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#1
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Engine 2 Dyno w Custom 12-1 Crank Trigger, Finally Done Correctly
Not gonna get into the 1st engine build mess from a prior thread, but the actual engine aspect is finally over and done correctly. The resolution with first shop will now begin.
Here are the dyno details.. ENGINE SPECS 461ci stroker (forged) 11.7 compression Tested after pulls, cylinders 205-210psi & 3-5% leak down cold. Voodoo Hyd Roller 231/239 & 110LS and total lift with 1.65 rockers is .583/.605 KRE High Ports as cast Holley 1000cfm with 1" spacer Torker 2 (maybe ported) with flange adapter for KRE Doug's 1 7/8 headers Holley HP V5 Custom 12-1 crank trigger, we made brackets 120lb injectors (yes too huge but they idle great) PEOPLE Engine rebuilt correctly by Randy at PER in Plainfield IL Tuned by Don Bailey (he got 7% more power vs 1st tuner) RESULTS Chasis dyno 606tq and 569hp 93 Pump 34 degrees timing (Don varies increments to engine need) High 12s AFR (ratio changes to needs & Don calculates) -1.6 vacuum @ WOT After comments.... Timing with 12-1 Trigger was dead nuts vs Dual Sync issues. It's clear the intake is hurting power, not sure it's actually ported like I paid for from prior shop (sloppy). I can't believe 93 could safely do this but Don and Randy were confident I'd be fine, it appears so as spark plugs looked good too. Driving with 550tq+ from 3k rpm through 5500rpm should be fun. I guess I'm shifting at 6k rpm, no need to go higher really. Future... Cars setup for ethanol so I'll do an E map with Don and run E30 to save the $1 per gallon over 93. Possible dyno session to see if E added any power and try a tunnel ram filter base idea vs 3" air cleaner.
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69 GTO Convertible, 4000lbs 462ci, 606tq/569hp - 93 oct @ 34 deg (207psi) 11.7:1, KRE H Ports, Lunati HR 282/290 w Johnson Lifters & 1.65 Scorp, E30, EFI, Holley HP + Dual Sync, 12-1 Crank Trig, 120lb Inj & 1000cfm TB, Torker II EFI Int & Rails, PTC 10", Ricks SS Gas Tank, Magna 4303, Aerom EFI Reg, Aero Front & Wilwood Rear Disc Brakes, Dougs 1 7/8" & Borla Pro XS 3", Alum Rad & Dual Fans, 12:1 Box, UMI Arms & Viking Berz Fr + Rear CO Shocks, Hella UP28 Vac Pump, 12 Bolt, 3.73, 33 Spline |
The Following 3 Users Say Thank You to GOAT8U2 For This Useful Post: | ||
#2
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Congrats!
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#3
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Nice power for that size cam!
If you end up doing that possible dyno session and have 1.5 rockers I would love to see you try a pull with them on the exh only.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#4
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Quote:
Is the injection batch or sequential? Yes something in the intake track is holding it back -1.6 vacuum @ WOT is to much. Stan
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Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#5
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Looks more like an engine Dyno than a chassis dyno
Sent from my SM-S901U using Tapatalk |
The Following User Says Thank You to 70GS455 For This Useful Post: | ||
#6
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Excellent!
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#7
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That's impressive.
What trans / convertor? |
#8
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Hahaha, I meant engine dyno and for some reason said chasis dyno. WTH
I've heard others say to go smaller on the exhaust rockers, I'm missing something here since you'd assume more lift should be more flow but there's probably variables and velocity aspects I'm not aware of. Tuner Don changed the fuel and ignition in HP so when I get the tune out of HP I'll know which ones. If I remember correctly he wasn't real excited to see the original tune was not setup correctly and he had to start from scratch and get all the math and voltage etc dialed in. He knocked it out exactly how you'd want in the end. Still have the TH400 but with the 10" PTC 0 stator and it came in at mid 3% slippage.
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69 GTO Convertible, 4000lbs 462ci, 606tq/569hp - 93 oct @ 34 deg (207psi) 11.7:1, KRE H Ports, Lunati HR 282/290 w Johnson Lifters & 1.65 Scorp, E30, EFI, Holley HP + Dual Sync, 12-1 Crank Trig, 120lb Inj & 1000cfm TB, Torker II EFI Int & Rails, PTC 10", Ricks SS Gas Tank, Magna 4303, Aerom EFI Reg, Aero Front & Wilwood Rear Disc Brakes, Dougs 1 7/8" & Borla Pro XS 3", Alum Rad & Dual Fans, 12:1 Box, UMI Arms & Viking Berz Fr + Rear CO Shocks, Hella UP28 Vac Pump, 12 Bolt, 3.73, 33 Spline |
#9
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Very nice build! Great info. Really interesting combo of compression ratio/cam/pump gas. Good job sticking with it, should be a LOT of fun. Mine made peak power at almost the same rpm, I've been shifting at 5800 and getting my best et's.
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Chris D 69 GTO Liberty Blue/dark blue T400, 9" w 3.50s, 3905lbs 461, 850 Holley, T2, KRE 310s, Comp HR288 w 165s, RA manifolds, 11.60@114, 1.58/60 The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60' |
#10
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I’m Suprised a high port Motor needed 34* timing on pump gas maybe it’s camshaft related or efi related?
My 511 11:1 liked 28-29 w 330 kres Different 400 hiports on my 540 13:1 on race gas and I’m In the low 30s both carbed but wildly different camshafts Might be some Power and safety moving lower
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
#11
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Very nice build! Great numbers should be a fun ride!
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Jim Moshier 1971 Grand Prix 462ci SD Performance 6x heads 1962 Catalina 389 1968 Firebird 400-455 I haven't decided "If we ever forget that we're one nation under GOD, then we will be a nation gone under." - Ronald Reagan |
#12
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Ok, engine dyno.
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#13
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Cool build! Great numbers with such a small cam
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Holley Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#14
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Another Voodoo cam success story, like was already said those are very impressive numbers and an impressive torque curve for a 231/239 @.050 hyd roller.
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Tim Corcoran |
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