Anyone know if the flange is big enough on a trick flow or victor low deck intake to accept a 4500 carb if I fill the holes and re-tap it?

Just lay a 4500 gasket on it and run a sharpie around the inside of it and see how it looks.

Yeah, I don’t have one. Was hoping to find the answer before I ordered one up.

Can you run a 4150/4500 spacer or are you fighting hood clearance? Can you weld aluminum? Because...on the 383 Victor the bolt holes on the 4500 are very close to the edge of the casting. Besides that.....the 4150/4500 bolt holes overlap. Correction......there is sufficient sealing surface after opening the the mounting area to 4500 throttle bore size. It's just the bolt holes will be very close to the edge of the casting and may break out.

Ok, yeah hood clearance is an issue. I run a tm6 currently with a 2” adaptor. I wouldn’t mind trying a modern intake but i won’t have the room to run an adaptor.

I see, make sure you see the correction on my previous post.

Thanks Jim

Jim, didn’t you “do” one of the victors like that?
4150 to 4500?

I thought I saw you guys do something like that but I don’t recall if it was a BB or SB.

Find a M1 4500 intake instead. The M1 4500 will work better than a converted Trick Flow or Victor.

We did it to a 383 Victor. But we used a 4150/4500 4-into-1, 2" HVH spacer and opened the intake manifold carburetor mounting flange to very nearly 4500 throttle bore size and matched the 4150 side of the 2" spacer to the intake manifold. I keep holding on to it in hopes of someday running it on a standard port sized 400 based stroker. I sold the Indy Dominator single plane and the 2" spacer we used for 787 HP on the pump gas 451, so this 383 Victor is my next best bet.

Andy, I thought without major porting the M1 was poor?

One thing to keep in mind with the Victor or TF intake is, they don’t have the carb pad angle “corrected”.
So in a typical door car where the engine is tipped back.......with carb pad corrected the carb sits level.

With the uncorrected carb pad, the carb will be angled/tipped back..... parallel to the crankshaft.

This can impact how the air filter/hood clearance situation plays out.

In 1990, before there were any 4500 std port intakes available(if there were any, I wasn’t aware of them), I built one out of a Holley SD.

Nice looking work Dwayne, how well did it work?

The M1 isn't a great intake but the M1 4500 works really well. (If the engine needs it) Very few people have any experience with the M1 4500 since it just wasn't a very popular intake. It should be perfect for you application though since a Dominator carb will bolt on plus it is fairly low profile. The only challenge will be to find one.

The real question is what does your engine need. A Trick Flow intake with a 1050 size 4150 might make more power on your engine than a Dominator on a M1 4500. Nobody knows the answer until you test it since it depends on a complex relationship between engine size, camshaft design and cylinder flow. I did a lot of testing with my low deck 470 engine and eventually picked up about 100 hp over my first test results but I had to try multiple cams, intakes, carbs, etc. Nobody knew what the recipe was and much of the advice I got along the way was wrong.

Ok

I believe there was a LD M1 for the 4500 listed either on moparts or forbbodiesonly. I put one on my wagon and it worked real well. I plan on doing some minor blending and clean up and I'm sure it will be even better.

Here it is https://www.forbbodiesonly.com/moparforum/threads/m1-b-intake-and-scat-rods.189979/

Buy that low deck M1 4500 for $300, good deal in my opinion for that intake. You might even have room for a 1/2" or 1" spacer, and I think those will help too. A 1" tapered 4-hole spacer typically works well.

Back around 2003, I welded the inner runners of a low deck TM-6 to port out the notches, and that thing flowed great on the flow bench. Those notches suck... It was a 4150 intake, and I ran a 2" 4500 adapter.

I was thinking about welding the notches. The TM6 runs good with the dominator. I was just looking for a little more. I sent the guy a pm on the M1 yesterday.

Wilson makes a 1 inch 4500/4150 adapter if that would help with hood clearance

Maybe 17-18 years ago I had a pump gas 493 on the dyno with a roller cam and std port SR heads (mild porting by MM.....about 300cfm).

I tested a std M1 with a spacer and my good ported 850 annular, and a 1050/4500 on a 2” adapter, and then swapped the intake for a M1/4500 with no spacers.

I’d have to see if I could dig out the sheets, but my recollection is there wasn’t much difference in power between the 3 tests...... maybe like 7-10hp.

That motor was in the 660-670hp range.

There are some manifold tests in this old archived thread(along with a pic of the “Holley SD-4500” before I cut a bunch of extra “stuff” off it).
http://www.moparts.org/Tech/Archive/bb/8.html