Dulcich 408 on dyno - offset heads

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oh, looks like dulcich built the motor for a solid flat tappet vs solid roller cam comparison for enginemasters.
he is just running the motor in now to make sure all is good before shooting i think.
 
MOPARMAGA said:
Unfortunately yellow rose isnt allowed to be a member
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If he wanted to come back he could do it easily even if banned. I know this because he was banned under “madscientist” & came back as YR. Nothing is stopping him from posting here.
 
rumblefish360 said:
If he wanted to come back he could do it easily even if banned. I know this because he was banned under “madscientist” & came back as YR. Nothing is stopping him from posting here.
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oh. so it seems the progression is
madscientist>yellowrose>ratbastid

^ that was my point with my original comment.
 
TT5.9mag said:
I think @pittsburghracer ended up having 8 .550 offset rockers made. He had .350s and it wasn’t enough. And w2 stuff was too much.
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You are absolutely right. I had some .350 and .550 made and like an idiot went with the .550 because I had to at that point. That was a perfect example of one of my projects that took way to long and several bad decisions were made. I’m probably going to use the .350 off set rockers on my TrickFlows heads.
 
PBR....I thought we were fixin to talk about Pabst Blue Ribbon. dammit.
 
pittsburghracer said:
You are absolutely right. I had some .350 and .550 made and like an idiot went with the .550 because I had to at that point. That was a perfect example of one of my projects that took way to long and several bad decisions were made. I’m probably going to use the .350 off set rockers on my TrickFlows heads.
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I followed your moved pushrod E head post start to finish. I was really hoping to see that head on an engine at some point. Any plans to finish them?
 
TT5.9mag said:
I followed your moved pushrod E head post start to finish. I was really hoping to see that head on an engine at some point. Any plans to finish them?
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I gotta find out where they were sucking oil from. After two tries I put my other proven set of heads on. (And intake) That was supposedly a brand new Indy intake I bought used and on two engines I had issues with the engine sucking oil. When I pull my 422 apart in going to take some measurements off both intakes.
 
pittsburghracer said:
I gotta find out where they were sucking oil from. After two tries I put my other proven set of heads on. (And intake) That was supposedly a brand new Indy intake I bought used and on two engines I had issues with the engine sucking oil. When I pull my 422 apart in going to take some measurements off both intakes.
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Just a thought, I once had a new motorcycle with an inline aluminum headed engine that had bronze guides. Had a sucking of oil issue, thought it was obviously coming from the valve seals. Took some real sleuthing to determine it was coming from the outside of the guides as pressed into the heads. The factory installed guides apparently caused fissures in the aluminum guide bores, oil was being sucked by on two intake valves. You Never know
 
If a Putz like me can get a disappointing 493 with a much smaller cam ( 246/250 108 ) at 3800' then I am sure he can hit 600 at sea level withe that cam and porting .
 
I’m
pittsburghracer said:
I gotta find out where they were sucking oil from. After two tries I put my other proven set of heads on. (And intake) That was supposedly a brand new Indy intake I bought used and on two engines I had issues with the engine sucking oil. When I pull my 422 apart in going to take some measurements off both intakes.
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So what’s the hp limit on the stock 340/360 blocks?
 
Properly prepped I would guess in the mid to high 6s . Application would dictate . Drag racing is different from Tractor pulling for example...
 
12many said:
Just a thought, I once had a new motorcycle with an inline aluminum headed engine that had bronze guides. Had a sucking of oil issue, thought it was obviously coming from the valve seals. Took some real sleuthing to determine it was coming from the outside of the guides as pressed into the heads. The factory installed guides apparently caused fissures in the aluminum guide bores, oil was being sucked by on two intake valves. You Never know
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I still can’t get the thought out of my mind that this intake has done it on two different engines
 
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