Home » Public Forums » GMCnet » DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake (Engine break in)
| DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #354531] |
Thu, 07 May 2020 20:26  |
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Husker92592
Messages: 137
Registered: August 2013
Location: Temecula ca
Karma: -4
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Senior Member |
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Well fellow MO HOE'rs its done, total geek out day for me and my engine. the best experience I have had and a slight tear.
My engine came from Gary Worbeck I have rebuilt the entire engine. bored .060 over slight "J" head modification, decked and EGR ports blocked 3 angle valve job. stock cast iron intake, q-JEt and Springfield ign and coil. double roller timing chain and RV cam Speed Pro CS1024R. 1500-4000 RPM 280intake/ 290 exhaust Advanced duration @ .050 204 intake/ 214 exhaust, Valve lift .448 intake/ .472 exhaust Lobe CL 112. sealed power hydraulic lifters HT 951
inertia factor is at .87 on the DYNO. I am absolutely impressed. totally blows away stock figures. now time to find the right gearing. the Manny Tranny should work well with this! Peak HP 294 @ 3800 RPM PEak TQ 469.2 @ 2800 RPM.
DATE 5/7/20
TIME 12:37
TIMING 35 DEGREES
FUEL PUMP GAS 86 OCTANE Q-JET 750 CFM Long tube headers
ENGINE 455 OLDSMOBILE .060 OVER J HEADS EGR BLOCKED OFF Melling High volume oil pump
SPEED RP - CBTrq lb-ft -CBPwr CHp - BSFC lb/Hphpr -Fuel lb/HR- AIR FUEL DRI -AIR FUEL PASS- Oil Pr psi -Water Degrees
1700 411.8 133.3 0.521 65.3 10.89 11.79 61.5 174
1800 413.4 141.7 0.534 65.9 10.6 11.09 61.7 174
1900 416.1 150.5 0.525 68.8 10.33 10.68 61.8 174
2000 422.4 160.8 0.519 72.3 10.17 10.49 62.3 174
2100 429.9 171.9 0.517 77 10 10.55 62.5 174
2200 436.6 182.9 0.498 79.3 10.22 10.76 62.6 174
2300 443.5 194.2 0.482 81.7 10.61 11.06 62.7 174
2400 452.7 206.9 0.48 86.3 10.95 11.28 62.2 174
2500 460.2 219 0.463 88.7 11.16 11.32 61.9 174
2600 465.4 230.4 0.46 93.3 11.39 11.57 61.9 174
2700 468.7 240.9 0.451 96.3 11.72 11.56 62.2 174
2800 469.2 250.1 0.447 99.8 11.89 11.83 62.3 174
2900 467.6 258.2 0.449 103.8 11.84 11.77 62.3 174
3000 463.6 264.8 0.461 110.3 12 11.96 62.3 174
3100 458.9 270.9 0.488 119.6 12.09 11.99 62.3 174
3200 455.1 277.3 0.524 131.3 12.05 12.03 62.8 174
3300 449.6 282.5 0.543 139.4 12.17 12.15 63.7 174
3400 442 286.1 0.547 142.9 12.27 12.15 64.4 174
3500 433.4 288.8 0.542 143.9 12.43 12.41 65 174
3600 424.4 290.9 0.539 144.1 12.3 12.46 65.5 174
3700 415.8 292.9 0.542 145.8 12.11 12.54 65.7 174
3800 406.3 294 0.549 148.8 12.11 12.73 65.8 174
3900 394.7 293.1 0.572 155.8 12.02 12.84 64.5 174
4000 382.3 291.2 0.604 163.9 11.93 13.07 63.1 175
1974 GMC Sequoia 26'
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| Re: [GMCnet] DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #354533 is a reply to message #354531] |
Thu, 07 May 2020 20:47  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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WOW! What a torque monster!
D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com
________________________________
From: Gmclist on behalf of Grant Schaffer via Gmclist
Sent: Thursday, May 7, 2020 20:26
To: gmclist@list.gmcnet.org
Cc: Grant Schaffer
Subject: [GMCnet] DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake
Well fellow MO HOE'rs its done, total geek out day for me and my engine. the best experience I have had and a slight tear.
My engine came from Gary Worbeck I have rebuilt the entire engine. bored .060 over slight "J" head modification, decked and EGR ports blocked 3 angle
valve job. stock cast iron intake, q-JEt and Springfield ign and coil. double roller timing chain and RV cam Speed Pro CS1024R. 1500-4000 RPM
280intake/ 290 exhaust Advanced duration @ .050 204 intake/ 214 exhaust, Valve lift .448 intake/ .472 exhaust Lobe CL 112. sealed power hydraulic
lifters HT 951
inertia factor is at .87 on the DYNO. I am absolutely impressed. totally blows away stock figures. now time to find the right gearing. the Manny
Tranny should work well with this! Peak HP 294 @ 3800 RPM PEak TQ 469.2 @ 2800 RPM.
DATE 5/7/20
TIME 12:37
TIMING 35 DEGREES
FUEL PUMP GAS 86 OCTANE Q-JET 750 CFM Long tube headers
ENGINE 455 OLDSMOBILE .060 OVER J HEADS EGR BLOCKED OFF Melling High volume oil pump
SPEED RP - CBTrq lb-ft -CBPwr CHp - BSFC lb/Hphpr -Fuel lb/HR- AIR FUEL DRI -AIR FUEL PASS- Oil Pr psi -Water Degrees
1700 411.8 133.3 0.521 65.3 10.89 11.79 61.5 174
1800 413.4 141.7 0.534 65.9 10.6 11.09 61.7 174
1900 416.1 150.5 0.525 68.8 10.33 10.68 61.8 174
2000 422.4 160.8 0.519 72.3 10.17 10.49 62.3 174
2100 429.9 171.9 0.517 77 10 10.55 62.5 174
2200 436.6 182.9 0.498 79.3 10.22 10.76 62.6 174
2300 443.5 194.2 0.482 81.7 10.61 11.06 62.7 174
2400 452.7 206.9 0.48 86.3 10.95 11.28 62.2 174
2500 460.2 219 0.463 88.7 11.16 11.32 61.9 174
2600 465.4 230.4 0.46 93.3 11.39 11.57 61.9 174
2700 468.7 240.9 0.451 96.3 11.72 11.56 62.2 174
2800 469.2 250.1 0.447 99.8 11.89 11.83 62.3 174
2900 467.6 258.2 0.449 103.8 11.84 11.77 62.3 174
3000 463.6 264.8 0.461 110.3 12 11.96 62.3 174
3100 458.9 270.9 0.488 119.6 12.09 11.99 62.3 174
3200 455.1 277.3 0.524 131.3 12.05 12.03 62.8 174
3300 449.6 282.5 0.543 139.4 12.17 12.15 63.7 174
3400 442 286.1 0.547 142.9 12.27 12.15 64.4 174
3500 433.4 288.8 0.542 143.9 12.43 12.41 65 174
3600 424.4 290.9 0.539 144.1 12.3 12.46 65.5 174
3700 415.8 292.9 0.542 145.8 12.11 12.54 65.7 174
3800 406.3 294 0.549 148.8 12.11 12.73 65.8 174
3900 394.7 293.1 0.572 155.8 12.02 12.84 64.5 174
4000 382.3 291.2 0.604 163.9 11.93 13.07 63.1 175
--
1974 GMC Sequoia 26'
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| Re: [GMCnet] DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #354537 is a reply to message #354531] |
Thu, 07 May 2020 23:24 |
Rollerg
Messages: 111
Registered: November 2014
Location: Marysville, MI
Karma: 0
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Senior Member |
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Travis,
Some info on rebuilt engine. Info you may need on your rebuild.
Gary
Gary Coaster / Reno, NV
1977 GMC Eleganza ll
GMC RV Day Night Shade Sales
GMCShades@gmail.com
www.GMCMotorhomemarketplace.com/GMC_Shades/
> On May 7, 2020, at 6:27 PM, Grant Schaffer via Gmclist wrote:
>
> Well fellow MO HOE'rs its done, total geek out day for me and my engine. the best experience I have had and a slight tear.
>
> My engine came from Gary Worbeck I have rebuilt the entire engine. bored .060 over slight "J" head modification, decked and EGR ports blocked 3 angle
> valve job. stock cast iron intake, q-JEt and Springfield ign and coil. double roller timing chain and RV cam Speed Pro CS1024R. 1500-4000 RPM
> 280intake/ 290 exhaust Advanced duration @ .050 204 intake/ 214 exhaust, Valve lift .448 intake/ .472 exhaust Lobe CL 112. sealed power hydraulic
> lifters HT 951
>
> inertia factor is at .87 on the DYNO. I am absolutely impressed. totally blows away stock figures. now time to find the right gearing. the Manny
> Tranny should work well with this! Peak HP 294 @ 3800 RPM PEak TQ 469.2 @ 2800 RPM.
>
> DATE 5/7/20
> TIME 12:37
>
> TIMING 35 DEGREES
> FUEL PUMP GAS 86 OCTANE Q-JET 750 CFM Long tube headers
>
> ENGINE 455 OLDSMOBILE .060 OVER J HEADS EGR BLOCKED OFF Melling High volume oil pump
>
> SPEED RP - CBTrq lb-ft -CBPwr CHp - BSFC lb/Hphpr -Fuel lb/HR- AIR FUEL DRI -AIR FUEL PASS- Oil Pr psi -Water Degrees
>
> 1700 411.8 133.3 0.521 65.3 10.89 11.79 61.5 174
> 1800 413.4 141.7 0.534 65.9 10.6 11.09 61.7 174
> 1900 416.1 150.5 0.525 68.8 10.33 10.68 61.8 174
> 2000 422.4 160.8 0.519 72.3 10.17 10.49 62.3 174
> 2100 429.9 171.9 0.517 77 10 10.55 62.5 174
> 2200 436.6 182.9 0.498 79.3 10.22 10.76 62.6 174
> 2300 443.5 194.2 0.482 81.7 10.61 11.06 62.7 174
> 2400 452.7 206.9 0.48 86.3 10.95 11.28 62.2 174
> 2500 460.2 219 0.463 88.7 11.16 11.32 61.9 174
> 2600 465.4 230.4 0.46 93.3 11.39 11.57 61.9 174
> 2700 468.7 240.9 0.451 96.3 11.72 11.56 62.2 174
> 2800 469.2 250.1 0.447 99.8 11.89 11.83 62.3 174
> 2900 467.6 258.2 0.449 103.8 11.84 11.77 62.3 174
> 3000 463.6 264.8 0.461 110.3 12 11.96 62.3 174
> 3100 458.9 270.9 0.488 119.6 12.09 11.99 62.3 174
> 3200 455.1 277.3 0.524 131.3 12.05 12.03 62.8 174
> 3300 449.6 282.5 0.543 139.4 12.17 12.15 63.7 174
> 3400 442 286.1 0.547 142.9 12.27 12.15 64.4 174
> 3500 433.4 288.8 0.542 143.9 12.43 12.41 65 174
> 3600 424.4 290.9 0.539 144.1 12.3 12.46 65.5 174
> 3700 415.8 292.9 0.542 145.8 12.11 12.54 65.7 174
> 3800 406.3 294 0.549 148.8 12.11 12.73 65.8 174
> 3900 394.7 293.1 0.572 155.8 12.02 12.84 64.5 174
> 4000 382.3 291.2 0.604 163.9 11.93 13.07 63.1 175
> --
> 1974 GMC Sequoia 26'
>
>
> _______________________________________________
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> Unsubscribe or Change List Options:
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| Re: [GMCnet] DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #354539 is a reply to message #354537] |
Thu, 07 May 2020 23:29 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Grant, Let me supply the LSD Final drive.
We are moving several as it does help.
On Thu, May 7, 2020 at 9:24 PM Gary via Gmclist
wrote:
> Travis,
> Some info on rebuilt engine. Info you may need on your rebuild.
> Gary
>
> Gary Coaster / Reno, NV
> 1977 GMC Eleganza ll
> GMC RV Day Night Shade Sales
> GMCShades@gmail.com
> www.GMCMotorhomemarketplace.com/GMC_Shades/
>
>> On May 7, 2020, at 6:27 PM, Grant Schaffer via Gmclist gmclist@list.gmcnet.org> wrote:
>>
>> Well fellow MO HOE'rs its done, total geek out day for me and my
> engine. the best experience I have had and a slight tear.
>>
>> My engine came from Gary Worbeck I have rebuilt the entire engine. bored
> .060 over slight "J" head modification, decked and EGR ports blocked 3 angle
>> valve job. stock cast iron intake, q-JEt and Springfield ign and coil.
> double roller timing chain and RV cam Speed Pro CS1024R. 1500-4000 RPM
>> 280intake/ 290 exhaust Advanced duration @ .050 204 intake/ 214 exhaust,
> Valve lift .448 intake/ .472 exhaust Lobe CL 112. sealed power hydraulic
>> lifters HT 951
>>
>> inertia factor is at .87 on the DYNO. I am absolutely impressed. totally
> blows away stock figures. now time to find the right gearing. the Manny
>> Tranny should work well with this! Peak HP 294 @ 3800 RPM PEak TQ 469.2
> @ 2800 RPM.
>>
>> DATE 5/7/20
>> TIME 12:37
>>
>> TIMING 35 DEGREES
>> FUEL PUMP GAS 86 OCTANE Q-JET 750 CFM Long tube headers
>
>>
>> ENGINE 455 OLDSMOBILE .060 OVER J HEADS EGR BLOCKED OFF
> Melling High volume oil pump
>>
>> SPEED RP - CBTrq lb-ft -CBPwr CHp - BSFC lb/Hphpr -Fuel lb/HR-
> AIR FUEL DRI -AIR FUEL PASS- Oil Pr psi -Water Degrees
>>
>> 1700 411.8 133.3 0.521 65.3 10.89 11.79 61.5 174
>> 1800 413.4 141.7 0.534 65.9 10.6 11.09 61.7 174
>> 1900 416.1 150.5 0.525 68.8 10.33 10.68 61.8 174
>> 2000 422.4 160.8 0.519 72.3 10.17 10.49 62.3 174
>> 2100 429.9 171.9 0.517 77 10 10.55 62.5 174
>> 2200 436.6 182.9 0.498 79.3 10.22 10.76 62.6 174
>> 2300 443.5 194.2 0.482 81.7 10.61 11.06 62.7 174
>> 2400 452.7 206.9 0.48 86.3 10.95 11.28 62.2 174
>> 2500 460.2 219 0.463 88.7 11.16 11.32 61.9 174
>> 2600 465.4 230.4 0.46 93.3 11.39 11.57 61.9 174
>> 2700 468.7 240.9 0.451 96.3 11.72 11.56 62.2 174
>> 2800 469.2 250.1 0.447 99.8 11.89 11.83 62.3 174
>> 2900 467.6 258.2 0.449 103.8 11.84 11.77 62.3 174
>> 3000 463.6 264.8 0.461 110.3 12 11.96 62.3 174
>> 3100 458.9 270.9 0.488 119.6 12.09 11.99 62.3 174
>> 3200 455.1 277.3 0.524 131.3 12.05 12.03 62.8 174
>> 3300 449.6 282.5 0.543 139.4 12.17 12.15 63.7 174
>> 3400 442 286.1 0.547 142.9 12.27 12.15 64.4 174
>> 3500 433.4 288.8 0.542 143.9 12.43 12.41 65 174
>> 3600 424.4 290.9 0.539 144.1 12.3 12.46 65.5 174
>> 3700 415.8 292.9 0.542 145.8 12.11 12.54 65.7 174
>> 3800 406.3 294 0.549 148.8 12.11 12.73 65.8 174
>> 3900 394.7 293.1 0.572 155.8 12.02 12.84 64.5 174
>> 4000 382.3 291.2 0.604 163.9 11.93 13.07 63.1 175
>> --
>> 1974 GMC Sequoia 26'
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #354544 is a reply to message #354541] |
Fri, 08 May 2020 12:57 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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Is it dented here? Drivers side at differential?
http://www.gmcmhphotos.com/photos/oil-pan-dent/p61314-image65.html
Husker92592 wrote on Fri, 08 May 2020 12:53Yes Jim, that is next on my list to figure out, Withe these numbers, I am not sure if the 3.70 is the right choice but maybe we should have that discussion. I will also be getting the limited slip. I am most interested in the torque curve in this motor as it is almost flat above 400 ft/#. Kinda crazy. In either case its about matching the right gearing for 60-65 MPH and towing.
Out side of break in which there were issues, from builder missed the oil plug on the back of the block, pan was bent, lost 10 gallons of fuel on the floor to break in needed the stock oil filter location to pass by the headers, I dont have to worry about the engine when installed.
today i will be getting prices on Frank Condos hoist so plans for reinstall are moving forward.
Gents in my geekness on this issue I believe the dyno runs are important to match your final drive with the engine we are re-manufacturing in our coaches as well as suspected useage. I am excited about this process. and will update as things move forward.
I did not expect these results by the way. Quite honestly i didnt know what to expect.
C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #354546 is a reply to message #354544] |
Fri, 08 May 2020 14:51 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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On Fri, May 8, 2020 at 10:58 AM Charles Boyd via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Is it dented here? Drivers side at differential?
> http://www.gmcmhphotos.com/photos/oil-pan-dent/p61314-image65.html
>
> Re. Gear ratio, we find that there are many times you’ll be below 60mph
> and having the 3.70 does help.
out of every 20 gears, we sell only one or two.
RPM difference 3.55 / 3.70 is only
130-140 RPM at 65mph but the torque
Is sensitive.
>
> Husker92592 wrote on Fri, 08 May 2020 12:53
>> Yes Jim, that is next on my list to figure out, Withe these numbers, I
> am not sure if the 3.70 is the right choice but maybe we should have that
>> discussion. I will also be getting the limited slip. I am most
> interested in the torque curve in this motor as it is almost flat above 400
> ft/#.
>> Kinda crazy. In either case its about matching the right gearing for
> 60-65 MPH and towing.
>>
>> Out side of break in which there were issues, from builder missed the
> oil plug on the back of the block, pan was bent, lost 10 gallons of fuel on
>> the floor to break in needed the stock oil filter location to pass by
> the headers, I dont have to worry about the engine when installed.
>>
>> today i will be getting prices on Frank Condos hoist so plans for
> reinstall are moving forward.
>>
>> Gents in my geekness on this issue I believe the dyno runs are important
> to match your final drive with the engine we are re-manufacturing in our
>> coaches as well as suspected useage. I am excited about this process.
> and will update as things move forward.
>>
>> I did not expect these results by the way. Quite honestly i didnt know
> what to expect.
>
> --
> C. Boyd
> 76 Crestmont
> East Tennessee
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: DYNO RUN 1972 455 .060 bore with 1968 crank, stock CI intake [message #355937 is a reply to message #354531] |
Sun, 21 June 2020 00:55 |
|
Husker92592
Messages: 137
Registered: August 2013
Location: Temecula ca
Karma: -4
|
Senior Member |
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So its has been two weeks and the following is in stalled by my self
New engine
new trans
new front end
new brake lines
rebuilt original radiator
two piece fan shroud
remote trans cooler
radiator rock guard
I have made a modified a frame hoist and gantry with 1/4" of play it all came out the top with ease. good thing I took this route as it allowed me to get the new suspension parts in as well as the new axels and brakes.
easy real easy
engine was out in 2 hours , trans out in an hour took my time putting all back in so I dont have to climb back under.
This can be done by your self, not recommended but when you live in an area where people dont maintain their anything its what you are dealt with.
Frank Condo was a great help on the hoist.
and Jim K with some parts.
1974 GMC Sequoia 26'
[Updated on: Sun, 21 June 2020 00:56] Report message to a moderator |
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