Horsepower TV cam
"Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhh", Hey Kid, who the hell said anything about buying this cam? It was an interesting segment about an engine dyno, not even about the cam. And by the way, YO, stop capitalizing every word and using that stupid *** hip hop slang. This is LS1Tech not MTV.
Yah this coming from the guy who was impressed with 60's tech?! Keep watchin' TV you old fart...You know it must suck to be impressed with technology that is as old as you but makes you seem like A TOTAL NOOB!
Originally Posted by 2000TransAmWS6
i think the theory behind the 4/7 swap is to change when the air pulses in the intake occur to get better air movement through the intake manifold. it is something that they tried in Nascar many years ago and got outlawed.
Originally Posted by Cantalope Kid
Yah this coming from the guy who was impressed with 60's tech?! Keep watchin' TV you old fart...You know it must suck to be impressed with technology that is as old as you but makes you seem like A TOTAL NOOB!
On The Tree
Joined: Oct 2005
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Originally Posted by Cantalope Kid
Yah this coming from the guy who was impressed with 60's tech?! Keep watchin' TV you old fart...You know it must suck to be impressed with technology that is as old as you but makes you seem like A TOTAL NOOB!
the ZL1 and L88 motors flat out impress me whole heartedly...60's technology or not, for a stock production motor, that beats out the LS7 in terms of pure raw unadultered power.
Asmodeus, you are correct in your thinking. A standard 4/7 swap will not net 30hp in the real world. As pointed out, most gains are small, but rather repeatable. As stated this is not a viable option for your daddy's '71 Corvette- it's an all out race tactic.
Ben T.
Ben T.
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Originally Posted by ArcticZ28
The 4/7 swap is actually to change the exhaust pulse contention in the primaries as they reach the merge. Before the 4/7 swap, you have two exhaust pulses coming at relatively the same time and fighting for the same space in the exhaust manifolds, thus creating backup and reversion. By swapping the 4/7, there is no longer contention and each back is only sending one exhaust pulse at a given time.
Birthday:
July 14, 1980
Location:
San Antonio, TX
Occupation:
State Farm Insurance-Sales Rep.
Wow, I was expecting you to be around 12, MAYBE 13, quit being a tool and whoring someone elses thread. Oh, and before you start calling me an old fart, you have 5 years on me, and I bet I've forgotten more about these cars than you know. My Horn <-- toot, toot. That 60's tech, you know, pushrod V8's, well what do you think the LSX series motors are?
July 14, 1980
Location:
San Antonio, TX
Occupation:
State Farm Insurance-Sales Rep.
Wow, I was expecting you to be around 12, MAYBE 13, quit being a tool and whoring someone elses thread. Oh, and before you start calling me an old fart, you have 5 years on me, and I bet I've forgotten more about these cars than you know. My Horn <-- toot, toot. That 60's tech, you know, pushrod V8's, well what do you think the LSX series motors are?
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Thread Starter
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From: Los Angeles
Would changing the #4 and #7 firing order work on the LS1 given the man problems people have had with the #7.
https://ls1tech.com/forums/generation-iii-internal-engine/455286-how-many-you-guys-have-lost-number-7-a.html
https://ls1tech.com/forums/generation-iii-internal-engine/455286-how-many-you-guys-have-lost-number-7-a.html
Originally Posted by ArcticZ28
The 4/7 swap is actually to change the exhaust pulse contention in the primaries as they reach the merge. Before the 4/7 swap, you have two exhaust pulses coming at relatively the same time and fighting for the same space in the exhaust manifolds, thus creating backup and reversion. By swapping the 4/7, there is no longer contention and each back is only sending one exhaust pulse at a given time.
Sounds like you took that right out of a fluid dynamics lecture!
Originally Posted by SSDude
Would changing the #4 and #7 firing order work on the LS1 given the man problems people have had with the #7.
https://ls1tech.com/forums/showthread.php?t=455286
https://ls1tech.com/forums/showthread.php?t=455286
The LS1 ALREADY HAS the 4/7 and 2/3 firing order swap from the SBC.
LS1: 1-8-7-2-6-5-4-3
SBC: 1-8-4-3-6-5-7-2
Originally Posted by Marc 85Z28
You'd think with that many mods you would know the firing order of an LS1
The LS1 ALREADY HAS the 4/7 and 2/3 firing order swap from the SBC.
LS1: 1-8-7-2-6-5-4-3
SBC: 1-8-4-3-6-5-7-2
The LS1 ALREADY HAS the 4/7 and 2/3 firing order swap from the SBC.
LS1: 1-8-7-2-6-5-4-3
SBC: 1-8-4-3-6-5-7-2
Originally Posted by 98Camarod
I think they also did the 4/7 swap on the ls1 camaro they had that they supercharged.
