tb30570

I'm still planning my mods, and one thing I need to decide is the type of cam. I want good idle, good vacuum and good high-rpm power.

I've been looking at cams with mild duration, high lift and high lobe separation. I beleive this is what I need to look for to acheive my goals above (please let me know if I'm heading the wrong direction).

I plan on running the cam on an LS1 w/ LS6 intake and heads (with upgraded springs), long tube headers w/ x-pipes and a tune.

These are the cams I'm looking hardest at:
Texas 25-220R 220i 220e 0.581i 0.581e 114
Texas 25-224XE 224i 224e 0.566i 0.566e 114
Texas 25-224R 224i 224e 0.581i 0.581e 114

I'd also consider these cams, but it seems that one of specs is a little lower/high than what I need.
Lunati 55004LUN 221i 221e 0.558i 0.558e 114 low lift
Comp 54-444-11 224i 230e 0.581i 0.588e 114 high duration
Patriot 8421 225i 229e 0.580i 0.590e 114 high duration
Texas 25-228R 228i 228e 0.588i 0.588e 114 high duration

Am I looking at the right cam specs for the goals I listed at the begining? Which cam would you recommend, and why?

thanks!

garygnu

I like the TSP 224r.you can get a custom cam from TSP,look at their cam page.

SOMbitch

iTrader: (8)

With a good tune any of those cams will have a mild idle with the 228 being the roughest. It should also make the highest peak power with the comp and patriot only a few ponies behind. All will have plenty of vacuum for brakes etc... Mine is slightly bigger (230/234 .612/598 111+2 LSA) and has gobs of bottom and is a great DD. I don't think you are looking for the lope mine has though. Any of those cams will fit the bill but I would go with one of the bigger ones on your list or you will be wanting more soon when you see how smooth these cars are with a decent sized cam. Way more guys on here wish the had gone bigger than vice versa...

tb30570

yeh, that's one thing I liked about Texas cams, I could specify a high lobe sep angle on any cam.

how well does the 224 idle?

tb30570

I would have guessed the Texas 25-228R would have made more power. Does the exhaust duration increase power more than intake duration? Does one effect idle more than the other?

tb30570

I think I figured it out. I found a forum post about dual-pattern cams.

BOBCRMAN@aol.com-------------------------------------------------------
The dual pattern cam mentioned works well with a street exhaust system. Holding the exhaust valve open longer evacuates the cylinder better. Also does not effect idle quality and retains good intake vac.

tb30570

If I went with a custom grind from Texas, do think this grind would work well? Again, I want a good idle, good vacuum and good high RPM power.

Comp Custom-Grind LS1 224i 236e 0.581i 0.602e 114

orangeapeel

iTrader: (18)

Nothing wrong with that cam. Just remember there are endless possibilites when it comes to selecting the right cam. I'm glad you are looking at more than just 2 that are nothing alike.

tb30570

bumper

tb30570

bumper

Randy@RaginRacin

iTrader: (4)

Our Stinger Cam 224/232 113 is a mild cam with very good drivability. It is our most popular camshaft for the LS1, 2.& 3. We have many results on our website and youtube page.

raginracin.com
http://www.youtube.com/user/RaginRacin1

tb30570

https://ls1tech.com/forums/sponsor-s...mshaft-gp.html

Do you sell springs in a package with the cam?

I assume you were suggesting the RR-Stinger Cam?
RR-Stinger Cam 224/232 113 0.625/0.625

Does the following cam work with LS1's? How does the engine idle with this cam?
RR-LS3 224/240 113 0.625/0.625

chevy0128

i just put in a comp cam 224/230 114 and it made 400rwhp with a lid and LT's . Its my daily driver and i cannot even tell a difference in the driving, untill i floor it. Perfect cam for ME. If you have any questions about this cam or waant to see the graph let me know.

hammertime

iTrader: (1)

4-6 degrees of split in the exhaust is more common for higher rpm gains, and should work fine with your plans for headers and an X-pipe. Using 12 degrees is a lot more than optimal, and will leave you with an early opening exhaust valve, possibly costing you power...

Your proposed cam has 2* overlap, while a 224/228 113 cam has the same overlap, but opens the exhaust valve 4-5 degrees later.

Detoxx03

iTrader: (14)

I think Futral Motorsports has a few cams that offer what you are looking for

tb30570

Based on your comments, I assume you would recommend any of the following cams?

Comp Custom-Grind LS1 224/228 0.581/0.602 113 overlap=0
Comp 54-444-11 224/230 0.581/0.588 114 overlap=-1
Patriot 8421 225/229 0.58/0.59 114 overlap=-1

I found the forumla for overlap:
2*(((DURi+DURe)/4)-LSA)

I found a pretty good article on overlap:
http://www.chevyhiperformance.com/te...ing/index.html

orangeapeel

iTrader: (18)

those big splits are usually for a 400 shot drag car. Any of those 3 you listed would be just fine IMO.

Bjorne043

iTrader: (1)

My 228R 112 has a pretty nasty idle to it which I love!

hammertime

iTrader: (1)

All good choices, you wouldn't know the difference between them.

tb30570

there is some cost difference.

Comp Custom-Grind LS1 224/228 0.581/0.602 113 overlap=0
$374 + $162 (26918-16 springs) + $49 (774-16 retainers)
$585 total

Comp 54-444-11 224/230 0.581/0.588 114 overlap=-1
$346 + $162 (26918-16 springs) + $49 (774-16 retainers)
$557 total

Patriot 8421 225/229 0.58/0.59 114 overlap=-1
$280 + $162 (26918-16 springs) + $49 (774-16 retainers)
$491 total

FMS FM-F7-114 224/230 0.588/0.595 114 overlap=-1
$339 + $162 (26918-16 springs) + $49 (774-16 retainers)
$550 total