ms3 in lm7?
the 224 is a very mild cam and i'm sure it works well in mild street driven setups, but i don't care about streetability, i just want it to go down the track fast. the f13 has much better specs and is actually a possibility for me. has anyone swapped a fairly large cam into a 5.3? i've heard that 241's and 5.3 heads flow similarly and if that's true the ms3 shouldn't be too much for the heads, the only issue would be that it might peak too high which is what i'm mostly concerned about. where does the ms3 peak in an ls1? where would it peak in an lm7?
Teching In
Joined: Mar 2008
Posts: 22
Likes: 0
ms3 in lm7 im doing this, the 5.3 heads are identical to ls1 heads in flow numbers and rates, the only difference is the combustion chamber which is 61.5, instead of 66.2 hence the reason why everyone who knows anything is buying 5.3 heads for their ls1 head/cam swaps...
do the MS3 it'll blow your head off...
it unleashes the .600 lift potential of the 5.3 heads, which flow enough for 450rwhp.... STOCK! with porting and a 2.0 inch intake valve they're good for over 500rwhp
have fun and dont worry about ptv clearance, texas speed already confirmed to me that the new design requires no cutting of anything as long as you dont go crazy milling the heads
have fun blowing the doors off the competition
do the MS3 it'll blow your head off...
it unleashes the .600 lift potential of the 5.3 heads, which flow enough for 450rwhp.... STOCK! with porting and a 2.0 inch intake valve they're good for over 500rwhp
have fun and dont worry about ptv clearance, texas speed already confirmed to me that the new design requires no cutting of anything as long as you dont go crazy milling the heads
have fun blowing the doors off the competition
typically the cam's peak is dictated by the intake used. almost every ls1 cam is *forced to peak ~6,300 rpm due to the crossover intake style. the big cams will carry power 7k and beyond. an ls6 intake in your setup i think would peak about the same, possibly 6,500 at most, but easily carry power past 7k. assuming the proper tune and aftermarket rod bolts, that motor would be shifted @ 7,200 rpm and live a long time doing so. ls1 engines are known for taking that kind of abuse, so theoretically a smaller engine would deal with rpm better. get this thing on the track, i want to see some results and your feedback!
Im thinkign ill do this with my LM7 in my iroc-z. Im figureing ill buy the cam & heads, then down the road when i pick up my LS1 shortblock i can just swap the cam & heads over and be good to go.
MS3 and the 5.3L Stage 2.5 heads from TSP, think that should get me around 375rwhp, and then about 430rwhp when i go to the larger displacement
MS3 and the 5.3L Stage 2.5 heads from TSP, think that should get me around 375rwhp, and then about 430rwhp when i go to the larger displacement
The F13 cam is made by Futral Motorsports.
FMS-F13-112 FMS Custom Grind Camshaft - 230"/232" .595"/.585" 112LSA - aggressive profile with a 2500-6800 RPM range, rough idle $399.
http://www.futralmotorsports.com/fms....asp?pf=1&pg=5
It's a very nice cam, should be very streetable and make great power everywhere.
Oh I'm so stoked for my build. 
Registered User
Joined: Jan 2009
Posts: 4
Likes: 0
thanks for the info... it looks like a good cam, i'll look into it a bit more
what other mods would you guys do besides ls6 springs? im trying to do this on a bit of a budget
also, if anyone has some ls6 springs for sale, id be interested in buying some
what other mods would you guys do besides ls6 springs? im trying to do this on a bit of a budget
also, if anyone has some ls6 springs for sale, id be interested in buying some
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 would definitely run a better spring than LS6 springs! You will want to run some CC beehive springs with chromemoly pushrods at a minimum. Don't skimp on your valvetrain, it's very important stuff.
CC 918 beehive springs will work, PRC dual springs are also very good springs. I have also seen good deals for Patriot Gold spring kits.
Registered User
Joined: Jan 2009
Posts: 4
Likes: 0
i was also lookin at the TSP torquer v.2 cam... would that maybe be a little better for my truck? the specs are 232/234 duration and .595/.598 lift with 1800-6400RPM powerband and with the 112lsa the idle should be nice and choppy
I have a decent knowledge on cams, but no experience with putting them in heavy platforms. I don't want to recommend you a cam that might turn out to feel like a dog on the low end for a truck. You would be best to search some build done by truck owners and read their feedback.
I would not put anywhere that much camshaft in a 5.3L engine in a 3300+lbs F-body, even for a dedicated drag race application!
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
I currently have a stock '01 5.3 engine in my '99 SS (don't ask) with a LS1 intake and LS1 exhaust manifolds. It pulls very hard, just not on the top end like a LS1 does. It has a M6 and I can take out a stock LS1/4L60E fbody. I wouldn't be afraid at all to swap in something like a 228/232 on a 112. But I wouldn't go much bigger.
Yea, I owned a 5.3L F-body for a little while too. 228R is about the limit I'd go on it as well.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
How do you mean limit? How was the driveability of the 228R? I'm stuck between the TR224 and the 228R for my build. How much of a performance increase would the 228R see over the 224? Other mods LS6 intake manifold, ported LS1 TB, CNC ported heads, and long-tubes, just for reference.
How do you mean limit? How was the driveability of the 228R? I'm stuck between the TR224 and the 228R for my build. How much of a performance increase would the 228R see over the 224? Other mods LS6 intake manifold, ported LS1 TB, CNC ported heads, and long-tubes, just for reference.
You have to do your best to find the best balance of driveablity and power that YOU are comfortable with, everyone is different. Both the TR224 and the 228R would be good choices, with the 228R making a more hp and probably peaking a little higher, while the TR224 would likely have a little more low rpm tq.
To be clear, the 228R would be as big as I'd go for a 5.3L in a heavy car. For a 346ci+ power-plant, I'm not scared to go a bit larger because of the extra cubes!
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!