Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2064287
04/29/16 09:48 PM
04/29/16 09:48 PM
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Joined: Jan 2003
Posts: 14,539 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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The "512" that's really a 505, if you go by what they said the bore and stroke is(4.350 x 4.250).
Based on what they said the lift was going to be(mid-.600's as I recall) my guess is it's either going to get higher than stock rocker ratio, or is using a "hydrid" lobe design that's really a solid roller profile that can be run with hyd roller lifters....... Or maybe both.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Power Nation/Engine Power 512?
[Re: fast68plymouth]
#2064358
04/29/16 11:18 PM
04/29/16 11:18 PM
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Joined: Dec 2013
Posts: 4,806 Wichita
GY3
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master
Joined: Dec 2013
Posts: 4,806
Wichita
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The "512" that's really a 505, if you go by what they said the bore and stroke is(4.350 x 4.250).
Based on what they said the lift was going to be(mid-.600's as I recall) my guess is it's either going to get higher than stock rocker ratio, or is using a "hydrid" lobe design that's really a solid roller profile that can be run with hyd roller lifters....... Or maybe both. Yep. I was yelling at the tv. "IT'S A 505 YOU IDIOTS! Surprising since the older dude is pretty sharp. They skipped a week and run a pig of a 390 Ford this last episode...
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Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2064556
04/30/16 08:38 AM
04/30/16 08:38 AM
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Joined: Feb 2009
Posts: 1,723 Nebraska
70VcodeCoronetRT
top fuel
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top fuel
Joined: Feb 2009
Posts: 1,723
Nebraska
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If I remember right it was in the .660 lift range. Didn't catch duration. But I'm old and forgetful too.
Last edited by 4406forPOWER; 04/30/16 08:38 AM.
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Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2064721
04/30/16 02:35 PM
04/30/16 02:35 PM
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Joined: Jan 2003
Posts: 14,539 So. Burlington, Vt.
fast68plymouth
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I Live Here
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Yeh, one of my buddies was mentioning the 390 ford was kind of a mutt for the sum of the parts that were used. They did a 350 Pontiac last year that was also pretty weak.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2064811
04/30/16 04:58 PM
04/30/16 04:58 PM
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Joined: Jan 2003
Posts: 14,539 So. Burlington, Vt.
fast68plymouth
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What would make what I would consider an interesting episode is to take one of these previous underwhelming builds and do some old school hop up mods to get the numbers up. Take that 350 Pontiac, put in a bigger cam, pocket port the heads, different intake manifold, etc. something other than just putting a set of edelbrock heads on it. Maybe rework the stock heads, then install the edelbrock heads afterward to see how much better they are.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2065183
05/01/16 11:48 AM
05/01/16 11:48 AM
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Joined: May 2005
Posts: 1,031 ohio
67mprfan
super stock
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super stock
Joined: May 2005
Posts: 1,031
ohio
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I wish my projects only took a 1/2hr to complete.... Can they said was 646/672
71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it. 67 Belvedere that worked it's way in the 10's
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Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2065271
05/01/16 02:21 PM
05/01/16 02:21 PM
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Joined: Jan 2003
Posts: 14,539 So. Burlington, Vt.
fast68plymouth
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I Live Here
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Posts: 14,539
So. Burlington, Vt.
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While I was watching the show I was thinking a carb would have made more power, but didn't think they'd try it.
The throttle response of the efi didn't look too good.
My guess for why it made less power is the a/f ratio the efi was chasing wasn't optimum for that combo and the carb was just closer to being "right".
It's a different dyno, so a true apples to apples comparison it's not..... But I tested a street 505 last fall. Rpm heads with a little clean up(way less flow than the TF's), xs290s solid cam with 1.5's, 6bbl. Made 645tq/590hp.
I would have thought with the TF heads and intake manifold it would have made closer to 650hp, not to mention the extra .100 lift from the hyd roller they used.
I suppose with the carb on it the numbers were pretty close to what I would have expected, and the difference could just be the dyno.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Power Nation/Engine Power 512?
[Re: GY3]
#2065286
05/01/16 02:48 PM
05/01/16 02:48 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
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State of confusion
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Carb did much better than the FiTech fuel injection.
Thoughts on that? CARBS RULE............Don`t tell Monte that...........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Power Nation/Engine Power 512?
[Re: 451Mopar]
#2065303
05/01/16 03:20 PM
05/01/16 03:20 PM
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Joined: Jan 2003
Posts: 17,928 Akron, Ohio
ProSport
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I Live Here
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Akron, Ohio
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I watched that this morning, loved the overhead view of the FiTech at full throttle but it was definitely down on power compared to the carb. I wonder how much tuning was done with the FiTech.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Power Nation/Engine Power 512?
[Re: ProSport]
#2065312
05/01/16 03:35 PM
05/01/16 03:35 PM
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Joined: May 2005
Posts: 1,031 ohio
67mprfan
super stock
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super stock
Joined: May 2005
Posts: 1,031
ohio
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I watched that this morning, loved the overhead view of the FiTech at full throttle but it was definitely down on power compared to the carb. I wonder how much tuning was done with the FiTech. I don't think they did any tuning just a timing change because they said the EFI was self learning.
71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it. 67 Belvedere that worked it's way in the 10's
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