I saw a pair on display at summit in Ohio. They were pee wee stuff compared to the other brands offerings. They looked like 200 cc heads🤣

Yes, Mopar BB heads are very small compared to something like a BB Chevy head. That is why it is easier to make power with a big BBC than a big Mopar BB. The TF270 heads provide the average backyard builder with a good 700 head. A pro engine builder can get 800 hp out a set of TF270 heads but it gets hard to make more than that NA.

If you want to run a BBC then you can buy a 1000 hp pump gas street engine. The BBC has become a much better engine for making power over the last 30 years because GM has continued to upgrade the design. Mopar never upgraded the big block design so we're still stuck with two piece rear main seal and other outdated features. I have a customer with a Mark VI big block and it has substantial upgrades when compared to the muscle car era design.

Yes, Mopar BB heads are very small compared to something like a BB Chevy head. That is why it is easier to make power with a big BBC than a big Mopar BB. The TF270 heads provide the average backyard builder with a good 700 head. A pro engine builder can get 800 hp out a set of TF270 heads but it gets hard to make more than that NA.

If you want to run a BBC then you can buy a 1000 hp pump gas street engine. The BBC has become a much better engine for making power over the last 30 years because GM has continued to upgrade the design. Mopar never upgraded the big block design so we're still stuck with two piece rear main seal and other outdated features. I have a customer with a Mark VI big block and it has substantial upgrades when compared to the muscle car era design.

... Guess I am on the naughty list as Santa didn't bring mine!!!! Birdtracker

Should be REALLY simple...whomever has a 270 head just measure the pushrod pinch area and report back please. For reference, the SR's I did about 1.21 is near max in width without repair work.

Ehhhh if omeone does try to make BETTER parts, like cylinder heads most the Mopar purists will just throw it under the bus and complain that its not a BBM looks like brand X stuff to me....Ask me how I know

For people trying to build serious & competitive Mopar-based engines, it's got to be waaaay frustrating at the lack of options or availability.

A 572 built with an Indy block and 572-13 heads is a pretty stout combo for bracket racing. It costs a lot more than a 1000 hp 632 inch BBC crate motor, but it will make good power and it looks like a Mopar

It is that is now easier than ever to build a 700 or 800 hp BB Mopar that uses "classic" Mopar parts and looks like a Mopar. If a guy is happy with a 9 or even 8 second door slammer than everything is cool. I don't worry about this too much. Buick, Olds and Pontiac guys have had this issue for years. Ford guys have some nice options and Chevy BB guys have tons of options. Mopar guys are better off than the BOP guys but don't have the factory support of either the Ford or Chevy guys. Just the way it is due to decisions made by Mopar Performance years ago. They could've solved the block problem 20 years ago but they didn't. They could've solved the head problem 20 years ago but they didn't. Nothing we can do about their failure to make good decisions years ago.

Trick Flow did a big favor for the 600 to 800 hp crowd, and Indy still has good options for the 700 to 900 hp crowd so 90% of the bracket racers are covered. It is just the die hard Mopar guys who want to make more than 1000 hp who have it tough.

And Mopar guys will put a standard port window on a 500+ cubic inch engine for fear of losing torque. A std port B/RB is comparable in size to a “peanut port” BBC head.

Has ANYBODY updated the combustion chamber from 1958 yet? That seems like it should be a zero $$$ cost upgrade because you have to make a pattern for the mold anyway. Make it a shape that works better. Lots to copy from.

Kevin

I have done both and the costs are not that much greater for a BBM than a BBC at 1000 HP. Cranks, Rods, Pitons, Rings, Lifters, Cams, Oiling parts, a;l those are are the SAME cost pretty much. I have both so I know. Feel free to price and aluminum BB chevy block and get back to me. Heads of similar performance potential are pretty much the same cost. Porting is porting don't matter what head it is the price is the same. The difference is options for the BBC guys, the initial cost of an ironblock is another, although most those lower dollar Chevy blocks need work to make them useful at that power leve,like cam cores, lifter sizing so that brings the cost more inline. Also the secondary market for BBC stuff is much larger than the BBM one. Building new it is a few grand either way, so if a few grand is gonna break your budget on a 1000hp combo then maybe you need to rethink your hobby and finances.

I have seen more than my fair share of crate engines from many of the larger name Chevy shops. Most do not perform anywhere near their posted HP numbers. The exception to that rule is Reher and Morrison, and again feel free to look at their prices and get back to me. I have seen the inside of them as well and many are downright SCARY when you get in there, the lack of attention to detail and quality workmanship, again Reher is a glaring exception again. There are the nicest pieces you will find.

Bottom line IMO. Many Mopar guys shy away from trying to make HP. Because they keep getting told it cant be done, or it cost to much, or its way cheaper to build a BBC. Some are scared of the RPM it might take to get there. Others don't want to or refuse to come around to more modern thinking on making HP. Or most the most likely reason is they are happy making 7-800 and running where they are. Nothing wrong with it.BUt its what keeps the Mopar stuff limited to what we have. I am on my third Predator build right now. Was it cheap HELL no. Could I build a BBC for less, yeah maybe 2500-3000 less. In the end it will make a bit over 1100hp and be a reliable bracket/.90 engine for me. Have a 582 aluminum BBC going together right next to it as well. And the costs difference is nominal and the Predator will make more power.