SoCal Jet Boats
Classifieds => Engines / Engine Parts For Sale => Topic started by: H20Nut21Bahner on March 04, 2016, 01:05:11 PM
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A buddy of mine just picked up a 79 Crusader that has a BBC shirt block in it. I'm not positive of the casting number yet, he says it's gen 5 or 6.
Travis just left GS Marine and apparently he was told its got a hydraulic roller cam in it.
So, long story short, he's looking for advice as far as what heads to put on it.
Going to needs heads, lifters, push rods, rockers, valve covers and intake.
Anyone have any recomendations on a decent iron head or maybe have some parts they'd be willing to part with?
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Gen V and VI have a one piece rear main seal, and the provisions for a roller cam.
My Gen V did not have a roller cam in it, just a flat tappet hyd, from Indmar Marine, new, in 1996.
Make sure it has a roller cam before putting the roller lifters/dogbones/spider in it.
Otherwise, a 454HO is a decent package for a jet boat, A impeller
Some specs (cut and pasted):
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .510” Intake / .540” exhaust
Cam Duration @ .050”: 211 deg. Intake / 230 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: Iron Rectangular Port.
Combustion Chamber: 118cc
FWIW: Gen V heads will only fit Gen V, But Gen VI and Mark IV are interchangeable with the right head gasket.
Dan'l
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Gen V and VI have a one piece rear main seal, and the provisions for a roller cam.
My Gen V did not have a roller cam in it, just a flat tappet hyd, from Indmar Marine, new, in 1996.
Make sure it has a roller cam before putting the roller lifters/dogbones/spider in it.
Otherwise, a 454HO is a decent package for a jet boat, A impeller
Some specs (cut and pasted):
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .510” Intake / .540” exhaust
Cam Duration @ .050”: 211 deg. Intake / 230 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: Iron Rectangular Port.
Combustion Chamber: 118cc
FWIW: Gen V heads will only fit Gen V, But Gen VI and Mark IV are interchangeable with the right head gasket.
Dan'l
Any suggestions on a fair set of heads for this bucket?
My buddy's just looking to put it together, run it a few times and flip it.
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781/049's
Dan'l
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I have Rocker girdles, Air scoop & flame arrestor for sale on here
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I have a nice set of 781's bolt on ready. All the good stuff to make decent hp
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Got a bit more info today. Block casting number 10237297, from what I've found is a gen 6, 4 bolt 1996 vortec block
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I have set 049 peanut port.
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I have set 049 peanut port.
What are you looking to get for them?
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I have set 049 peanut port.
So...Are they 049's OR Peanut Ports?
781's and 049's are nearly Identical, and are Large Oval port heads.
Peanut ports resemble sbc ports. (14092360)
Dan'l
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I've got a set of rectangle port 990 heads off of a gen 5 502 that could use a rebuild. Let me know if you're interested.
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all of the cylinder heads mentioned here are from a gen4.(990, 049,781) they do make a conversion gasket, but it's not recommended in a marine application (per GN7). A friend of mine does have a set of vortec heads that were takeoffs.. it's also imperative that u know what pistons are in this motor. The vortec head will only work on a flat top or dished piston. call me if interested 562-307-5578 located in so cal.
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all of the cylinder heads mentioned here are from a gen4. they do make a conversion gasket, but it's not recommended in a marine application (per GN7). A friend of mine does have a set of vortex heads that were takeoffs.. call me if interested 562-307-5578
Sure miss Bob.
All that knowledge lost.
GT
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The Vortec pull-offs would be a great choice, especially for something you plan on unloading soon anyway.
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I appreciate all the help gentlemen.
Since I'm not up on what parts are interchangeable and what isn't, and also not knowing what the existing internals are, I think my best bet is to leave this one be and have him find another drop-in ready engine. Maybe later on down the road tear it down, see what it has and build it, if I can get the long block for the right price.
$500 fair for a block with rotating assembly?
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all of the cylinder heads mentioned here are from a gen4.(990, 049,781) they do make a conversion gasket, but it's not recommended in a marine application (per GN7). A friend of mine does have a set of vortec heads that were takeoffs.. it's also imperative that u know what pistons are in this motor. The vortec head will only work on a flat top or dished piston. call me if interested 562-307-5578 located in so cal.
What are you looking to get for the vortec heads?
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I have a gen v 502 with 049 heads on it and it runs very well with the full roller assembly
Sent by a Sleekcraft SST owner on the SoCal Jet boat app
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Mark 4 heads work on mark 6. Mark 5 heads are the odd ball or using mark 4 heads on mark 5 block. 049 781 are some of the best as cast ovals because they have lots of material to work with. If you looking for some cool cast heads I have them.
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I also have a set of small ovals that came off a GM CRATE HT502 mark 6 motor. With the hyd roller cam for carbureted Motor made 380hp and 560ftlbs
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I appreciate all the help gentlemen.
Since I'm not up on what parts are interchangeable and what isn't, and also not knowing what the existing internals are, I think my best bet is to leave this one be and have him find another drop-in ready engine. Maybe later on down the road tear it down, see what it has and build it, if I can get the long block for the right price.
$500 fair for a block with rotating assembly?
I have a two bolt block with arp main cap bolts, eagle forged crank and eagle I beam rods. Needs rebuild.
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I appreciate all the help gentlemen.
Since I'm not up on what parts are interchangeable and what isn't, and also not knowing what the existing internals are, I think my best bet is to leave this one be and have him find another drop-in ready engine. Maybe later on down the road tear it down, see what it has and build it, if I can get the long block for the right price.
$500 fair for a block with rotating assembly?
Vortec heads are horrible. They need extensive work to make any decent HP. Just like 049-781 you'll be into them 1500 real quick. Just like I did with mine.
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Shoot me some prices.
I know it sounds crazy, my buddy is trying to get this thing running as cheap as possible. I understand cheap isn't good, not my money or boat though so my hands are tied. Basically just trying to help a little
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Yep then you should use that gen 6 454 that's a nice motor to start with. I have gen 6 heads at home and lifters from factory gen 6 502 with dog bones. I'll sell the stuff cheep
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Yep then you should use that gen 6 454 that's a nice motor to start with. I have gen 6 heads at home and lifters from factory gen 6 502 with dog bones. I'll sell the stuff cheep
How much?
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Set of 16 lifters/dog bones, valley retainer that will be a direct fit for gen 6 and heads 250
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If you just wants to run it a couple times and flip it the last thing you want to do is build a new short block, much less buy used oval ports and piece together a long block with the existing short block. You'll be in it a few g's real quick for a so so engine either way. I'd look at one of these for your purposes
BBC 454 gen IV marine engine $500
http://losangeles.craigslist.org/wst/bpo/5477705954.html
via cPro for Craigslist
iOS: http://tinyurl.com/CL-iDevice
Android: http://tinyurl.com/CL-Android
454 Motor $1800
http://palmsprings.craigslist.org/bpo/5472547237.html
via cPro for Craigslist
iOS: http://tinyurl.com/CL-iDevice
Android: http://tinyurl.com/CL-Android
Complete running bbc Chevy 454 $1499
http://inlandempire.craigslist.org/bpo/5461621145.html
via cPro for Craigslist
iOS: http://tinyurl.com/CL-iDevice
Android: http://tinyurl.com/CL-Android
Sent from my iPhone using SoCal Jet Boats
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If you just wants to run it a couple times and flip it the last thing you want to do is build a new short block, much less buy used oval ports and piece together a long block with the existing short block. You'll be in it a few g's real quick for a so so engine either way. I'd look at one of these for your purposes
BBC 454 gen IV marine engine $500
http://losangeles.craigslist.org/wst/bpo/5477705954.html
via cPro for Craigslist
iOS: http://tinyurl.com/CL-iDevice
Android: http://tinyurl.com/CL-Android
454 Motor $1800
http://palmsprings.craigslist.org/bpo/5472547237.html
via cPro for Craigslist
iOS: http://tinyurl.com/CL-iDevice
Android: http://tinyurl.com/CL-Android
Complete running bbc Chevy 454 $1499
http://inlandempire.craigslist.org/bpo/5461621145.html
via cPro for Craigslist
iOS: http://tinyurl.com/CL-iDevice
Android: http://tinyurl.com/CL-Android
Sent from my iPhone using SoCal Jet Boats
Thanks for the links Brian.
For the short block, I was thinking if he found another drop in engine and I could get the current short block, slowly put it together for a future build. Sorry, wasn't real clear
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Would this happen to be a white Crusader with "Wet & Reckless" on the back?
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Would this happen to be a white Crusader with "Wet & Reckless" on the back?
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Ya .. saw pictures but haven't seen the boat yet
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Thanks for the links Brian.
For the short block, I was thinking if he found another drop in engine and I could get the current short block, slowly put it together for a future build. Sorry, wasn't real clear
No prob man! Makes sense on the future build, was just trying to help you find the "for now" engine
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No prob man! Makes sense on the future build, was just trying to help you find the "for now" engine
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Much appreciated! He's gonna take it by Kobys tomorrow. Looks like it may get pieced together
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Ya .. saw pictures but haven't seen the boat yet
Nice! I thought that may be it. I'm the guy who sold it.
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Got 4 point motor mounts with feet all polished .300.00
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Got motor in finally. With new rail kit.
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Looks good. Not sure how I feel about that last picture lol. I don't trust chains and bolts enough to get under a 700lb motor
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Looks good. Not sure how I feel about that last picture lol. I don't trust chains and bolts enough to get under a 700lb motor
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X2
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My oval port heads for my mark IV say 3964290 anyone have any info as far as the quality of them?
Sent from the Waterwheel crew
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For the love of god... Don't ever get under any engine thats hanging
WTF!!???!!
You won't even need to call 911, just the coroner
One fast station wagon!!!