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| 4-71 slant 6 https://www.slantsix.org/forum/viewtopic.php?t=24293 |
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| Author: | Dorian [ Tue Jul 31, 2007 10:08 pm ] |
| Post subject: | 4-71 slant 6 |
Can anyone direct me to the post about the guy who put a 4-71 on a slant six? I have the pic I got from it originally but I can't remember where I got it from. I do remember it was installed off the intake manifold at a 45 degree angle and then the 2 barrel carb at another 45 degrees. He also went through some dyno tests and was still in the process of dynoing. He said it took him 2 yrs to build it and that he would update us on the next dyno session. Thanks, Gary[img][img]http://i95.photobucket.com/albums/l123/DorianNightwolf/BlownSlantsix.jpg[/img] Here is the picture of the blown Slant 6, hope this jars a few memories. Gary[/img] |
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| Author: | terrylittlejohn [ Thu Aug 02, 2007 4:47 pm ] |
| Post subject: | 4-71 blower |
your looking for Dave Evans, the engine dyno at 319hp at 5500rpms/ 340 lbs torque at 4250rpms.he put the engine in a 67 barracuda,i know he had trouble with the idler bracket while on the dyno and the operator told him he was under carbed,never heard anything after that 
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| Author: | slantzilla [ Thu Aug 02, 2007 5:20 pm ] |
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I know Mr. Evans had dyno'd the motor at 425 horse on alky, but it had been removed from the car and disassembled because he knocked the rod bearings out of it trying to run pump gas. Last time the motor was seen it was sitting in his plant rusting away from the chemicals he uses. His business was reclaiming gold and other precious metals from electronic devices. |
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| Author: | terrylittlejohn [ Thu Aug 02, 2007 6:08 pm ] |
| Post subject: | 4-71 |
the only info i have is from an old news letter that seymour had sent me 
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| Author: | slantzilla [ Thu Aug 02, 2007 8:42 pm ] |
| Post subject: | Re: 4-71 |
Quote: the only info i have is from an old news letter that seymour had sent me
Seymour lived close to Dave and kept me well informed on what Dave was doing. At one time he had a dual-fuel system on the car so he could run alky and pump gas. Had 2 gas pedals in the car and everything.
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| Author: | Dorian [ Thu Aug 02, 2007 9:45 pm ] |
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I did a search for any posts by Dave Evans and found nothing in the forums. Does anyone have a contact that I can use to get a hold of him to pick his brains about the build? Thanks for all your responses I appreciate it. Gary |
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| Author: | slantzilla [ Thu Aug 02, 2007 10:27 pm ] |
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Quote: I did a search for any posts by Dave Evans and found nothing in the forums. Does anyone have a contact that I can use to get a hold of him to pick his brains about the build?
I don't think Dave was ever on the board. Seymour Pedersen would be the one who could help you out. Call before 10pm CST. 952/929-0508Thanks for all your responses I appreciate it. Gary The motor itself was nothing special. The core was the intake/drive/brackets which were all fabricated. I attempted to buy those pieces a long time ago and they were not for sale. Dave was going through a tough time then though. They may be for sale now. |
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| Author: | Dorian [ Thu Aug 02, 2007 11:28 pm ] |
| Post subject: | |
I can see from the picture that there is a lot of fabrication, which I should be able to duplicate, I was wondering what type of intake did he start out with before he modified it, or do you have a better suggestion on what intake to start out with. I could probably fab one up from scratch but I think it would be easier and quicker to start from an intake manifold. Thanks, Gary |
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| Author: | Joshie225 [ Thu Aug 02, 2007 11:46 pm ] |
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Personally I would use a more modern blower like an Eaton M90 or M112. Or better yet a Whipple crew compressor. The Eaton and Whipple blowers are more efficient than the ancient 4-71. They put less heat into the intake charge so you can either run more boost, higher compression or lower octane fuel. If you went EFI you could also run an intercooler and again up the boost, up the compression or run lower octane fuel. The compressor on a turbocharger is more efficient yet. |
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| Author: | greasy 225 [ Fri Aug 03, 2007 10:49 am ] |
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I thought one of those Roots blowers off a Buick 3.8 would fit really nice on the side of the Slant and have good hood/fenderwell clearance. The main problem I see with this is the rear induction, the throttle body was on the rear, but I was thinkin a sidedraft Weber or Dellorto. Firewall clearance would be quite tight. -Jesse |
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| Author: | slantvaliant [ Fri Aug 03, 2007 10:58 am ] |
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Quote: Personally I would use a more modern blower like an Eaton M90 or M112.
BIG RED uses the M90 and EFI. He had to do some interesting fabrication to make it all work. Nice!
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| Author: | Dorian [ Sat Aug 04, 2007 7:02 am ] |
| Post subject: | |
http://www.225.ca/tech/s6rn04.htm found it, thanks guys for all your help! |
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