Seeing as how engines get dyno’d more and more often, it’ll be a way to compare all NA engines against each other.

Even if a dyno sheet isn’t available, a time slip can get pretty close if some info is known. this would be great because it’s only based on power per cubic inch, not drag strip performance where there are to many variables and many engines never go down the track
the old kings of Olds power wasn’t a fair comparison of engine efficiency due to car weight etc. my other formula for placing engines on a list was based on track performance, cubic inch and weight.

the only thing needed for this list is max HP and cubic inch. maybe add a few other details like comp ratio and heads ?

 

Aren’t you likely to still be the leader In this competition? Not a challenge, just a question. I’m not sure your EM build is gonna be beaten for displacement vs power, at least NA.

​​​​​​….

 

no. look at what Trovato just did with that 1,000+ hp big inch build. then there’s that other rocket block build that made big power too. there’s more

 

I’m a dog at about 1.27
But It would be fun to see the #’s.

 

yes it would be fun to see. one of the complaints about the old list was from guys who never took their cars down the track, but had dyno numbers, got left out.

 

I always enjoy seeing any and all engine builds.
Besides bragging rights, what would be the goal?
Would it be a way for people to see what is takes to make certain numbers? If so then some additional info like fuel type or compression ratio would be valuable.
I think additional details add to the learning experience.

 

the goal is to compare n/a engines of different displacements against each other without the car being involved. similar to how the engine master’s competition ran different displacements..but not average, make it simple..just straight up HP.

yes I agree on showing some details like comp ratio and heads used. also where max HP came in. that should be enough to make it simple and clean

 

Not that I think I would be anywhere up on the list, but in my case all I would have is drag strip data and accurate car weight. That can work as well right?
Count me in, I have a much improved shortblock coming this winter. Maybe I can be second from the bottom instead of last.. :-)

 

track data is good enough. would need race weight, ET, MPH, track elevation, temp, relative humidity and barometric pressure at time of run. time slip and cubic inch. the Baro and RH is easy to get from most weather data stations in the location of the track.

 

478 sb on pump gas 680 HP

 

IMO the best way to compare is a calculation with ET, weight and CID. Too many inflated dyno sheets that will never run the number down track. A prime example: I recently rebuilt a 423 SBC that was originally from Steve Schmidt Racing Engines. The dyno sheet that originally came with the engine claimed it to be 835hp. After the rebuild with a few tweaks, it dynoed 810hp on the dyno I use. The customer put it in the car and it was immediately .05 faster in the 1/8th in the same weather. At 2400 lbs that's approximately a 30hp gain despite showing 25hp less on the dyno sheet.

 

I agree..but there are way more guys with dyno sheets than track numbers these days. if ALL the dyno data and conditions are given, it’s easy to spot the bs.

it would also be a good way to educate guys on what to look for when having their engines dyno’d.

so all the info would be needed as a prerequisite if a dyno sheet is given. both uncorrected and corrected numbers. the old kings of Olds power list was a load of bs too as guys added weight to their cars when they were actually potato chips..that was the running joke about that list.

I think it’s easier to spot dyno bs than it is to find out the true weight of a car.

 

that would be up there on the list.

 

I don't understand what a list would prove, unless it's just for prosperity. Without any guidelines (rules or categories) it would come down to how aggressive the build and the budget to back it up. Too many variables.

 

what did the old original list prove? It didn’t prove **** because most of the ones at the top of the list were potato chips.

 

I liked the middle of the old list.
Streetable cars over 3000lbs.

It always gave me something to shoot for.
It was probably the reason I wanted 10’s

 

That list was weird on ROP. Top car was a twin turboed rail. How does a naturally aspirated door slammer get info from that?

 

Personally the list don't make a difference to me. The same could be said for this list then. My 427DX 11.6:1 pump gas motor makes 645 @ 7100 (1.51hp/ci) on the dyno. I could be better than 1.7 if I didn't decide to make it cheep to run by moving to 14.5:1. That would have been the same cost to me to build. I decided on a 650 combo so I could run in the 10's. I met my goal.

 

exactly…but you also had to believe everyone was being honest about their cars weight. it was still difficult to compare though. using my other formula would get you your answer

 

So why not put your 427 on this type of list? was your car on the original list?

 

I just posted my HP/CI, if someone wants to put it in a list that's fine. Yes the old list had my Gold 70 442. I think it was listed as 11.6 but that was before I got around to freshing it. In the end on a decent day it was good for 11.3-11.2's. My current car is a White 78 Cutlass , best to date has been 10.6's. Hopefully I'll get it sorted out early next season.

 

what is your trap speed in 1/8?

 

6.7's @ 100-101

 

Didn't we just have some NO KINGS rallies recently?

 

I stop at the last gas station before my local track. I think it's Shell V Power (93). I need to check that one day.

 

Duh, do you care to give more details on your engine build? I'm looking to build something similar one day. Thanks.
Sorry if this is slightly off topic.

 

Ok, quick run down.
DX 4.125 x 4.00 for 427
11.6:1 CR
Steel aftermarket rods
Good set of ported Gen3 heads from BTR.
Solid Roller in the upper 250's low 260's @ 750ish lift
Victor max ported intake.
Dyno carb was 950HP now has 1.500 x 1.750 modified strait leg double pumper.
Steffs oil pan and out of the box pump.
Nothing crazy, just good.

 

Your running right with my NA 350 smooth idle (224 @ .050 cam) L98 headed 350 Camaro, nice work.

 

850 HP 500 cu in. 12.6 compression car was 2850 lbs ran 9.06@148+ at Byron. This was 15-20 years ago that 1.7 HP per cup in. Heads flowed about 340 cfm. Single dominator.

 

And, hop a Coke bottle

 

that must have been a real happy dyno. with that et, mph and weight…you’re missing 90 to 95 hp.

it’s actually only 1.51 to 1.52 hp per cube.

 

You're right as usual.........................I find it interesting people who build engines, race cars in most cases have no understanding of observed crankshaft HP from drag strip performance. The reason I like drag racing is: Because when a car is raced at a known verified weight, and the numbers come up, there's no arguing the observed crankshaft HP.

 

I get 721 HP myself, nothing wrong with that.

 

When you have a bad driver and/or an improperly set up suspension, etc., you’re gonna tell me that won’t affect your time slip numbers? Bullshit.

 

Here's the problem with your argument this particular time:

1320/148 = 8.92 really not that far off, certainly not 130 HP off. You sound a little touchy about track performance, maybe you've had a lot of bad drivers? LOL awwwwwwww

 

the MPH is the giveaway.

stay in your lane mr know it all

 

417cu 656 HP 1.573 BTR built

 

Can you post the dyno sheet? Not underestimating anything, just asking questions.

 

Come down and play!

4.150 piston, 3.850 stroke x 2.5 mains lightweight Bryant crankshaft with spacers. Batten heads. DX block. 40 years of street racing with Lighting Rods.

11 years with a 70 Buick GS 350, I believe was a Wednesday built car that all the best parts coming together. Its was just faster than almost anything factory. Back in the day.

 

what does you car weigh with your fat azz in it?