Hemirunner
Well-Known Member
Interesting info. Did you dyno that 383 at the other shop you use to compare dyno's?
The DYNO, it WORKS! 383 test mule pulls a load.
- Thread starter IQ52
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IQ52
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Nope, these are the first few days we've really had the dyno working hard. The first engine we will use to compare the dynos will be the 528 Hemi. As soon as we get some results with the 528, we'll go to the other dyno for a comparison.
kdtjb
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I bet your dyno is farther from another dyno than any other dyno, LOL (talking miles)
Hemirunner
Well-Known Member
Refresh my memory on that combo.....
IQ52
Well-Known Member
Yeah, well, I haven't detailed any information on it yet. It's a motor that came out of Pennsylvania and had some quirks that the owner in California didn't like. Such as, wouldn't hold oil pressure at idle, and "This doesn't run like a 528 Hemi!" Found it to have a multitude of assembly errors, rocker shafts upside down, pushrods rubbing on the block, must have been honed w/o a deck plate, pistons and cylinder walls scored.
Now coupla' days away from being dyno ready. Its an Indy Maxx aluminum block, pump gas, solid roller, single Dominator on the standard Indy single plane, our mildly ported Indy 426-1 heads.
Lift................OOTB.................PORTED
.100.............69/69...................88/72
.200...........138/133................166/153
.300...........209/194................231/216
.400...........270/222................293/262
.500...........313/227................346/293
.600...........346/227................372/302
.700...........358/229................390/307
Hemirunner
Well-Known Member
Sounds like someone failed engine building 101 on that one. Did you raise the roof of those as cast exhaust ports a bit? The port exits at a funny angle to the header tube. That engine should exercise the dyno a bit....
IQ52
Well-Known Member
Yeah we did raise it some. There was a little back and forth on the cam duration. We did some cam grinding for psychological reasons and just didn't work the exhaust ports as much as we could have. Well, its for a street car, how fast DO you need to get to Walmart?
kdtjb
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Well, because your 148 miles from the closest wally world I'd say all you can get. LOL
Hemirunner
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That's a nice street car piece. My new street car engine is a world products aluminum based 540 hemi with twin 76mm precison turbo's. It'll test the water brake on the SF901 we use here so I'll let you know how that goes. That aluminum headed indy hemi will be on the dyno soon so we can see it fall short of your 528 lol....
IQ52
Well-Known Member
This hemi is for a 1969 Road Runner in Wrightwood, CA. The owner asked me if the engine would be okay to drive 50 miles to a car show and back.
I told him, "You can drive this to Maine and back if you can afford the fuel."
- - - Updated - - -
I wouldn't be afraid of any 572 normally aspirated hemi, but a twin turbo 540, I would treat with EXTREME respect.
IQ52
Well-Known Member
The 528 Hemi on 91 octane from the Stinker Station. Turns out we've some oil return issues and can't finish any higher rpm runs until we cure those.
4000 rpm...........608 TQ...............463 HP
4500 rpm...........647 TQ...............554 HP
5000 rpm...........661 TQ...............629 HP
5500 rpm...........657 TQ...............688 HP
5700 rpm...........667 TQ...............724 HP
6000 rpm...........648 TQ...............741 HP
6100 rpm...........646 TQ...............751 HP
6200 rpm.....oil pressure? We don't need no stinking oil pressure!
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Hemirunner
Well-Known Member
That thing is just waking up at 6200. I solved the oil return issues by restricting the oil to the cylinder heads. They really over oil the top.
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