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Old 08-21-2002, 05:58   #1 (permalink)
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late Boss 302 is it possible???

is it possible to build a boss V8 from an EB or later windsor??

using the bottom end, with a stroker in it (347)?? fitting ported Clevo 2 V heads, spacers to fit up the EFi manifold to the heads

using info that i have for an "old" boss, i dont reckon it'd be that hard to make one - has any one done it??

or is it unable to be done due to emisions? or is it just more cost effective to get some good windsor heads?

just tossing up some ideas for what to do on my next car
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Old 08-21-2002, 18:14   #2 (permalink)
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Mate you can buy GOOD aftermarket heads that will flow easy 400 h.p out of the box on a 302/5 Ltr with other induction bolt on mods.So why bother.Edelbrock/ Air Flow research[good but no agents in Oz] / Brodex/Trick Flow.To name a few. For just over $2k.{from} & alloy..Complete with good valve gear..
Down your way the way a popular Ford specialist uses the latter so they must be o.k..
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Old 08-21-2002, 19:11   #3 (permalink)
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The problem is water passages and such (from memory) Nothing is impossible of course.. just depends on how much money you want to spend.
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Old 08-21-2002, 20:51   #4 (permalink)
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Originally posted by xa-coupe
The problem is water passages and such (from memory) Nothing is impossible of course.. just depends on how much money you want to spend.
Clevos use a dry inlet manifold and the water enters the donk via the block, a Windsor's inlet is wet with water entering via the inlet manifold. The Clevo heads can easily be drilled to match a Boss style inlet. A company up in QLD was manufacturing carbed Boss inlets a dew years back, they advertised in Unique Cars, they may have an injected version.

BUT the reason why this isn't done nowadays, is as ebxr8240 said. Even the V8 Supercars run Windsor style heads!!

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Old 08-21-2002, 21:02   #5 (permalink)
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umm sorry , the supercars run Clevo style heads (BOSS 302):s2:
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Old 08-22-2002, 04:28   #6 (permalink)
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thatks guys ill probly end up getting some trick flows or edelbrocks but as i said i was just tossing up some ideas


cant wait till i get my new machine!!
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Old 08-22-2002, 07:02   #7 (permalink)
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Quote:
Originally posted by XR8DAZ1
umm sorry , the supercars run Clevo style heads (BOSS 302):s2:
Yea right whats the part number and brand etc?

The heads that Ford use are made by Yates with svt logo on them.There are just as many aftermarket heads for Ford as there is for Chevy,Thats heaps!!

The trouble with Clevo heads is that the ports are too low, made for clarence exhaust manifold, they need tongue's in ports on bottom to improve velocity.They are also heavy compared to alloy and don't take the compression with unleaded.Also the combustion chambers are made with slow burn tech. Modern heads have fast burn technology, heaps of swirl,hardened seats,to bring a Clevo head up to those specs would cost more and still be a heavy head pluss the hassle of drilling for water cooling.All this is listed on s.v.t [ex. s.v.o] catalogue..

The efi 5 Ltr windsor block is only good for 500h.p more than that it splits from mains to cam journals.. I'd be happy with 450 tho...
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Old 08-22-2002, 18:56   #8 (permalink)
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Quote:
Originally posted by ebxr8240


Yea right whats the part number and brand etc?

The heads that Ford use are made by Yates with svt logo on them.There are just as many aftermarket heads for Ford as there is for Chevy,Thats heaps!!

The trouble with Clevo heads is that the ports are too low, made for clarence exhaust manifold, they need tongue's in ports on bottom to improve velocity.They are also heavy compared to alloy and don't take the compression with unleaded.Also the combustion chambers are made with slow burn tech. Modern heads have fast burn technology, heaps of swirl,hardened seats,to bring a Clevo head up to those specs would cost more and still be a heavy head pluss the hassle of drilling for water cooling.All this is listed on s.v.t [ex. s.v.o] catalogue..
My mistake though, XR8Daz is correct, the V8SC heads are essentially Clevo based rather than Windsor, and are designed/supplied by Robert Yates (NASCARS Robert Yates Racing) to Ford.

The port tongues do help to smooth out the flow, but the big problem with Clevo exhaust still exists, gases have to virtually do a 90 degree turn to exit, to help this, the trick is to take some meat out of the top of the exhaust port to straighten the flow in conjunction with the tongues.

Having said this, the Clevo heads still flow better than Windsors though. But the aftemarket have really got behing the W and staying with W heads means you have access to all the goodies, going C heads hugely narrows your choices.

Kieron
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