Don Terrill’s Speed-Talk

Years ago with a 500hp 383 combo with my 9" 4200 rpm converter I was running 11.4s @ 123mph A week later I run with a new 8" converter and picked up 3 tenths in the 60ft which carried incremental entire run but was down nearly 2mph. 11.10 @ 121.30mph A few guys said converter slip but I j...

As you know Kevin there is a cross over point with rear gear etc as in a weekend cruiser and we have to keep it real as well. Which puts me in a bit of a dilemma. Do I morph towards more track orientated and go faster? Or forgo the ever increasing cost of fuel and continue to drive it a street car ...

I am a fan of the slide rule,it is something to work towards. With my own combos it is usually 15hp or so relevant. As been discussed previously if you are not using the potential power of the engine work on the rest of the car and leave engine alone. This is another chart worth looking at 20220815...

Speier Racing Head 205cc CNC port and a Profiler casting.

There was a 113 headed L98 with a mini ram that predated this one.

Cold air certainly one of the bet hedges against detonation. That is if the science posted here at Speed-Talk has any merit. Which it does. Chad Speier did a neat thread on his TPI CAI. https://www.thirdgen.org/forums/fabrication/768690-my-cold-air-intake.html Do you know Chads horsepower with his ...

Cold air is certainly one of the best hedges against detonation. That is if the science posted here at Speed-Talk has any merit. Which it does.

Chad Speier did a neat thread on his TPI CAI.

https://www.thirdgen.org/forums/fabrica ... ntake.html

That's as I figured Stan. Thanks.

... the significant effect of inlet air temp on part throttle cruise knock. Also their expectation that well done vacuum advance can improve fuel economy and driveability. I've experienced both of the above cruising my iron headed SBC posted above. Subtle spark knock at very lean cruise and plenty ...

While my engine combination is done and dusted, I'm still noodling around with various sims as well as DV's Torque Master cam predictor. This is in regards to induction length and how it plays out. Below is a screenshot of my engine data with a peak HP RPM target of 6000. Now, using the induction le...

I've iron RHS heads. 10.4:1CR. 2" 2 row Griffin aluminum radiator. Conventional water pump and pullies. Electric fan. 195°-180° fan switch, 180° t-stat. Also run a full heater circuit for cabin defrost etc. 50/50 coolant, tap water. No overheating despite being stuck in traffic at times. Yes, i...

Carnut1 wrote: ↑Thu Apr 18, 2024 1:53 pm Runners will stay divided, we will use the stock length and 2nd harmonic.

One bit of modelling I did on a similar build was that a 22" intake tract will show a peak in HP RPM at about 4900. A 20" is 5300 RPM. That's using the 2nd wave.

A low power 302, you could just get a 305 or better still a 307. Not necessarily low power but that's subjective really. I'm thinking more the advantage of the larger bore which the 305 or 307 don't have. Maybe a 2.02/1.60 valved Vortec head (modest flow but certainly enough for the smaller cubes)....

First of all, with a full length TPI will maximum power come after 5500 RPM? Some of the joy with the TPI is the incredible strength from low rpm, there are other manifolds for higher RPM. How large is the engine going to be? A 400 definitively needs larger ports than a 350. If we stay at 350 or 35...

There was story going around a few years ago, something I read in a newspaper about an artist who painted and sold his work at local flea markets and such. Just an honest guy cranking out one individual piece and then another. Years later, this same artist was on a tour of China for some recreation....

I use the Drag Times DA calculator for my correction factor. Is this reasonable? its better and more accurate to use Air Density OnLine's Calculator ( even though it sometimes calculates wrong Vapor Pressure value ) it calculates the Density Altitude Feet closer than DragTimes or Richard Shelquist ...