I had to do work on my cylinders with 4.3/8 bores
Not that the valve would hit the bore but the shrouding from the deck was pretty extreme.
A 4.500 bore would be great .
New Trickflow 295 heads
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Not that the valve would hit the bore but the shrouding from the deck was pretty extreme.
A 4.500 bore would be great .
Affordable and 8s would be fast enough.
I'd like to be building a short block around that 572 cube area. Tractor engine lol
I noticed the fine print for the dyno test stated that it ran with H/S 1.6:1 ratio rockers and .752 lift with 287/294@.050 I’m wondering if it’s setup for currently available offset rockers. That alone is a huge price point if it only requires something this side of Jesel, Manton, or T&D.
That's good new
Lets put a pair on a 361.
junior636
Well-Known Member
They use the same rocker set up as the 240s and 270s. Everything swaps over.
Awesome
And once again, the Chrysler guys take in the pooper.
TF went and “found” 25cc’s and didnt use an offset rocker? And they had rockers made? And they used the stupid big shafts so you can’t get better than a 1.6 ratio? Maybe 1.65?
I don’t see that as a win. Why? Because pulling 25cc’s out of a port Thats already poorly shaped means the head will make more power, but it won’t make the power it should.
Just damn.
TF went and “found” 25cc’s and didnt use an offset rocker? And they had rockers made? And they used the stupid big shafts so you can’t get better than a 1.6 ratio? Maybe 1.65?
I don’t see that as a win. Why? Because pulling 25cc’s out of a port Thats already poorly shaped means the head will make more power, but it won’t make the power it should.
Just damn.
That's why I told MOPARMAGA not to slobber too much.
Lol, I can't afford em anyways.
Next build is b1 stuff or predator, assuming my wife gets a job before she is too old to work
But most guys can make all the power they want with this set .
Just imagine being a Edelbrock fan and you got 230cc castings coming out lol... G hey
Sadly thats true. Chrysler guys are happy with a big block making 700 hp.
I had my first set of 1000 hp B1 heads in 2005. On one 4. And after looking at the tune up and dyno numbers it was easily 30 hp down. IIRC it made 1035 hp.
Thats TWENTY YEARS AGO.
572 inches, a tunnel ram and 20 years should easily get 1185-1200 hp. But when 700 is good enough Thats what the aftermarket gives you.
PRH
Well-Known Member
If most of the buying public wanted B1 type heads, they would have been hugely popular.
They have been on the market for 35 years…….yet are still somewhat rare at the local drag strips.
TF isn’t interested in producing heads that have great potential, and don’t sell very well.
It wouldn’t surprise me if these new TF295’s sell more units in a month that B1’s ever did in their best year.
They have been on the market for 35 years…….yet are still somewhat rare at the local drag strips.
TF isn’t interested in producing heads that have great potential, and don’t sell very well.
It wouldn’t surprise me if these new TF295’s sell more units in a month that B1’s ever did in their best year.
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Part of the issue is the lack of affordable aftermarket blocks, hopefully that's about to change.
The one thing I think that Chrysler has going against it for serious aftermarket support is most dudes are trying to restore their stuff to stock and Mopar cars are fairly expensive to go chopping up and making race cars.
I don't think I could afford to buy another a body with the prices being what they are and the scarcity of them in this State.
junior636
Well-Known Member
Yeah everyone says these blocks won’t hold power. I haven’t seen one broke but that’s what everyone says…. So if I want to take my 240s off and get these, I’m looking at $3600, then a new cam $500-$1000, new intake $500, new carb $1300. So I’m already at $6000-$7000 and at that point I need entire new short block with an aftermarket block. Buy the good stuff, there’s another $10k. More than the average guy with a family can afford. I’d build a gen 3 hemi with turbos for that kind of money and make more power.
There's plenty of 700 HP big blocks out there with years of service, but I don't think they will last forever
Maybe if a person already has a pile of good parts. If a person is starting with no good parts then a B1 engine is going to require at least $20,000 if not more. I just built a stock block Ford 521 that made 880 hp and it cost a little over $20K. The big Ford block will handle 900 hp but Mopar blocks won't. So that means a 900 hp Mopar costs extra since you have to buy an expensive aftermarket block.
To make it worse, Mopar blocks are more expensive than other blocks. A Ford SVO big bore 460 block is $3300 at Summit, but a Mopar big bore block is more than $6000. We'll see if 440Source is able to successfully bring a lower cost block to market. Ford has done it, and Dart has some decent prices on GM blocks, but the Mopar stuff is expensive right now.
I get it. But if the blocks were 3500 I doubt they’d sell many any way.
I’ve seen enough of them broke to know at 700 go you are on thin ice.
And the ring seal is straight ****. The head gaskets move all over hell. And the main bearings will look like trash because the block is bending like Gumby.
I hope that ice isn't too thin, we'll be finding out soon enough
We will soon see
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