under West Coast rules you would have to weigh 3500 lb limited to two solenoids and a dash 4-line not a cheater line... I used to drag the big block shitro let's on spray.Completely different rules and I don't think this is about power adders we all know that your car is badass and leave it at that.

... in my opinion my car is not fast enough I will continue to work on it and it was never the subject it was small block vs Big Block.. there is a s*** ton a four second small Tire cars in this country only a handful of fast N/A cars.. look at the heads-up classes back East you will have five power Adder classes a total of God knows how many cars and only one naturally-aspirated class with maybe five cars or 10 why is that
.

power adder is the "easy button" LOL
NA takes a lot more finesse and you have to actually use ALL the power you have. It is rare to see people go really fast NA because its a lot more work (at least my opinion) It is sad that more people don't race Mopars heads up. WIth the tall deck height and great heads available I just don't understand why you don't see more Small block mopars… It seems to me to be a way better platform than a big block. AND thanks for the compliment, but I consider my car slow, for now at least

Some of the fastest mopar door cars I have seen in person have been SB powered with W series heads. One was a 70 Challenger that had a repurposed older Nascar engine. He changed the cam and made a dual 4 sheetmetal intake etc. The sound this engine made turned heads the moment it hit the water box.

Any heads up stuff is a money pit. But N/A heads up, wow? Comp and Aussie Pro Stock have the most powerful SB's in the world. The cost isn't even on the same page as anything being discussed here. Neither is the longevity. There hasn't been a B-1 in Comp for years. There have been a scattering of SB Mopar but shortage of good blocks is an issue.
Doug

That's why there are limits on turbo and blower size: to keep you buying those $$$ N/A parts.

And those $$$ n/a parts would be?

Really - you don't know what I mean?

I just like this sound 🙃

https://youtu.be/QfiwYYn4KQA

love the sound of it too

That's how it should sound. Like old modified eliminator stuff. Very nice.

that is only part of the rules, the rest of the rules dictate the required weights for big block as well as small block combinations.

To keep the field level Big Blocks have to weigh more than small blocks at the same cubic inch.

SMALL BLOCK BASE WEIGHT (max cubic inch 470)
300 = 2400 + Over 300 add 1.25 lbs. per cubic inch
340 = 2450 + Over 340 add 2.50 lbs. per cubic inch
360 = 2500 + Over 360 add 2.75 lbs. per cubic inch
380 = 2555 + Over 380 add 2.70 lbs. per cubic inch
400 = 2609 + Over 400 add 2.65 lbs. per cubic inch
420 = 2662 + Over 420 add 2.60 lbs. per cubic inch
440 = 2714 + Over 440 add 2.55 lbs. per cubic inch
460 = 2765 + Over 460 add 2.50 lbs. per cubic inch
470 = 2815
BIG BLOCK BASE WEIGHT (max cubic inch 640)
440 = 2860 + Over 440 add 2.60 lbs per cubic inch
460 = 2900 + Over 460 add 2.55 lbs per cubic inch
480 = 2940 + Over 480 add 2.50 lbs per cubic inch
500 = 2990 + Over 500 add 2.45 lbs. per cubic inch
520 = 3039 + Over 520 add 2.40 lbs. per cubic inch
540 = 3086 + Over 540 add 2.35 lbs. per cubic inch
560 = 3133 + Over 560 add 2.25 lbs. per cubic inch
580 = 3178 + Over 580 add 2.10 lbs. per cubic inch
600 = 3220 + Over 600 add 2.00 lbs. per cubic inch
620 = 3260 + Over 620 add 1.80 lbs. per cubic inch
640 = 3296

Even with the deduction of 125 lbs the big block still has to weigh slightly more than the small.

Not sure if I agree but the example of the N/A class would suggest that Big Block are quicker per cubic inch.

Love the sound of a high winding small block

these rules are somewhat to help keep the field level

So, the best engineer using the best parts and most experience and driving skill shouldn't win?
Level field: heads up.
Anything else: give your friends* an advantage. NHRA started doing it in the 1950...

* important sponsors, people with money - like NASCAR

In any MAX EFFORT deal power per cube is ALWAYS going to be a SB end of discussion. Anyone who thinks different is in denial period!! It aint just a Mopar thing it is a thing for all. Look no farther than a class like Comp or NA 10.5

Ultimate NA power, again MAX EFFORT it is always going to go to the BB hands down end of discussion!!

As for NA10.5 rules. those weights listed are just the BASE weights. There will be adds and minuses depending on combo. They get way more into the weeds than most on Moparts will care to know. Rules are in place to try and level the playing field and in our class are ever evolving, as racers are ever pushing.

A BB Chrysler only gets a weight break for a TRUE wedge head. A 600-13 head would actually get a weight penalty for its NON STOCK bore space, we also have a weight structure tier that takes into account distance from the deck to the intake port. As most everyone runs heads that are extensively modified from stock.

Chris went 8.40's in the Cuda with the B1. Eventually I went 7.90's at 171 with the same engine after some updates at 2975.

Al is correct. HP/CID will always favor the SB. BUT... At equal displacement the bigger bore will ALWAYS make more power. Always. I don't even know why this is argued.

If you can run a small displacement BB or a big displacement BB I'm picking the BB every single time. I don't give a single crap what the HP/CID is.

I'll always take the biggest bores, the widest bore spacing and the biggest intake valve I can get. That makes horsepower. And horsepower always wins...if you can get it to hook.

Look at the turbo guys switching to big singles. They don't have to pull as much power out down low as the big single turbo doesn't make as much power down low.

what Bore,stroke combo are the top fuel Hemis?

Fuel is a liquid bomb. Fuel hates big bores. Fuel engines use small bores and long strokes because of the detonation prone nitro.

What the hell does a blown fuel burning engine have to do with a N/A anything?

Just asking..

Most are as follows:

4.200" bore

4.500" stoke

499CID

But again they have nothing to do with HP in a N/A motor


55lbs of boost running 100% Nitro

The cylinder wall need to be extremely thick to make sure they stay round and they don't break.

One Cylinder makes more HP than most complete N/A engines