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Join Date: Mar 2002
Location: easley, sc
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911 with all aluminum sbc434 ci engine

ive never said much about this conversion. it was done several years ago and time to take her apart and do a few improvements. it is a 71 911 coupe with rs flares and an all aluminum dart 434 cubic inch sbc engine and shortbell housing 930 gearbox. it has most of the improvment stuff such as big brakes, linday 17 inch by 9 rear wheels, big bars, etc. the engine is a full roller with mass flo efi and makes 550 horsepower and as much torque. i sold my ls7 powered 930 and now i am stuck with this....not as much hp but my favorite of the two. ill post a few pics along the way....

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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed
Old 09-04-2015, 01:25 PM
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What kind of overflow can is that on the left side of the engine bay? How is it plumbed in? Is it a commercial product or custom?

thanks
Fred Emmerich
Old 09-04-2015, 05:56 PM
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fred, the overflow/recovery tank is made by Canton Racing Products and is part number 80-201. i believe they make a couple of different sizes. i like the sight glass feature and it is very well made!
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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed

Last edited by lin7310948; 09-05-2015 at 03:48 AM..
Old 09-05-2015, 03:39 AM
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Are you selling this one too ?

DOHC
Old 09-05-2015, 09:05 PM
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Is the overflow tank plumbed in by that small line that comes out of the water neck? I assume the large radiator hose goes to the radiator in front. What size hose do you use, 1.25 or bigger. Also, do you a mechanical or electric water pump? Sorry for all the questions...
Old 09-06-2015, 04:45 AM
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the overflow/recovery tank is plumbed to the small line as you stated. the the larger water hose is 1.5 inches. i installed a mezziere 55 gpm electric water pump. i also have an oil cooler with an electric fan to help with cooling.no problem with the questions.
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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed
Old 09-06-2015, 05:25 AM
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I have a 914 with a SBC, and I also have the 55GPM pump and dual oil coolers in front. I am still not happy with the temps I see. A lot of people say it is air in the system causing the problem. I have a swirl pot off a Pantera, but I don't think it works except as a fill point. Does your can have some provision to return water to the system?

thanks
Fred Emmerich
Old 09-06-2015, 03:55 PM
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yes it is a recovery system. as the system cools and a vacuum is formed it pulls water back into the system....
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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed
Old 09-06-2015, 05:57 PM
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I like this one, too. Not as much as the black one since that car was so similar to mine. But this car is cool, too.

Which Transaxle do you have? I'm finding mine is a little short on gearing with the stock 915.

Hal
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http://forums.pelicanparts.com/porsche-911-technical-forum/649179-rsr-ls-conversion.html
Old 09-12-2015, 08:11 PM
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the car has a shortbell 930 gearbox. 2200 rpm is 70 mph in fourth gear.
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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed
Old 09-13-2015, 03:47 AM
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That's a little better. I'm at 2800 rpm at 70mph in 5th. 1st is a stump puller. Feels like 4wd low on my jeep used to. Lol. I looked at the 10:31 ring gear. That would put me about where you are. Seems like the car has enough power to do 70mph at 1200rpm though. Not sure how to get there...
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Old 09-13-2015, 05:56 AM
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i just got my 930 gearbox back from protech motorsports. ready to start reinstalling engine and transaxle after a few other projects on the car. i recently bought an austin healey with a sbc motor and transmission and have been working on it. i made a dash to st louis to pick up a set of aluminum fenders to replace the rather outlandish ones currently on the car.
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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed
Old 11-27-2015, 04:56 AM
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Garage
Nice!
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1989 911 LS1
Old 11-27-2015, 04:54 PM
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well it has been a while since I last posted about my 71 911 conversion. I got side-tracked on Austin healey conversions for the past couple of years. I sold one of the healey conversions and am driving the second one. so now to get back to the 911. I got the motor and rebuilt transaxle in place. half shafts connected and working on some lesser items. I hope to have the car ready to start in a month or so.
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71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed
Old 07-11-2017, 09:47 AM
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Awesome. any chance of posting up some pics of the radiator set up and the way you mounted the motor. Im still undecided which way i want to go
Old 07-11-2017, 05:12 PM
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