The Official Hot Rod Thread - Part 2: No Replacement For Displacement

[churchmouse]

In the show, Ryan said his motor was a 541 I thought.

I know he laid out a figure just south of 550. They were all crying that the Hemi was north of 500 so I found that kind of amusing.

 

[thunderchicken]

In the show, Ryan said his motor was a 541 I thought.

It is a 541 cuin but the engine is known as a 481x..kind like taking a 460 and stroke it and poke it to 588. Basically it started out as a 481 all billet engine

 

[Bigtanker]

It is a 541 cuin but the engine is known as a 481x..kind like taking a 460 and stroke it and poke it to 588. Basically it started out as a 481 all billet engine

Ok. That makes sense.

 

[thunderchicken]

I know he laid out a figure just south of 550. They were all crying that the Hemi was north of 500 so I found that kind of amusing.

Yeah I thought it was funny Mr Laughlin pointed it out. But yeah on that Richard was right. He did say he was bringing the same car, same motor etc. They never even discussed any cu in limit for the race unless it was edited out or I missed it

 

[churchmouse]

All I know is it hauls ass.

Did they say 4.041 et

 

[thunderchicken]

All I know is it hauls ass.

Did they say 4.041 et

Which one? They can both haul the mail. I mean low 3.90s in the 1/8th is freakin moving! I have stood at the finish line when a pair of cars have blasted through at that speed....it's amazing.

Wish I had the $$$ to go that fast

 

[thunderchicken]

All I know is it hauls ass.

Did they say 4.041 et

Yep that was one of their runs. Last year Chief and Alex both ran like 4.30. But neither car had many runs on it

 

[churchmouse]

Yep that was one of their runs. Last year Chief and Alex both ran like 4.30. But neither car had many runs on it

Chief will have his hands full with that red Camaro.

 

[thunderchicken]

Chief will have his hands full with that red Camaro.

Absolutely

I was just on another web site. And saw an article with Ryan and he said that his motor mad 4500+ HP on the dyno.

Just for anyone interested the 481x came from the idea of making a bbc/hemi hybrid. They have like 570 cu in version that make more than 5k HP.

 

[churchmouse]

Absolutely

I was just on another web site. And saw an article with Ryan and he said that his motor mad 4500+ HP on the dyno.

Just for anyone interested the 481x came from the idea of making a bbc/hemi hybrid. They have like 570 cu in version that make more than 5k HP.

That is freaking insane.

 

[thunderchicken]

That is freaking insane.

Aint it though. Remember when a guy with a door slammer that made 1200+ hp was impressive?

 

[Bigtanker]

Just for anyone interested the 481x came from the idea of making a bbc/hemi hybrid. They have like 570 cu in version that make more than 5k HP.

Any link to the details on this? I'd love to read about the history of it.

 

[RustyHornet]

So I’m looking at cams. I’m not seeing one that adds 200hp. I haz confused.

 

[thunderchicken]

Any link to the details on this? I'd love to read about the history of it.

Don't know how to add a link from my phone. But just google either Prolineracing engines or Steve Morris Enginelabs.

 

[thunderchicken]

So I’m looking at cams. I’m not seeing one that adds 200hp. I haz confused.

Custom grind and spary....guarantee 200 hp incrase

 

[RustyHornet]

Custom grind and spary....guarantee 200 hp incrase

Good idea!

 

[Bigtanker]

Found it.

Steve Morris Engines Unveils Twin Turbo "Anti-Hemi" 481X Build!

As stated earlier, AJPE’s 481X engine platform is a hybrid between the big-block Chevy and Hemi architecture. It retains the big-block’s 4.84-inch bore spacing, but utilizes mostly Hemi patterned auxiliary components. And AJPE teasingly calls this combination the “Anti-Hemi.”

So what exactly is the "auxiliary components"? Cams and valvetrain (Minus the whole hemi head)?

 

[churchmouse]

So I’m looking at cams. I’m not seeing one that adds 200hp. I haz confused.

Hell I remember seeing a 700HP chevel and almost swooned. Tech has come so far with electronics and the modern turbo.

 

[thunderchicken]

Found it.

Steve Morris Engines Unveils Twin Turbo "Anti-Hemi" 481X Build!



So what exactly is the "auxiliary components"? Cams and valvetrain (Minus the whole hemi head)?

I'm not super familiar with it. But from what I gather by looking at them in a number of cars it looks to use the hemi style cam, magneto etc. Being all billet it's really a custom design. Pretty sure the heads use the hemi bolt pattern but the heads are their own design that only share some characteristics of a BBC. The whole 481x came from Alan Johnson (Top Fuel genius). He took the top fuel hemi and used the BBC bore space to stay under a 5" bore and created a cylinder head that isn't a hemi head but is kinda sort of like a BBC big chief head. From my understanding in pro mod anything with a 5" bore spacing gets a lead weight trophy so this came about so guys could get the weight break of a smaller bore.
It is amazing what some of these guys can build from a big chunk of aluminum.

 

[churchmouse]

Yep that was one of their runs. Last year Chief and Alex both ran like 4.30. But neither car had many runs on it

No prep or prep.