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Old 02-03-2005, 02:50   #1 (permalink)
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blower engine mods

ive got a 6-71 coming my way

351 clevo
what comp should i be looking at 8 ? , 8.5?
im only after low boost
cast or forged pistons?
will i need good rods or will stock do with new bolts/studs?
does anyone know where i can get a inlet manifold?

im starting here so hit me with some questions and / or answers if any
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Old 02-03-2005, 05:49   #2 (permalink)
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Re: blower engine mods

the lower the boost, the higher the static compression you can have Depending on how low boost your talking too, i mean surely the ol clevo can handle a few pounds into her, its not like your running 20+psi into it :) If your talking around the 6psi mark, i would honestly be surprised if the stock rods,pistons, crank cant take that.
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Old 02-03-2005, 23:25   #3 (permalink)
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Re: blower engine mods

I run my clevo on about 12 psi. It has stock rods and crank, nothing has broken so far. put new rod bolts in, they only cost $80 or so for the pack. I also have forged pistons, you dont have to have them, but they are good insurance.

Compression should be somewhere between 8 and 9:1 depending on cam and timing.

All depends on what you want out of it in the end..
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Old 02-04-2005, 00:10   #4 (permalink)
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Re: blower engine mods

do forgies wear out the bore more than cast
i only want about 5 pound ( deoending on pulleys available)
on the sprintex site there was a formula which had a 351 at about 6800 rpm with 5 pound creating about 420kw - that sounded nice to me
i may stick to 4ma with std rods shotpeened with arp bolts ( as all that is cheap -well only about$700 with block and crank machined)
but still not sure about pistons (cast - forged)
and compression ( 8 or 8.5)

what about cams , any good ones sugested?
thanks for the input fellow revheads
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Old 02-04-2005, 04:01   #5 (permalink)
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Re: blower engine mods

In some ways the Hypereutectic [hyper] pistons are better as they can run closer piston bore clearance...Though on blower I wouldn't go too tight..Too much clearance can lead to split bores.....A Sprintex may have more flow at higher rpm also..
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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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Old 02-04-2005, 06:39   #6 (permalink)
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Re: blower engine mods

ive got a 6-71 gmc or a 6v53 to put on , it was just the sprintex website that i got the kw figure from
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Old 02-11-2005, 02:37   #7 (permalink)
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Re: blower engine mods

now the budget will be blown

stroker - scat , carrillo rods , arias or ross forgies
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Old 02-11-2005, 04:49   #8 (permalink)
Two SC 61's = trouble
 
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Re: blower engine mods

Scat, Oliver, and C.P....
http://www.cppistons.com/

Aussie agents...
http://www.qri.biz/content.asp
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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..
Passengers, myocardial infarction material..
R.I.P Possum...
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Old 02-12-2005, 03:43   #9 (permalink)
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Re: blower engine mods

cheers
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Old 03-09-2005, 01:28   #10 (permalink)
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Re: blower engine mods

Hey sorry to jump in on your thread pinkbits but im seriously considering bolting on a 6/71 ive had sitting back for a while, im runnin 11.1 comp at the moment and have spent a fair bit on the bottom end plus the 3v heads im just wondering what other costs are involved in fitting a blower. I dont have a manifold to suit and as im running a windsor block with clevo heads is a custom the only way or is there a company that makes such manifolds??? im gonna run twin carbs which i factored in besides those and the pulleys is there any other things im gonna need or need to upgrade???
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