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02-19-2009, 10:34 AM
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#1 |
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Registered User
Join Date: May 2003
Location: Ontario
Posts: 279
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Check my combo,please
Could someone give me some TRQ/HP numbers and a estimated 1/4 mileET please,here is the combo.
427 .030 over TRW forged pistons .250 dome Chev *241* oval port/open chamber heads 113cc approx 10.6 comp bowl work,gasket match 2.25/1.88 stainless valves Comp solid FT 282s cam 2400-6800 rpm 244/252@.050 .590/.598 lift Edelbrock RPM Intake, gasket matched to heads with 1" spacer Modified 750 dp Holley 2 inch Hooker super comps/3 inch exhaust built 350 turbo trans Neil Chance 9 1/2 3500 stall convertor F*rd 9 inch 4.30 gear 31 x13x15 tire 67 short box pickup weight approx 3800lbs lowered 4 1/2F 6 R trailing arms/coil springs block is at machine shop being cleaned,now is the time for me to adjust my combo if you think its needed,Thanks for your help Last edited by Ont67shortbox; 02-19-2009 at 02:19 PM. |
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02-19-2009, 10:42 AM
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#2 |
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Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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Re: Check my combo,please
12.80 in da 1/4..just a wild azz guess though. I'm not familiar with that head casting or how much "work" has been done to them.
I think the gear,tire and cam are just about matched for the engines RPM band. I would guess a real world 420 or so HP Look at the old L88 427's with 12-1 CR a solid cam and dual quads made 430 HP. Sounds like a fun combo.
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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02-19-2009, 11:15 AM
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#3 |
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Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: Check my combo,please
Need more head info and what kind of intake? If the heads flow enough I think you should run better then 420hp and 12.40s.
Check out this thread and post your info in there. More head and intake info would help though. http://67-72chevytrucks.com/vboard/s...d.php?t=317628
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83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo=  Douchebag Racing: Runs Fine all the Time |
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02-19-2009, 06:07 PM
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#4 |
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Senior Member
 
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: Check my combo,please
My desktop Dyno Says about
562hp @5500 and 583ft-lb @ 4000 wasn't sure about the heads so i used Edelbrock performer heads for a baseline. a much bigger set of heads like Victor CNC show about 605hp @ 6000 and 599 @ 4500 |
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02-19-2009, 09:07 PM
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#5 |
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Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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Re: Check my combo,please
If you noticed I said real world HP numbers. I have nothing against desk top dyno programs if you use them to track trends. It has been my experience...having built and dyno'd a few engines.... making over 1 HP per cubic inch is not as easy as magazines make it look. If it was the big 3 auto makers would of been doing it all along.
If you think about GM's 454 in the late 70' early 80's made barely over 240 HP. My full race 540 males 840 HP...thats 1.55 hp per cubic inch The 427 at 605 HP is 1.4x per cubic inch. Out of a pump gas truck engine?
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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02-19-2009, 09:26 PM
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#6 |
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Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: Check my combo,please
The desktop dynos are a bit on a high side usually. The best thing to use them for is to compare parts. Will changing the cam give you the results you want? That is what the desktop dynos are good for.
I have one of the better desktop dynos and I have every single bit of info for my motor and I know the motor doesn't put out what it says it should. If the 427 listed above put down 500hp that would be a very good number.
__________________
83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo= Douchebag Racing: Runs Fine all the Time |
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02-22-2009, 09:11 AM
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#7 | |
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Senior Member
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: Check my combo,please
Quote:
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02-22-2009, 05:09 PM
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#8 |
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Registered User
Join Date: Mar 2005
Location: usa
Posts: 142
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Re: Check my combo,please
can any body tell me what my 632 would make
block is dart 14to1 ross pistons soild roller cam 316 /320 .50 830 lift nos cam 4000 to 8100 rpm dart pro 1 cnc 355cc 230in/188exh 420cfm intake is a dart single thats port match with 1150 dominator two stage nos 300 and 250 shot ign is msd crank trigger with a msd programmable 6al-2 box trans th400 with a brake stall is coan 3500 now might put in a 5000 stall dana 60 with 513 and a set of 410 tires are 33x18.5 15 truck is a 70 short bed step side thats 4link and back half 3600 lbs thanks |
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02-22-2009, 06:48 PM
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#9 |
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Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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Re: Check my combo,please
a lot
1000 on guts alone
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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02-22-2009, 09:41 PM
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#10 |
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Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: Check my combo,please
I would hope that you had a plan and an idea of what kind of power you were shooting for before you spent that kind of money on a serious motor like that.
Sick combo though. I hope you have a cage. Good Luck
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83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo= Douchebag Racing: Runs Fine all the Time Last edited by Wild83C10; 02-22-2009 at 09:42 PM. |
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02-23-2009, 12:29 PM
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#11 | |
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Senior Member
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: Check my combo,please
Quote:
need more info on cam, what grind? what brand? at least LCA and Intake centerline so i can plug it into the desktop dyno |
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02-23-2009, 01:57 PM
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#12 | |
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Registered Truck Offender
Join Date: May 2008
Location: hells training ground (aka Ariz)
Posts: 3,118
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Re: Check my combo,please
Quote:
sniff, sniff,,, why does the work 'BAIT' keep coming to mind here  
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Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral. |
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02-23-2009, 09:26 PM
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#13 |
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Registered User
Join Date: Mar 2005
Location: usa
Posts: 142
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Re: Check my combo,please
its a crane intake lift is .500 exhaust 4706 adv 324 at 360 dur opens at 47.0 btdc exh 123.0 closes 97.0 abdc and 57.0 atdc thats what i got of from the cam card if you need more info ill call daven port engines thats you built it
thanks |
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02-23-2009, 09:28 PM
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#14 |
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Registered User
Join Date: Mar 2005
Location: usa
Posts: 142
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Re: Check my combo,please
grind num 324-362-19r
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02-24-2009, 09:42 AM
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#15 |
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Senior Member
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: Check my combo,please
thanks, i'll try to get to it sometime today
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02-24-2009, 04:50 PM
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#16 |
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Registered User
Join Date: May 2003
Location: Ontario
Posts: 279
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Re: Check my combo,please
Maybe you should start a new thread to carry on with this combo, THANKS
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02-24-2009, 07:29 PM
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#17 |
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Registered User
Join Date: Mar 2005
Location: usa
Posts: 142
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Re: Check my combo,please
sorry
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02-24-2009, 11:28 PM
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#18 | |
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Senior Member
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: Check my combo,please
Quote:
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
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02-24-2009, 11:41 PM
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#19 |
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Registered User
Join Date: Mar 2005
Location: usa
Posts: 142
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Re: Check my combo,please
whats your best guess i can call the enigne builder
thanks |
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