463 EFI Build
July 3rd, 2018, 02:52 PM
#1
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463 EFI Build
Did another EFI build for someone on here. The specs are;
.040 over F block
My Custom Racetec piston, 15cc dish, 10.0:1
My Procomp heads, 2.125/1.68
Custom Lunati Hyd Roller, 231/238 on a 112lsa.
Holley Street Dominator intake, bunged for EFI
AEM Infinity 508 ECU, coil on plug
Holley 950cfm throttle body
Eagle Crank and H beam rods
Studded and strapped block
First set of pulls done with Valvoline VR1 20W-50, second set of pulls done with Mobil 1 Synthetic 15W-50
Remember all pulls are done with mufflers and at or close to running temps. These are the second set of pulls. Anyone want to guess the difference in hp between the two oils? I have that sheet too.
Hope this helps. Thanks!
.040 over F block
My Custom Racetec piston, 15cc dish, 10.0:1
My Procomp heads, 2.125/1.68
Custom Lunati Hyd Roller, 231/238 on a 112lsa.
Holley Street Dominator intake, bunged for EFI
AEM Infinity 508 ECU, coil on plug
Holley 950cfm throttle body
Eagle Crank and H beam rods
Studded and strapped block
First set of pulls done with Valvoline VR1 20W-50, second set of pulls done with Mobil 1 Synthetic 15W-50
Remember all pulls are done with mufflers and at or close to running temps. These are the second set of pulls. Anyone want to guess the difference in hp between the two oils? I have that sheet too.
Hope this helps. Thanks!
Last edited by cutlassefi; July 3rd, 2018 at 02:56 PM.
July 3rd, 2018, 03:10 PM
#3
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Take a guess!
And something else you all may want to notice, it made as much or more at 33* of timing as it did at 34. Too many of you are hung up on the "36* all in by 3000" concept. I've done dozens of these and have yet to have one make more power at 36* than at a lower amount of total advance.
And something else you all may want to notice, it made as much or more at 33* of timing as it did at 34. Too many of you are hung up on the "36* all in by 3000" concept. I've done dozens of these and have yet to have one make more power at 36* than at a lower amount of total advance.
Last edited by cutlassefi; July 3rd, 2018 at 03:38 PM.
July 4th, 2018, 05:16 AM
#8
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Well it seems Christian wins the boobie prize. It was about a 3hp difference. Which means, either the Mobil 1 isn’t really that great, OR that the VR1 is really that good. I like Mobil 1 but I’ll go with the latter.
Last edited by cutlassefi; July 4th, 2018 at 05:21 AM.
July 4th, 2018, 07:30 PM
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Couple of observations. Why does the oil pressure drop and come back. I've seen a few dyno tests posted by yourself, why is HP peak always seem to be at such a low RPM?
July 5th, 2018, 04:56 AM
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July 5th, 2018, 07:16 AM
#13
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Because it doesn't need to be higher. HP is all about moving air through the engine. A 350 needs to rev to 6500 RPM to move as much air as a 455 does at 5000 RPM. Once you factor in reciprocating mass and resulting stresses, it's a trade-off as to where you want the HP peak to be.
July 5th, 2018, 07:59 PM
#16
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Because it doesn't need to be higher. HP is all about moving air through the engine. A 350 needs to rev to 6500 RPM to move as much air as a 455 does at 5000 RPM. Once you factor in reciprocating mass and resulting stresses, it's a trade-off as to where you want the HP peak to be.
Which is quicker?
500 HP @ 6500 520 TQ @ 4400
500 HP @ 5300 520 TQ @ 3800
Last edited by VORTECPRO; July 5th, 2018 at 08:09 PM.
July 5th, 2018, 08:08 PM
#17
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Valvoline VR1 20/50 oil is up on power with ring seal challenged engines, used mostly on big bore engines that are harder to seal due to bore size 4.500 on up. If the ring seal is good I would think a 4.185 bore would make more power with 10/30 oil. I've seen big HP gains with 0-20 LAT oil. I also like Maxima a lot, it does not foam, important on my Buick, not big HP though.
July 6th, 2018, 11:01 AM
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Thanks.
July 7th, 2018, 06:09 AM
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July 7th, 2018, 12:12 PM
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July 9th, 2018, 02:44 PM
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The 500@ 6500. Reasoning is you will have to gear the other motor higher (lower numerically) for them to cross the finish line at the same mph (equal size tires, weight, etc). This lessened gear reduction will consequently reduce torque multiplication at the rear wheels.
July 9th, 2018, 07:13 PM
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The 500@ 6500. Reasoning is you will have to gear the other motor higher (lower numerically) for them to cross the finish line at the same mph (equal size tires, weight, etc). This lessened gear reduction will consequently reduce torque multiplication at the rear wheels.
Last edited by VORTECPRO; July 9th, 2018 at 07:15 PM.
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