Adds 0.75 HP, haven't you heard?I like the upside down valvecover
Ebay GT45 + 5.9 Magnum + E85 blow thru
- Thread starter subcom
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Walker434
Well-Known Member
Anxious to see the difference that single plane makes under boost. I just got my M1 single plane for my build. Debating pulling my heads since I have the intake off and adding head studs and a thicker cometic head gasket. Plan on running 10 lbs of boost through the Procharger
I wish I had measured the intake port size on the EQs before gasket matching the intake. The intake ports are now slightly bigger than the ports on the heads. Under boost I don't think it will matter much though since everything should get pretty mixed up and forced into the heads. The M1 is supposed to be a really good intake. You should be fine.
dusted
Well-Known Member
Don't think you need head studs. Stock head bolt is 1/2inch. I agree on the cometics though since you already have it apart. Are you running an LA or magnum block? I'm having a hard time finding a magnum M1 for my truck engine build, the duster already has one.
dusted
Well-Known Member
I have the same intake on the truck build and the stock 318 head ports are tiny compared to the intake. Boost will find a way.. I was amazed at how good the throttle response was also, very crisp!
Walker434
Well-Known Member
I'm running a magnum 5.9 with EQ heads. Glad you don't think head studs are necessary because ARP told me over the phone today that they don't make them for magnum heads.
This M1 was really hard to find. I ended up trading my air gap to a member on here for it.
Matts440
Well-Known Member
Actually they do according to their catalog, it's labeled as w5-w7 heads part numbers;
144-4003 hex head
144-4203 12 pt
144-4003 hex head
144-4203 12 pt
Matts440
Well-Known Member
Nice where did you find that socket? I have the 12pt for my magnum head build, like the look of them better.
Bobzilla
Well-Known Member
I'm curious; why are you guys all looking for M1 single plane intakes? Are you running Magnum intake bolt pattern? Do you need fuel injector bungs in the ports or are you running carbs or throttle body systems?
Subcom is running LA intake bolt pattern, so he has more intake options available.
Really enjoying your updates subcom. This thread is one of my favorites. Love the car and budget turbo setup.
Subcom is running LA intake bolt pattern, so he has more intake options available.
Really enjoying your updates subcom. This thread is one of my favorites. Love the car and budget turbo setup.
I was able to find it here at a store called performance tool. I think the socket is a grey pneumatic socket. I was lucky cause they sold me only one socket out of the set.
Matts440
Well-Known Member
Sweet will have to see if they can do it again
dusted
Well-Known Member
I have a magnum 318 based stoker in the duster, it has a M1 with injection ports, but I’m running a blowthru carb for now. I wanted one for my 360 magnum engine build for the truck. Turbo’s like a single plane. It’s hard to find a single plane for a magnum head that is a bolt on. I’m sure I could mod an LA one to work, and I may have to. I found some on ebay for 600-1000$.
Matts440
Well-Known Member
I went the opposite direction, just had the magnum heads redrilled for la intakes and can use any of them, just need to seal the end bolts due to the direction of the bolts.
dusted
Well-Known Member
I think Hughes offers a service to drill the La intake to magnum head.
Matts440
Well-Known Member
Think your right, you can do either way, they offer it for the heads as well, I had Michael at B3racing engines do mine while he ported them to my application.
Bobzilla
Well-Known Member
Drilling and tapping existing heads for the LA pattern is the way to go to open up manifold selection options. If you're very careful and seal off the valley area with lots of shop towels you can drill them on an assembled engine too.
With the cost and availability these days of the M1 with injection bosses, you'd be saving money by drilling the heads and using one of the LA intakes even if you have to add bosses to a non-injection intake like the Victor 340 subcom is running. This leaves the M1 available for trucks, although most trucks can just use the Hughes air gap.
There is also a single plane with injection bosses cast in and Magnum vertical mounting bolts available from Indy cylinder head. I think it's 360-M. Only problem there is the plenum is really tall so you have a little extra into having that machined off.
With the cost and availability these days of the M1 with injection bosses, you'd be saving money by drilling the heads and using one of the LA intakes even if you have to add bosses to a non-injection intake like the Victor 340 subcom is running. This leaves the M1 available for trucks, although most trucks can just use the Hughes air gap.
There is also a single plane with injection bosses cast in and Magnum vertical mounting bolts available from Indy cylinder head. I think it's 360-M. Only problem there is the plenum is really tall so you have a little extra into having that machined off.
Got some seat time in the car with the Victor 340 on it. Runs beautifully! I was concerned about street manners but it seems to be even smoother than the AirGap. Idles great, off idle is crisp, WOT feels strong. Took it up to about 8psi and it felt great. Didn't have to touch anything on the Fitech. Happy camper.
Subcom, are you using timing control on the Fitech or just using it for fuel?
Fuel and timing.
mopar65
Well-Known Member
dusted
Well-Known Member
That’s a nice piece!!
dusted
Well-Known Member
What do you do about the bypass hose for the water pump? Use one of the side ports?
Matts440
Well-Known Member
It has the spot you just need to drill it out for it, if you were to use the by pass hose
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