Bad Memorial day
05-31-2009, 12:17 PM
#21
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4.25 crank would have made it a 496+- depending on the overbore.
Anything bigger than that is worthless in that engine IMO.
05-31-2009, 12:22 PM
#22
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Take the whole pile of iron to a machine shop down there. OWENS is probably the better one down there and let him TELL you what you have and make a decision on wether to mess with putting it back together based on real info and not speculation off of this board. He is up in Pearland. There isn't any other shops down there that I would trust with anything.
He will shoot you straight. If you need parts, I got a whole shop full of them. I got some engines down there right now also if yo uwant to look at some of them. He is running them on his dyno.
Find out what parts you have from him and I might take what is still good in on trade from you.
He will shoot you straight. If you need parts, I got a whole shop full of them. I got some engines down there right now also if yo uwant to look at some of them. He is running them on his dyno.
Find out what parts you have from him and I might take what is still good in on trade from you.
05-31-2009, 08:22 PM
#23
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Jeff,,,i call BS on that.
My engine is a standard deck Bowtie 454/509, with 4 " crank and 4.500 bore.
And still have room to go .90 over !!! easy.
U can easy build a 572 out of mine so a 620 out of a bowtie talldeck would be no problem.
The bowtie's are siamese bored blocks ,,i think the new ones are not ?!
The biggest crank i ever seen in a bowtie talldeck was 5.25 " stroke. Still running.
mmmmhhhhh.........................
I say fix the block and go with an engine builder that knows what he is doing.
My engine is a standard deck Bowtie 454/509, with 4 " crank and 4.500 bore.
And still have room to go .90 over !!! easy.
U can easy build a 572 out of mine so a 620 out of a bowtie talldeck would be no problem.
The bowtie's are siamese bored blocks ,,i think the new ones are not ?!
The biggest crank i ever seen in a bowtie talldeck was 5.25 " stroke. Still running.
mmmmhhhhh.........................
I say fix the block and go with an engine builder that knows what he is doing.
06-01-2009, 09:50 AM
#25
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The 500HP, 540 cube Bulldog did use a Bowtie block and Lunati crank. The stroke is most definitely 4.375. The bore would be around 4.43 to make 540 cube.
I don't think you can put that crank into a standard deck GM block.
I suggest you try and have the block sleeved. Buying a new block is going to be big $$.
It all depends on how much you want to spend on a boat that is for sale.
If you do really want to sell the boat the easiest and least expensive thing to do is buy a "take-out" running engine or buy a shortblock 502.
I don't think you can put that crank into a standard deck GM block.
I suggest you try and have the block sleeved. Buying a new block is going to be big $$.
It all depends on how much you want to spend on a boat that is for sale.
If you do really want to sell the boat the easiest and least expensive thing to do is buy a "take-out" running engine or buy a shortblock 502.
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Patrick
Patrick
06-01-2009, 09:54 AM
#26
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Here's what I found doing a quick google...
HP500 Bulldog Specifications
Propshaft Horsepower: 470 (350 kw)
Displacement (Liter/CID): 8.9/542
Cylinders: V-8
Bore (in/mm): 4.44/113
Stroke (in/mm): 4.375/111
Compression Ratio: 8.6:1
Fuel Requirements: 87 Posted Octane (R+M)/2
Full Throttle RPM Range: 4800-5200
Ignition Type: Thunderbolt V
Alternator (amps/watts): 55/776
Length (in/mm): 47.5/1207
Width (in/mm): 32.75/648
Height (in/mm): 25.5/648
Weight (lbs/kg): 1540/699
Warranty: 1-year limited, 3-year limited corrosion
HP500 Bulldog Specifications
Propshaft Horsepower: 470 (350 kw)
Displacement (Liter/CID): 8.9/542
Cylinders: V-8
Bore (in/mm): 4.44/113
Stroke (in/mm): 4.375/111
Compression Ratio: 8.6:1
Fuel Requirements: 87 Posted Octane (R+M)/2
Full Throttle RPM Range: 4800-5200
Ignition Type: Thunderbolt V
Alternator (amps/watts): 55/776
Length (in/mm): 47.5/1207
Width (in/mm): 32.75/648
Height (in/mm): 25.5/648
Weight (lbs/kg): 1540/699
Warranty: 1-year limited, 3-year limited corrosion
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Patrick
Patrick
06-01-2009, 05:41 PM
#27
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Location: LAMARQUE TX
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500 bulldog
Thanks for the help I took the motor the the engine shop today getting the block sleeved and the heads crank etc all checked out and reballanced
06-01-2009, 05:58 PM
#28
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