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Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882256 01/31/21 12:57 AM 01/31/21 12:57 AM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	Originally Posted by Transman Originally Posted by mopacltd I have had one of these manifolds for over 40 years. Used it on an A/SM hemi Cuda and now on a 426 Hemi powered Model A. At the 2014 Mopars at the Strip, when Tom Hoover and the Ramchargers autographed the dash. Tom Hoover said he never could get that manifold to work the way he wanted. Oh, and by the way, it will be for sale when I install the stack injection back on the Hemi. Tom was a perfectionist. He was never happy with the cross ram wedge, and the Weiand Tunnel SixPack either. He definitely had his hand in on that Wieand manifold. There was even a fiberglass intake to compare it to Development Last edited by autoxcuda; 01/31/21 01:16 AM.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: autoxcuda] #2882284 01/31/21 08:05 AM 01/31/21 08:05 AM
Joined: Mar 2006 Posts: 9,827 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,827 MI, usa	Its been interesting to see the development of the cross ram runners through the years. Regardless of carb placement it allows longer runners with a lower hood profile. Though the design is close to 25 years old now the Indy 440-25 is the most modern of the wedge cross ram manifolds. There have been had several ideas to make them better. The first is pictured here. To be honest I dont think anybody is running this mod anymore. The second mod has been to run a vertical plate front to rear placed between the intake runners at the base of the runner entrances. Ive seen a third mod where the angled runner entrance center dividers were milled back to vertical. Not sure any are really any better. Though some have gone quicker with the mods, some not. Mine is still box stock. Doug

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: dvw] #2882317 01/31/21 10:53 AM 01/31/21 10:53 AM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	X Last edited by Transman; 02/09/21 09:47 AM.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882341 01/31/21 12:00 PM 01/31/21 12:00 PM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	Originally Posted by Transman Autocuda - the date on the Tech write up from Tom was dated 6/74. At that point in time Tom wasn’t happy with the manifold and as you can see was still working on it. I was still running Super Stock with my car and at Indy that year had the fastest car in its class using the STR. To the contrary - never had any issues launching the car. A friend of mine was using the Weiand and he was a solid tenth behind me. Bantering back and forth at a Milan test day - the explanation that was given was the Bauman carbs made the car fast and clean. From my recollection they developed the Weiand further at Spehar’s and Rossi was one of the first guys to get the cals for the carbs and the mods for the manifold. I left SS at the end of 74. Side note - the pics of the Indy manifold Doug posts - looks a lot like an STR derivative. Is Spehar’s place called SVI ? I sorta assume. But don’t want to do that. The picture I posted seems like they tested plenum box sizes. The small one would almost effectively be a tunnel ram? Maybe baseline for the test? BTW, that picture is not part of that memo nor the one below. Just shown for example. Looks like they were getting the ball rolling serious with Weiand 7 days later. Last edited by autoxcuda; 01/31/21 12:24 PM.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: autoxcuda] #2882366 01/31/21 01:05 PM 01/31/21 01:05 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	Yes, Ted Spehar’s business was called SVI.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882367 01/31/21 01:16 PM 01/31/21 01:16 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	A period correct STR.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882398 01/31/21 02:20 PM 01/31/21 02:20 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	And this is how some are modifying the Indy.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882410 01/31/21 02:46 PM 01/31/21 02:46 PM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	Lou asked me for the dyno sheets with the cam comparison. I think these are them... they are attachments to the memo above. Lou, please verify Memo Dyno sheet 1 Dyno sheet 2 Dyno Sheet 3

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: autoxcuda] #2882412 01/31/21 02:49 PM 01/31/21 02:49 PM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	I see the Lou Mancini connection... mentioned right here in this memo...

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: autoxcuda] #2882423 01/31/21 03:15 PM 01/31/21 03:15 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	x Last edited by Transman; 02/09/21 09:49 AM.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882426 01/31/21 03:19 PM 01/31/21 03:19 PM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	Originally Posted by Transman Autocuda - Ron was using the CD cam, me the GK. Comparing cars, the GK made more power. The dyno runs you show, while interesting are not the one I remember. The one I mentioned to you Show the GK R-276 vs. the CD R-286. The GK was better. For some reason GK never got their due with Chrysler. Ok.... I’ll dive back in....

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882437 01/31/21 03:31 PM 01/31/21 03:31 PM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	Clearly, volume is exactly the same. Thanks for clearing that up. Boffin Emeritus

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882770 02/01/21 02:33 PM 02/01/21 02:33 PM
Joined: Sep 2003 Posts: 19,366 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,366 north of coder	Originally Posted by Transman And this is how some are modifying the Indy. as poly said : "that's a HUGE reduction in plenum volume. why ?" my question as well.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: moparx] #2882772 02/01/21 02:38 PM 02/01/21 02:38 PM
Joined: Jan 2004 Posts: 8,241 fredericksburg,va C cudaman1969 master
cudaman1969 master C Joined: Jan 2004 Posts: 8,241 fredericksburg,va	After reading these post can you imagine where Chrysler would of been, then and now, without those guys expertise?

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882774 02/01/21 02:47 PM 02/01/21 02:47 PM
Joined: Dec 2005 Posts: 1,495 Shelby mi. J JAKE68 pro stock
JAKE68 pro stock J Joined: Dec 2005 Posts: 1,495 Shelby mi.	transman , i have seen this mod done to a few but never have heard of any results. I would think you would have to run the motor up higher??? JAKES AUTOMOTIVE

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: JAKE68] #2882789 02/01/21 03:19 PM 02/01/21 03:19 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	X Last edited by Transman; 02/09/21 09:50 AM.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: A727Tflite] #2882803 02/01/21 03:42 PM 02/01/21 03:42 PM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	I thought I saw something, but I was wrong. Boffin Emeritus

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: polyspheric] #2882818 02/01/21 04:32 PM 02/01/21 04:32 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	x Last edited by Transman; 02/09/21 09:52 AM.

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: cudaman1969] #2882835 02/01/21 05:16 PM 02/01/21 05:16 PM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	Originally Posted by cudaman1969 After reading these post can you imagine where Chrysler would of been, then and now, without those guys expertise? Chrysler had a handful of outside contract development people/companies during the 70’s. Mostly the same group with a few changes I can see from ‘71-‘79 IIRC, that contract deal died in early 80’s and went in house. Hoover left in 1979 (I have his brief announcement to the contractors). SVI (Ted Sphear) Don Carlton Keith Black Bob Tarozzi (Later Phoenix) Mullen & Co (Bob Mullen) Example... 1974 Engineering & Development Liaison List

Re: Hemi Bathtub Single 4 Intakes - Anybody tried one? [Re: autoxcuda] #2882842 02/01/21 05:29 PM 02/01/21 05:29 PM
Joined: Mar 2011 Posts: 3,069 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,069 Michigan	X Last edited by Transman; 02/09/21 09:54 AM.

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