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post #1 of 5 (permalink) Old 03-25-04, 09:13 PM Thread Starter
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429 blower Q?'s

Hello all ,
I'm new to this forum and rather naive to this specific topic so go easy.
OK, the story is, I'm putting a 429 into an XB hardtop(complete groundup rebuild of the whole deal), and a friend has told me he has a contact in Japan that may be able to get me a supercharger to suit this engine real cheap. Over there they only keep their vehicles for around 5000-6000 klms because they're so cheap, so said blower will be second-hand, but in reasonable knick(hopefully!?!). Ive chosen the 429 over the 460 simply because it is a little more unique in Australia and it has a slightly better rev range.
I'm going to invest in the Edelbrock Performer RPM heads(CJ ports), which come in two sizes, 75cc and 95cc chambers. As I understand a low compression ratio is appropriate for supercharging, so the 95cc heads would be the obvious choice. But if I decide not to use the supercharger then I am left with a really expensive set of heads and low compression . Can you open up the chambers on the 75cc heads easily if I do use the S/C. What do you reckon folks?

What is the prefered system for this application(centrifugal, screwtype....)? The car is mainly going to be a show peice, but it will be registered and it will be driven to shows and local strips.

If the blower type that I use requires that I have to cut open the bonnet then does anyone know what the legalities are for equipment (say a bloody big bird catcher) sticking out of the bonnet in NSW? I,ve heard lots of different ideas on the rules but no definites.

Cheers people, I look forward to any comments.
I'm going up the pub while you all come up with some answers

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post #2 of 5 (permalink) Old 03-26-04, 05:05 AM
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Re: 429 blower Q?'s

75 cc can be opened up to 95cc but would be very time consuming = $$$
If you don't want to use the supercharger, domed pistons and head shaving can be used to bring the compression ratio up to an acceptable level.

Those heads would be an excellent choice for a street driven car.

Regarding choice of blower type you can't beat the look of a polished rootes blower sitting on top but then officer plod will take a keener interest in your ride. Can't have everything!

BTW, if you haven't purchased an engine yet, go for the bigger 460, it's free horsepower. Just my opinion.
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post #3 of 5 (permalink) Old 03-28-04, 03:59 AM
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Re: 429 blower Q?'s

if you want to be different and make big power throw a turbo on it or to for that fact i rekon 6-8psi would make 600rwhp and ^^^torque

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post #4 of 5 (permalink) Old 03-31-04, 09:34 AM
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Re: 429 blower Q?'s

The only stock production superchargers to come out of japan were ones like the
1GGZE supra and 4AGZE toyota levin superchargers the same as Castlemaine Rod Shop use in their kits they cost about $350 each and are maxxed out on a 3.8L so putting one on a 7.2L will be useless go twin turbo if you want to be a little different

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post #5 of 5 (permalink) Old 03-31-04, 03:28 PM
Two SC 61's = trouble
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Re: 429 blower Q?'s

Single T76 and injected 800h.p EASY torque would be hard to measure on chasis dyno!!! Too much wheel spin..And revs would be no more than 4000 rpm...That is a big problem!!!
Yes unless there are some imported Vortech, Paxton,Eaton,Kenny Bell,Procharger,powerdyne etc etc there is no blowers from Japan atleast on there engines std that will work...Unless its 429 cc...

Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
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