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#2462622 - 03/07/18 12:58 PM 360 hot street eng. Weiand TR vs Indy Modman dual quad.
2boltmain Offline
master

Registered: 07/26/03
Posts: 3550
Loc: MI Allegan county
Acquiring parts for 2019 build. First off Im fully aware a single carb on an air gap RPM is better better better and cheaper for the street. Im a fan of multi carbs and have two new Edelbrock 500cfm carbs. My project: 360 with KB 107 pistons, ported J heads 2.02 1.6 valves. Dougs 1.5/8" full length headers. Hyd roller cam .235-.240 dur @.050. 727 full manual,3500 stall 3:91 SG.1971 Demon. I have a new Offenhauser dual quad but decided this 273 manifold will give up too much and thus I will sell it off. Would like the set up to fit under the hood but am willing to cut hood for the tunnel ram. Ive searched moparts and A bodies only forum and the Modman dual 4 configuration sounds wrong for my app as my engine may be much too small and mild. But I wanted a recent take from members in the know. My goal is a car I will have fun in and honestly will never take to the strip (But high 12s in the 1/4 capability.) Park it in my house and hug it (Im single)

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#2462627 - 03/07/18 01:09 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
moparborn Offline
super stock

Registered: 07/05/07
Posts: 708
Loc: Pa. U.S.A.
I have ran weiand tunnel Rams in the past and I am currently using one now ,I am very pleased with them and they worked great for me.
I will be using one on my next build too.


Edited by moparborn (03/07/18 01:10 PM)

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#2462782 - 03/07/18 05:55 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
2boltmain Offline
master

Registered: 07/26/03
Posts: 3550
Loc: MI Allegan county
Thanks moparborn. Im pretty sure a Weiand is in my future. My obsession is the dual quad cars of the late 50s early 60s-383s 413s hemis from all eras, Olds and Buicks- 409s with dual quads. So cool that it was available from the factory. Im disappointed Edelbrock will not make a dual four manifold for the LA. The unit they made 40 years ago was for the 273. Im checking ebay moparts and A Bodies often for a used 340/360 tunnel ram.

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#2462983 - 03/08/18 03:50 AM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
Guitar Jones Offline
master

Registered: 12/18/09
Posts: 9867
Loc: in a cattle trailer down by th...
The mod man intake looks cool but with its shorter runners it would appear to be a high RPM manifold. I thought about using one on my W5 408 but the M1 TR that's on it works just fine.

I sold a Weiand 340/360 TR awhile back to a member here or on FABO, I don't remember.
_________________________
The Scamp is sold, now just two old trucks.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc conversion. Hydroboost coming soon
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.

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#2463082 - 03/08/18 10:43 AM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: Guitar Jones]
dogdays Offline
I Live Here

Registered: 01/20/03
Posts: 16221
I had to go to Indy's site to see there is a Mod Man for smallblocks.

I haven't seen effusive praise for the Mod Man for the other engine families. Frankly it's far easier to find anger because the intake doesn't work well. Based on what I have found I would shy away from it. For one thing it has huge internal volume. So, feeding a 650hp monster motor it may work just fine. But for anything remotely resembling street use IMHO forget it.

On the other hand an old tunnel ram can work quite well. Look for an old fashioned one that doesn't have sewer pipe sized runners. 9 out of 10 people will tell you it won't work, but they are mistaken. Because of the ram effect it should improve torque all over the rpm range.

R.

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#2463186 - 03/08/18 02:22 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
2boltmain Offline
master

Registered: 07/26/03
Posts: 3550
Loc: MI Allegan county
Thanks for the input! The Modman looks like a cool with the dual Edelbrocks but Im not finding any glowing reviews- or rather glowing reviews on mild engines. Id really like an Edelbrock Street tunnel ram- they made them briefly in the early 90s. Now they are scarce and $$$$$. A new Weiand is $490. Every place has the same price- $490. Ill keep looking for a used one. Dont need it ASAP so if I dont find a used one Ill get a new one.

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#2463534 - 03/08/18 11:11 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
Rob C Offline
super stock

Registered: 03/04/05
Posts: 752
Loc: Earth
Keep looking for the Edelbrock TR5 & use the TR1 top for the smaller plenum and better street response. They mount 2 Holleys sideways. The runners are reasonably long and narrow. Excellent for torque.

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#2464255 - 03/10/18 09:59 AM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
2boltmain Offline
master

Registered: 07/26/03
Posts: 3550
Loc: MI Allegan county
A member reached out and I now have a new old unused Edelbrock Street tunnel Ram on the way. I also have 2 new Edelbrock 500 carbs on the way. Very cool. Ive been paying Child support on time, never fell behind and not complaining since 2002 and that commitment will be done this May 20th. That coupled with my purchase of a very modest small home (and overtime) have put in a position to where I have $$ to spend on my toy. (71 Demon with a 1971 360). With a little pain I decided I dot want to risk running a flat tappet cam. You know-the failures even with proper blend oil. So Im thinking Hughes for a hyd roller cam lifters springs retainers (235-240 dur @ .050.) I like Mancinis house brand iron adjustable rocker arms. I already have .030 over KB107 hypereutectic pistons I purchased brand new second hand in 2003. My heads are J heads with punched out 2.02 intake and common sense ported and polished by me (not hogged out.) Headers are Dougs 453 with 1 5/8 primaries. A friend gave me his perfect functioning TCI super street fighter converter a decade ago (yes TCI is not well recommended but I verified it worked well on the street in his car and it was free!) Trans is good to go 727 with full man reverse VB and deep pan. Rear is an 8 3/4 sure grip with 3.91s and Yukon axles. OEM discs front-drum rear. I think that covers it. 28" tall rear tires. Car will honestly never make it to the strip but Id want it capable of easy 12s with traction IF I raced it.

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#2464302 - 03/10/18 12:14 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
Rob C Offline
super stock

Registered: 03/04/05
Posts: 752
Loc: Earth
Awesome! Glad to hear of this.

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#2464320 - 03/10/18 12:44 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
EV2Bird Online   penguin-006
No more politics

Registered: 06/23/14
Posts: 4209
Loc: Kansas Roads Between 0 and 140...
This is mentioned on hughes site as well but if you have the block or are looking for a block to use the link bar hydros you got to make sure the tops of the lifter bores do not have the big chamfer? on them, some are a much a 1/8 .125 and will uncover the lifter oiling band.

If you get the huhges cam they cut a lower base circle and not cam grinders do.

I did just read you have a early block which is a plus.

I dont think its year specific but here has to be a pattern on why or what blocks got the big chamfer on top of the lifter bores but my mid 70-s blocks are no gos but I bought a pallet of no vin replacement blocks 25 years ago that were all very early 360 blocks and they all would accept the lifters.

I dont know you altitude but on builds like you posted with the kb107 with a j head and the good old blue flepro gasket, if the block leaves them .010 below deck you might consider leaving that because if its a pump gas street driver you plan to drive alot a hair below deck wont hurt your performance but zero deck can still sometimes ping with the ever worseoning pump gas.

Not sure what your expectations are on power output but its a no brainer to get a 430-440hp and equal tq or better at the crank. I used to dyno builds like this but it got to the point they were cookie cutter and no reason to.

If you can do the little bit of minor bowl and port match you will get better returns from 1/2 a days worth of grinding the 2 days of guessing as the benifits vs time is not linear.

One other thing off the top of my head is the is no reason not to use a good quality 5/16 pushrod and your probably still going to have to clearance your pushrod holes just a hair so the wont rub but its easy to determine how much after you get the shortblock done and mock up a head/rockers and such.

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#2464354 - 03/10/18 02:15 PM Re: 360 hot street eng. Weiand TR vs Indy Modman dual quad. [Re: 2boltmain]
2boltmain Offline
master

Registered: 07/26/03
Posts: 3550
Loc: MI Allegan county
Thanks for the advice EV2. Build will take place over the 18/19 winter. I will not order certain parts until the engine is apart. Car has been in a storage facility since 2006. Getting a garage built on my property this year and the Demon will go in it and my fun will begin.

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