P4529724 intale B block any good

Can anyone tell what the dimensions are on this intake? Need to know the pad height. I think Andy said it was a good intake out of the box. Any opinions on it?

From one of Andy’s tests, on your favorite BB combo:



I believe prior to that they had seen 700hp using the TF intake and a 4150 carb.

ok, couldn't remember. That is the only other intake I see available with the Dominator flange for B block. The TF would be my #1 pick, but it wont fit under my hood with adaptor and Andy said it lost 18hp with the 4150/4500 adaptor on it. guess i could put my 950 on it, but seems like that would be going backwards.
A Wilson ported M1 with standard ports worked better with my 270 heads than an OOTB Indy 400-2 intake. Once the 400-2 was ported then it worked better. The Indy 400-2 out of the box was a pig. Once it was reworked by Wilson it ran pretty well. Your results may vary. I was working with a fairly well sorted out combo. That was a pump gas 470 that was making over 750 hp. I think the best set of pulls was 780 hp. Most guys don't spend the time and money to dial in a combination like that. If you knock 100 hp off the engine then the OOTB intake probably works just fine.

The 4500 M1 intake worked pretty well with the 270 heads on my 470. The Wilson prepped Indy 400-3 worked better, but the Wilson prepped M1 4500 with standard ports worked really well. This was on the dyno. Going down the track the std port M1 might have been faster. I never tested in a car but it wouldn't surprise me. You should've bought these intakes from me when I sold them. I sold them for about half of what it will cost you to have Wilson port your intake.

The plenum looks quite large on the 4500 m1. I think I can buy that M1 4500 brand new for $225.

I didn’t think they’d been available for a few years, but there might be a few kicking around somewhere.

Just keep in mind the one Andy used to get good results with was the $1600 variety.

And then...... the $1600 job on the 400-3 was better than the $1600 M1........ so I’m not sure how this is a step toward.

But....... the interesting test would be to try the M1 without the $1600 job, and see how it compares with what you have.
(It’s not what I would do...... but I’d still think the results were interesting)

Look closely at the picture of the Wilson ported M1 4500 and you'll see that the logo says Mopa. Wilson added a lot of material to the outside of the runners so they could port the inside of the runners. The outside of the runners in that picture is not stock cast aluminum. It is welded aluminum that has been blasted to look like it was cast. There is a lot going on with that intake that you can't see unless you look closely.

Once you spend a ton of money on that intake it works fantastic. I'm not sure where that intake is these days. I think I sold it to someone here on Moparts for pennies on the dollar. Hopefully they're enjoying it.

Andy, didn’t you have a pic of the stock one and the modified one next to each other?

The vendor who I thought still had the B-block version in stock shows 0 units now. They do show 2 of the RB version on hand, presuming they keep their web site up to date.

Don't know how the RB version w/ Andy's 4150/4500 shear plate adapter (I think I bought his last one) would compare to my RB Trick Flow 4150. I have experience only w/ modified RB 4150 M1 intakes, which make good torque but don't make the peak HP of something like a Victor 4150 or Trick Flow 4150.

The big advantage of the M1s are their low height compared to the Victor/Trick Flow style intake. Figure as much as an inch lower at the carb mounting pad, IIRC, although the M1s are angled w/ the carb lower at the front of the intake.

EDIT: I looked closely at the "before" and "after" pics of Andy's B-block intake that got Wilson-ized. The more I looked, the more I saw where they'd welded material to allow the runners to be opened up from the plenum to about half way down to the head. A sh!tload of work went into that thing...

The big advantage of the M1s are their low height compared to the Victor/Trick Flow style intake. Figure about an inch lower at the carb mounting pad, IIRC

I had a large plenum M1 4500 with a dominator on my 493 and I couldn't close the hood with an air cleaner on it, With a Victor and a 4150 I can use a 3" drop base air filter so I believe the Victor might be lower

Gus

I think so but I'll have to wait until later. Heading to the state championship game at the moment to watch my daughter play.

Std vs MW:

Well, the going forward part to me, would be the standard ports vs my huge ports in the 400-3. The m1 still has that huge plenum thou. If you remember, Wilsons wanted to make my ports smaller and longer.

Not sure what difference in carb mounting flange height there is between the M1 4150 and 4500 intakes. The M1s still look lower to me than a Victor, and definitely lower than an Indy.

IIRC some 4500 carbs are taller than 4150s, and there can be differences in available drops for air cleaners that fit one or the other. More than one variable to take into account...

Yeah, Brad, Wilsons cuts them apart to do their handy work. That's why it costs so much. A lot of work.

My thought was to just bolt the standard port up and run it as is, then port match the roof of the ports only and try again. If my ports are too big, then I want to go drastic small and see what it does. Dwayne, have you ever tested any thing like that on the dyno?

A little more of an issue on the other side with this particular manifold.....

I’ve never tested a std port intake on MW heads.

I know its weird, but i'm willing to try things that shouldn't work. Who knows.

Even if it’s not something I’d do myself....... I still to like see what other people try, and how it works out for them.

If a particular engine build plan calls for MW heads, then I’m going to use a MW manifold with them.

If I thought the engine could get by with the std port csa....... I’d use the smaller heads along with the smaller manifold.

About the only time I would do the small intake/big head thing is if I were using a head with the std opening/MW sized port..... like an SR or EZ....... where the port opening is std port size, but once you get into the port 1/2” or so, it opens up to MW size.
I would normally use this configuration with “smaller” ci builds, or milder stroker builds for heavier vehicles where the race type MW single plane intake isn’t a good match for how the car will be used.

Nowadays, it’s basically the same sort of decision for someone deciding on whether or not to use TF 240’s or 270’s.

I understand. Andy did say the M1 4500 worked pretty good out of the box on the TF270's, but obviously the Wilson worked M1 was better and the Wilson worked Indy was better yet or best. I'm really temped to get the M1 4500 and try it. I don't have many options for 4500 B block intakes. If the TF intake was a 4500 it would be a no brainer.

He’ll correct me if I’m wrong, it I’m pretty sure the ootb M1 single plane didn’t get tested on the 270’s.

The 4500 M1 intake worked pretty well with the 270 heads on my 470. The Wilson prepped Indy 400-3 worked better, but the Wilson prepped M1 4500 with standard ports worked really well. This was on the dyno. Going down the track the std port M1 might have been faster. I never tested in a car but it wouldn't surprise me. You should've bought these intakes from me when I sold them. I sold them for about half of what it will cost you to have Wilson port your intake.
The way I understand this was the ootb M1 was good, but the Indy prepped was better with the M1 prepped being the best. The indy ootb was not good.

I was reading through the thread from two years ago where he first tested the 270 heads.
The was no mention at the time, in that thread of the std M1 going on the 270 heads.

Doesn’t mean it didn’t get tried, but no mention of it in a 10 page thread.

If you read through all the articles he did with both the 240 and 270 heads...... the M1 gets sent out for porting while he’s still doing testing with the 240 heads...... and I dont see any mention of an unported M1 after that.

On the first 470 with 240 heads, the porting on the M1 was worth nearly 30hp.

ok, maybe i'm reading it wrong. Only Andy knows. I just ordered an M1 4500 P4529724. Will see if it shows up.

Who had one?

Monicatti. $214

Hopefully they actually have it.

yeah will see. I should get an email by Monday.