SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: FordLover on May 19, 2015, 06:27:44 PM
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These do anything for ya? Was just lookin for some aluminum heads on craigslist and ebay for shits and giggles. Fresno isn't too far.
http://www.ebay.com/itm/Ford-429-460-482-514-545-557-Aluminum-Cylinder-Heads-/230838635565?hash=item35bf0e0c2d&vxp=mtr (http://www.ebay.com/itm/Ford-429-460-482-514-545-557-Aluminum-Cylinder-Heads-/230838635565?hash=item35bf0e0c2d&vxp=mtr)
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Made in China trash buddy. I've never run a set myself but I've seen the seats fall out of them, manifold bolts not lining up right, and the castings are pretty thin. I've also heard that they flow rates aren't even close to what they advertise
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Made in China trash buddy. I've never run a set myself but I've seen the seats fall out of them, manifold bolts not lining up right, and the castings are pretty thin. I've also heard that they flow rates aren't even close to what they advertise
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Thanks Pal! Exactly what I needed to hear.
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Don't want you to blow that thing up again bruh!
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We have sold hundreds of Chinese heads in the last 15 years with NO ISSUES FROM THE CASTINGS. That's more than I can say for the other 4 brands of American heads we also sell. We don't use Chineese valves in boat at all or any HP applications, only Ferrea valves, and those in the super alloy for exhaust valves and 6000 series in the intakes. Most "seat that fell out" failures were caused by cheap valves failing first, too much water injection, or any water injection below 1800 RPM. We also have 2 sets of AFRs and a RHS head in for repair at this time. TIMINATOR
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We have sold hundreds of Chinese heads in the last 15 years with NO ISSUES FROM THE CASTINGS. That's more than I can say for the other 4 brands of American heads we also sell. We don't use Chineese valves in boat at all or any HP applications, only Ferrea valves, and those in the super alloy for exhaust valves and 6000 series in the intakes. Most "seat that fell out" failures were caused by cheap valves failing first, too much water injection, or any water injection below 1800 RPM. We also have 2 sets of AFRs and a RHS head in for repair at this time. TIMINATOR
I'm a rebel I think I will use my Dart Pro 1 head and leave the Chinese for the more adventurous folks. I have yet to see any Chinese heads in big HP motors but I will keep a eye out. Out of principal I would not use them red/white/blue.
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I run AFR or the Pro 1s in my serious stuff and for my customers when applicable. We sell the Chinese heads for lesser apps, to peeps with less cash. Usually when the customer's BBChevy needs to be completely redone is a popular choice. To bake, blast, mag, install bronze race guides, surface, do a 5 angle valve job, cut the seats for larger valves, unshroud the chambers, cut the spring seats for larger springs, dissemble & and reassemble, and buy: valves, springs, retainers, locks, and stem seals, it is much more cost effective to buy the Chinese castings, and we haven't even mentioned porting either. I have a Super Flow flow bench and I know what everything flows.
What many people don't understand is that better flow at a higher lift than the cam that's in the engine is not contributing to the HP output. I.E. if the better head flows more at .750 lift and the cam is say .720 lift (then subtract the lash too, to get .695 lift) the flow at .750 lift is irrelevant. MOST lake boaters with jets usually run something like the Comp Cams 246@ .050 and .623 lift solid roller in a 496 BBC or BBF, its a pretty popular entry level deal with pocket ported stock heads or Pro-Comp oval port heads. The Pro Comps out of the box are comparable in price or cheaper than ported stock BBC heads, out flow them, and are 50 lbs. lighter. Cost effective!
In my 572", 14-71 blown, intercooled 25 Daytona, I run ported Big Brodies, my 598" 22 Daytona runs ported Dart 360s. Not all of my customers can afford that.
Wife and I drive a pair of Harleys, a GMC truck and a Cadillac, I buy American when practical, I also realize that many American companies import their entire inventory. The "house brand" of many parts purveyors is Chinese. That includes intake manifolds, rocker covers, roller rockers, oil pans, timing covers, air cleaners, and AN braided hose and fittings among others. TIMINATOR
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So would you recommend procomp heads over 781 or 049 heads?
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If you are satisfied with the way it runs and its not broken, leave it alone. Otherwise I have to know what the: boat, cam, intake, carb, exhaust, current valve sizes, porting if any, use of boat, and depth of your wallet is to give you good info. Heads could gain from 0 to 5 MPH depending on factors. Call me 623-877-8553