Engine Builders Contest

[jschwartz]

Popular Hot Rodding had an engine building contest recently. The latest March issue has a teardown of the winning combination. The winner made 605 peak Hp. The goal was high average Hp and torque in a streetable small block. 366 ci max, pump gas, hyd roller cam, carburetted, no power adders (nos, Superchargers,etc).
31 engine builders participated,(One we all know, for some reason, failed to qualify). Here's a link to the results:
www.enginemasters.com/results.shtml

[JCof T.O.]

Wich company was it that put out that kind of power? I didn't see anyone with that horsepower.

[Stig]

Well, they weren't the worst by a fair margin either!

[jschwartz]

The number posted on the web are average numbers, which was what the contest was about. The magazine has the actual charts

[B1 ECC]

Jeff,

Interesting reading! On another note I got the jet extensions, but I was quite surprised that I could only fit the 1/2 inch ones, and they had to be trimmed by 1/8 inch otherwise they foul the float and jam the inlet valve open. Is 1/2 inch normal fitment for a 750D/P?

[ultimasimon]

Interesting

[Stig]

jschwartz said: The number posted on the web are average numbers, which was what the contest was about. The magazine has the actual charts

To get a 605hp peak and be quoted about 420 as an average is a hell of a variance! They must have done runs with it producing about 50hp to do that!!

[GTRCLIVE]

B1 ECC said: Jeff,

Interesting reading! On another note I got the jet extensions, but I was quite surprised that I could only fit the 1/2 inch ones, and they had to be trimmed by 1/8 inch otherwise they foul the float and jam the inlet valve open. Is 1/2 inch normal fitment for a 750D/P?

Sorry Mate forgot to say they do modified floats to suit the Jet Extensions.

[B1 ECC]

Thanks Clive, that throws new light on it! What I would give for some downdraft webbers!!!

[jschwartz]

The RPM range they used to calculate the average was 2500-6500 on all engines. That's why the average is so low compared to the peak HP.

[Vez]

Ah that makes sense, so if the engine is a little cammy then it wouldnt produce much power up to 3-3500 rpm anyhow, so the average is quite adversly effected!