Whats your thoughts on this swap?
TECH Apprentice
Joined: Apr 2019
Posts: 365
Likes: 133
From: California
You can't go wrong with a 5.7 NA and a mild cam. The LS1 in my '01 Camaro has plenty of low end grunt with the ported 243s and mild cam that I run in it. I left the idle in Park and neutral stock and raised it to 600 rpms in gear and it gets near stock gas mileage.
TECH Senior Member
Joined: Jun 2016
Posts: 22,295
Likes: 3,617
From: Central Cal.
SoCalDave- Do you have any problems smogging your car with a non stock cam? I know all they do now is plug into the OBDII plug, but is there any way even a mild cam can throw a code? I guess I'm mainly curious as to whether the MAF/MAP, TPS, or O2 readings change enough to throw a code.
Sorry for hijacking your thread to ask a question, Kfxguy!
Sorry for hijacking your thread to ask a question, Kfxguy!
TECH Senior Member
Joined: Jun 2016
Posts: 22,295
Likes: 3,617
From: Central Cal.
TECH Apprentice
Joined: Apr 2019
Posts: 365
Likes: 133
From: California
SoCalDave- Do you have any problems smogging your car with a non stock cam? I know all they do now is plug into the OBDII plug, but is there any way even a mild cam can throw a code? I guess I'm mainly curious as to whether the MAF/MAP, TPS, or O2 readings change enough to throw a code.
Sorry for hijacking your thread to ask a question, Kfxguy!
Sorry for hijacking your thread to ask a question, Kfxguy!
I didn't have a problem smogging my car at the end of 2020, but the law changed again to a modified tune will mean a failed smog test. So I'm caught between putting my '01 Camaro back to stock with a stock tune or find someone that knows someone. I'll have to smog again in early 2022, so I have time to see if the smog test looks for only certain things that were changed or if the test looks for everything that has been changed.'
I do have HP Tuners
I was just watching one of holdener's videos and it was on the 500hp combinations. The 5.7 with ported heads and a 212/218 cam made a little over 500hp and a 5.3 with ported heads took 233/250 duration camshaft to break 500hp.
5.3 stock bottom end
trick flow 220 heads
233/250 cam 113 lsa
high ram intake, dual throttle bodies
503hp 409 ftlbs
***** he said he had another combo that made the same power with a little smaller cam and a fast intake. He didnt say what size cam, but probably the 227/233ish cam
5.7 stock bottom end
212/218 114 lsa
dart pro 1 cnc ported
older fast intake 78mm opening
507hp 472ftlbs
interesting.....I didnt think there was that much of a gap between the two displacements...
5.3 stock bottom end
trick flow 220 heads
233/250 cam 113 lsa
high ram intake, dual throttle bodies
503hp 409 ftlbs
***** he said he had another combo that made the same power with a little smaller cam and a fast intake. He didnt say what size cam, but probably the 227/233ish cam
5.7 stock bottom end
212/218 114 lsa
dart pro 1 cnc ported
older fast intake 78mm opening
507hp 472ftlbs
interesting.....I didnt think there was that much of a gap between the two displacements...
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo I guess so. Hindsight is 2020 and I wish I had waited to buy parts when I built my engine. I thought the 5.7 was hurt worse than it was so I started building the 5.3 before I had the 5.7 pulled. Knowing what I know now, I could have just built the 5.7 from the get go. O well, this hobby is a waste of money anyways. And it’s pretty cool I scored the same pistons and rods I would have bought, for literally no money. Just a little bit of labor.
Here's why.
Looking at a moving piston animation, we can see several degrees of rotation occur after bottom before the piston barely moves.
The air moving into the cylinder has some momentum and will keep moving into the cylinder briefly even after bottom dead center is reach. Delaying intake valve closing slightly allows a little more air into the cylinder.
The piston isn't moving up enough for several degrees of rotation after bottom dead center to change the direction of the air and push it back out the intake valve.
Carried to excess closing the intake valve would be bad as there of course is a point the piston could push air out if the intake valve is left open too long.
TECH Addict
Joined: Aug 2005
Posts: 2,305
Likes: 126
From: Monroe,NY
The 5.7 should have been a truck option back then. To me the 5.7 is the best overall of the Gen 3 engines. Almost the same power as the 6.0 but better gas mileage and more torque and hp than the 5.3 and probably would have done the same mpg or better. The 5.7 has a pretty big gap on the 5.3 and also going by all the dyno #'s i have seen seems to be right there with the 6.0.
The 5.7 should have been a truck option back then. To me the 5.7 is the best overall of the Gen 3 engines. Almost the same power as the 6.0 but better gas mileage and more torque and hp than the 5.3 and probably would have done the same mpg or better. The 5.7 has a pretty big gap on the 5.3 and also going by all the dyno #'s i have seen seems to be right there with the 6.0.
TECH Senior Member
Joined: Jun 2016
Posts: 22,295
Likes: 3,617
From: Central Cal.
LS1Tech Sponsor
Joined: Jan 2008
Posts: 2,233
Likes: 1,523
From: Ohio, Georgia, Nevada, Texas
We have some new cams about to arrive...more truck sized with earlier intake closings and overlaps that would work well with what you are doing. We can't release specs yet, but if you can wait 6 weeks max...you may find it very worth it.
how’s the price going to be on those smaller cams? The ls6 power max is a steal at $239
you can pm me if you like….
TECH Senior Member
Joined: Jun 2016
Posts: 22,295
Likes: 3,617
From: Central Cal.
SOMEDAY I will need to go through my Tahoe's LM7, and would like a cam with a bit more from the bottom to top of the powerband, and not throw any codes so it will pass smog...
One such existent cam is BTR's Torque truck cam. Anything along those lines will be looked at.
My natural and prodigious curiosity is piqued....
SOMEDAY I will need to go through my Tahoe's LM7, and would like a cam with a bit more from the bottom to top of the powerband, and not throw any codes so it will pass smog...
One such existent cam is BTR's Torque truck cam. Anything along those lines will be looked at.
SOMEDAY I will need to go through my Tahoe's LM7, and would like a cam with a bit more from the bottom to top of the powerband, and not throw any codes so it will pass smog...
One such existent cam is BTR's Torque truck cam. Anything along those lines will be looked at.
TECH Senior Member
Joined: Jun 2016
Posts: 22,295
Likes: 3,617
From: Central Cal.
I appreciate your concern, though... besides, I'm in Commiefornia.
Such a dastardly improvement is surely illegal on a such humble machine as mine....
TECH Senior Member
Joined: Jun 2016
Posts: 22,295
Likes: 3,617
From: Central Cal.
Speaking of which, one thing I think should happen to C.M. truck cams is to narrow their LSA a few degrees, after I saw what that does to the BTR Truck Torque cam with its 111LSA on a 202/202 profile. Torque added to below 2500, more than I've seen with any other truck cam.