Dick Miller
November 11th, 2023, 06:53 AM
#1
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Join Date: Nov 2023
Posts: 27
Dick Miller
I just felt the need to share this. Posted a question to Dick Miller on their site about the Speedmaster heads.
Asked what their experience was and why they were listed as big block only. Was it due to the chamber size?
got a two word answer back:
CHINESE JUNK.
No reasons, no explanation, no supporting info to back anything up. Just those two words.
Apparently a miserable guy.
Asked what their experience was and why they were listed as big block only. Was it due to the chamber size?
got a two word answer back:
CHINESE JUNK.
No reasons, no explanation, no supporting info to back anything up. Just those two words.
Apparently a miserable guy.
November 11th, 2023, 11:48 AM
#5
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Join Date: May 2009
Location: Northern California
Posts: 1,774
I don’t know much about these heads, but much of the manufacturing that have moved from the USA to other countries is associated with a dramatic drop in quality, fit and parts longevity. Leading to the accusations of chinese junk.
Beyond that, there are some parts which are made there and elsewhere which are counterfeit and foul up even those of us trying to get good parts. This problem goes from computer parts, to auto parts to clothing. I only hope it doesn’t extend to aircraft parts… Ugh…
Finally there’s a good deal of resentment built up over the loss of manufacturing and other jobs to other countries whose wage and environmental practices are good for owners and managers, but not necessarily working people.
Without getting too political, that’s about as politely as I can put it.
Chris
Beyond that, there are some parts which are made there and elsewhere which are counterfeit and foul up even those of us trying to get good parts. This problem goes from computer parts, to auto parts to clothing. I only hope it doesn’t extend to aircraft parts… Ugh…
Finally there’s a good deal of resentment built up over the loss of manufacturing and other jobs to other countries whose wage and environmental practices are good for owners and managers, but not necessarily working people.
Without getting too political, that’s about as politely as I can put it.
Chris
November 11th, 2023, 11:58 AM
#6
Registered User
Thread Starter
Join Date: Nov 2023
Posts: 27
I don’t know much about these heads, but much of the manufacturing that have moved from the USA to other countries is associated with a dramatic drop in quality, fit and parts longevity. Leading to the accusations of chinese junk.
Beyond that, there are some parts which are made there and elsewhere which are counterfeit and foul up even those of us trying to get good parts. This problem goes from computer parts, to auto parts to clothing. I only hope it doesn’t extend to aircraft parts… Ugh…
Finally there’s a good deal of resentment built up over the loss of manufacturing and other jobs to other countries whose wage and environmental practices are good for owners and managers, but not necessarily working people.
Without getting too political, that’s about as politely as I can put it.
Chris
Beyond that, there are some parts which are made there and elsewhere which are counterfeit and foul up even those of us trying to get good parts. This problem goes from computer parts, to auto parts to clothing. I only hope it doesn’t extend to aircraft parts… Ugh…
Finally there’s a good deal of resentment built up over the loss of manufacturing and other jobs to other countries whose wage and environmental practices are good for owners and managers, but not necessarily working people.
Without getting too political, that’s about as politely as I can put it.
Chris
I already have a 403 with a hydraulic roller cam ( 224/ 230 at .050) and 4a heads. Rund mid to low 13's. Got the engine out and apart and am looking to do some upgrades. Next larger cam, possibly a victor intake.
Car has 3.42 gears and an ATI 10" Converter.
will be putting flat top pistons in it this go around. Has the stock dished pistons in it at .040.
That combination ran pretty good. Heads had the stock 2" valves.
Currently using a Performer RPM intake and a flowed 750 carb.
November 11th, 2023, 01:21 PM
#7
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Join Date: May 2009
Location: Northern California
Posts: 1,774
With your kind of experience, you might do well with these heads since you’d be able to read the quality markers better than many of us. Since I can’t read quality differences, if I were in the market, I’d likely go for Edelbrock heads. As it is, my street cars (a ‘66 98 convertible and ‘66 Starfire) have no real need for high performance parts. Especially as I’m 59…
The cost argument is compelling, but the two-word description above might be better put as “buyer beware”.
Wishing you good luck with your build whatever you decide. Engine building is well beyond what I can do, but I’m not too bad with electrical and carbs for street cars.
Cheers
Chris
The cost argument is compelling, but the two-word description above might be better put as “buyer beware”.
Wishing you good luck with your build whatever you decide. Engine building is well beyond what I can do, but I’m not too bad with electrical and carbs for street cars.
Cheers
Chris
November 11th, 2023, 04:57 PM
#8
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 9,139
How far were your pistons in hole? Were the 4A unmilled? My 4A measured at 86cc, they are very restrictive especially on the exhaust side. I would say you did pretty well with very low compression.
November 11th, 2023, 05:01 PM
#9
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Join Date: Nov 2023
Posts: 27
It pulled pretty good.
November 11th, 2023, 05:35 PM
#10
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 9,139
If the 4A were unported, they will be a good gain. Be warned the Olds Rocket parts 69cc 403 Procomp head actually measured 71 and 72cc, according to a member here. No matter what set you buy, you will need different valves springs than what they come with for your roller cam.
Last edited by olds 307 and 403; November 11th, 2023 at 07:54 PM.
November 11th, 2023, 06:57 PM
#11
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Thread Starter
Join Date: Nov 2023
Posts: 27
If tge 4A were unported, they will be a good gain. Be warned the Olds Rocket parts 69cc 403 Procomp head actually measured 71 and 72cc, according to a member here. No matter what set you buy, you will need different valves springs than what they come with for your roller cam.
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