[XR8tt]

YEP..
For street people run too large exhaust .. I have a 337 twin turbo Ford Dart block Windsor push rod engine with 482 RWKW which is roughly 650 h.p.. Guessing 750 to 800 at the motor ???
The primaries are 1 1/2 .. Back pressure starts being an issue when it gets over 2 to 1 of boost.. At max power its 28Lb at 16Lb boost...With .63 A.R / 76 trim turbine housings..
Keep in mind you need some pressure to drive the compressor wheel and keep in mind this is a street engine.. Yes boost / power can be turned down to 8Lb which is just under 300rwkw...
The exhaust is under pressure with high velocity so header size can be way smaller than N/A engines even with twice the power ...
The class rules seems to have changed ?? Or in this organisation...
I thought twin turbo's was classed as two multipliers so they had to run a single turbo ..Assuming this car is running twins ??
Some classes the turbo is restricted in size ...
At higher boost pressures the wastegate is more efficient as there is far more pressure to make them work..
Some GOOD ECU work in this car .. With two step / pre stage tune... Good stuff...
The rules TMK have been NO ECUs .. Which in the past has made it difficult to run turbo engines reliably... The sponsors kept Ecu's away as they are behind old tech..
Yes we have similar cars down under running low 6 seconds... Who would have thought a few years ago ???

 

[spdrcr771]

Thats just insane. Thanks for the post Jbrady, I love seeing some of the stuff you find.