My hydr roller is smooth @ 1800 rpm in OD & converter locked up,512ci,255,258 @ .050 cam, I am on the VERY edge for my set up, has taken a lot of tuning to get it happy in all driving conditions.

maybe some USA made bcr main caps?

As mentioned before, a light shot of horsepower on demand (N2O) is, in my opinion, the best way to achieve your goal at the track and still meet the streetability goals you have put out there.

600 streetable, mild mannered HP is pretty easy to build, reliable and not overly expensive. With most fully equipped, ~3,500lbs. all steel cars, this is mid to low 11's.

The NX kit I bought was under $500 for everything and knocks about 1 second and 10mph off with very little effort.

I wanted a NO COMPROMISE street car and, for the most part, that's what I built. The rollcage and spool are exceptions to that.

There are plenty of 600hp 3500-3700lb street cars that won’t run a “ten”.

Wrong gears, wrong suspension, wrong tires, wrong converter, poor driving technique, etc.

And that doesn’t even take into account it may not have a good tune, or have adequate fuel delivery, etc.

Making the 600-700hp is the easy part.
The combo outlined in the opening post will easily do it.

10’s....... also relatively easy....... if no compromises to the gears, converter, tires, fuel system, etc, are involved.

Each “streetability” compromise is a bit of time added to the slip.

If every combo ran exactly what the owner thought it should, there wouldn’t be any of those “help me get my car to ET better” threads(and I wouldn’t get as many phone calls and emails along those same lines).


As an example.....GY3...... 511, cnc ported heads, roller cam...... should be pretty darn close to 600hp.
Car should be in that 3500-3700lb range....... not running 10’s.