Figuring out cam to go with PRC 2.5 5.3L heads?
#1
Figuring out cam to go with PRC 2.5 5.3L heads?
I know, I know that the MS3 makes excellent power with these heads, but from personal experience I didn't like the cam. I personally didn't have it my car but I have a buddy that ran with one and he didn't like the cam putting enough TQ down. I was thinking about going with the LG G5x3? What do you guys think?
#2
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i can see the downside to the ms3 on the street. u will definitely suffer in the lower rpm range. u want a cam that will produce usable power on the street where u will be doing most of your driving. if its strictly a track car, ms3 all the way. i just ordered those heads with the tsp 228r cam. it produces higher hp and torque than the 224, and from what ive heard, driveability and street manners are almost identical. im a huge fan of the 224 cams. anyway, just some food for thought
Last edited by Raise; 07-22-2007 at 05:54 PM.
#6
https://ls1tech.com/forums/dynamometer-results-comparisons/712347-prc-stage-2-5-5-3-heads-488-rwhp-428-rwtq.html
Joe form here in amarillo is running G5x3 and this is his car ^^^^^^
Joe form here in amarillo is running G5x3 and this is his car ^^^^^^
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#8
I talked to LG and I asked them the PTV question and said it would fit without flycutting. I don't think it would be necessary because the MS3 are almost the identical size, right? I'm actually a A4 and go to strip once and a while.
Originally Posted by rickyracer25
https://ls1tech.com/forums/showthread.php?t=712347
Joe form here in amarillo is running G5x3 and this is his car ^^^^^^
Joe form here in amarillo is running G5x3 and this is his car ^^^^^^
#10
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Maybe you should
https://ls1tech.com/forums/generation-iii-internal-engine/731216-texas-speed-prc-5-3l-stage-2-5-heads-what-cam.html
That thread has over 150 posts on this topic.
https://ls1tech.com/forums/generation-iii-internal-engine/731216-texas-speed-prc-5-3l-stage-2-5-heads-what-cam.html
That thread has over 150 posts on this topic.
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Also check the link in my signature for details on a "Street Sweeper" camshaft from New Era Performance. The specs are 236/242 duration, .605"/.609" lift, 110 or 112 LSA. I think you would like that cam with your set-up
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Originally Posted by chae
Also check the link in my signature for details on a "Street Sweeper" camshaft from New Era Performance. The specs are 236/242 duration, .605"/.609" lift, 110 or 112 LSA. I think you would like that cam with your set-up
EDIT: I see your putting this on a set of stock 241 heads, good luck. Post your results.
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Originally Posted by MVDCGTO
The Streetsweeper cam is actually designed by Flowtech Industries and only sold through New Era, fyi. Its a nice cam but the guy who designed it told me that it requires better heads to support it. I mean anything can be made to run and run reasonably well but I rode in a car with that cam, a set of ET 225 heads and all the fixins. He put down 475rwhp and 430ish torque but it was alot of top end hp, not much down low. Sweet highway setup for sure.
EDIT: I see your putting this on a set of stock 241 heads, good luck. Post your results.
EDIT: I see your putting this on a set of stock 241 heads, good luck. Post your results.
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Originally Posted by chae
It will be going in next spring/summer and has put down 400+ RWHP on stock heads in the past. I will likely upgrade to a set of ported LS6 heads in the future.
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Originally Posted by 00 Freak
I talked to LG and I asked them the PTV question and said it would fit without flycutting. I don't think it would be necessary because the MS3 are almost the identical size, right? I'm actually a A4 and go to strip once and a while.
well if your an A4 and u have a stall, u dont have to worry bout down low, cuz the verter and gearing will take care of that!!
#16
just a side note he had to fly cut in fact he got the heads in and put them on went to check the PTV turned the motor over with a breaker bar and acutally bent a valve so......
#17
Originally Posted by chae
Maybe you should
https://ls1tech.com/forums/showthread.php?t=731216
That thread has over 150 posts on this topic.
https://ls1tech.com/forums/showthread.php?t=731216
That thread has over 150 posts on this topic.
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Originally Posted by 00 Freak
Sometimes my search doesn't work actually a lot of times, DICK! But it did today. Well what I got was kind of confusing for me. Sinc TSP changed their valves sizes it's willing to accept a lil larger cam. Even though LG is not giving their duration on the G5x3, the lift is similar to the MS3. x3 is lil lighter on the intake side but a hair more on the exh. But that still doesn't matter. For guys that went with MS3 with these heads did you actually check you PTV clearance with the new valve size? I wish I knew the duration on the LG cam so I could make this decision.
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MS3 is the largest cam that won't require flycutting according to Jon at Texas Speed.
The G5X3 will require flycutting. I wouldn't want to buy a camshaft that I didn't have the exact specifications on anyways
The G5X3 will require flycutting. I wouldn't want to buy a camshaft that I didn't have the exact specifications on anyways
#20
Originally Posted by chae
MS3 is the largest cam that won't require flycutting according to Jon at Texas Speed.
The G5X3 will require flycutting. I wouldn't want to buy a camshaft that I didn't have the exact specifications on anyways
The G5X3 will require flycutting. I wouldn't want to buy a camshaft that I didn't have the exact specifications on anyways