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#41
04-09-2024, 11:48 AM
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Factoring no mechanical issues with the motor, Track time is a better indicator of power since he already has a reference point if the car is basically the same.
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 1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds |
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#42
04-09-2024, 12:06 PM
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True!
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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! |
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#43
04-10-2024, 04:00 AM
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Well the leak down test was anywhere from 4 to 13%. Nothing going on internally. I will try and do a compression test today.
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 A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#44
04-10-2024, 06:53 AM
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If the only changes were cam, rods and heads, I'd say the combo needed tuned to those new changes? Intake specs to work with the heads, carb change to work with the new specs, cam wrong for head specs etc.?
What was the afr, bsfc, rpm range etc? 
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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 |
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#45
04-10-2024, 09:16 AM
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Quote:
I believe the heads were direct replacements for the original KRE heads that cracked. I'd be looking to see if the porting program was changed to prevent the cracking issue. This problem was in a critical area of the port. Could easily knock down the power numbers considerably. |
| The Following User Says Thank You to PAUL K For This Useful Post: | ||
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#46
04-10-2024, 10:37 AM
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Thanks, I thought with the heads they were ported for more flow than previously. (why he changed the cam also)
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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 |
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#47
04-10-2024, 12:57 PM
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Good call by Paul. That would suck if thats the case. The High Ports gotta be paper thin at 430. Hate to say, but maybe move your program into the "Super Wedge head" territory. Your easily at that level.
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#48
04-10-2024, 01:49 PM
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JMO It is the new cam.
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 |
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#49
04-10-2024, 02:22 PM
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I talked to Jeff yesterday he said that the new port program shouldn't have hurt it. We all know how that goes.
__________________
A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#50
04-10-2024, 02:39 PM
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I changed the cam hoping to pick up a little.
__________________
A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#51
04-19-2024, 12:48 PM
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Any new updates?
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#52
04-19-2024, 04:34 PM
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Hey Darby. Im going to the put motor in and run it. We will see what happens.
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A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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