Speed Inc Cams
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TECH Regular
Joined: Aug 2005
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Speed Inc Cams OK.. asked in another thread (sorta)... but wondering now if I ordered what I want. It was recommended that I get the SI5 http://www.ls1speed.com/catagory.cfm...in%20/%20Heads
However, notice that these numbers are significantly lower than Trex--MS3 or MS4....
So does anyone have a Speed Inc grind? Driveability? This will be driven in traffic now and then and I will be keeping stock heads for now....
However, notice that these numbers are significantly lower than Trex--MS3 or MS4....
So does anyone have a Speed Inc grind? Driveability? This will be driven in traffic now and then and I will be keeping stock heads for now....
Check this thread out. I'm getting this cam too. Heads next year.
https://ls1tech.com/forums/dynamometer-results-comparisons/699122-dyno-results-cam-231-237-a.html
Also, people get this cam confused with the old TSP 231/237 which was a Lunati cam. This cam is a Comp Cam with healthier lobes.
https://ls1tech.com/forums/dynamometer-results-comparisons/699122-dyno-results-cam-231-237-a.html
Also, people get this cam confused with the old TSP 231/237 which was a Lunati cam. This cam is a Comp Cam with healthier lobes.
TECH Fanatic
iTrader: (7)
Joined: Dec 2003
Posts: 1,305
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From: Las Vegas, from Crystal Lake IL
i have the SI5 231/237 on my cam only all bolton 2001 z28 m6. stock heads
dynoed with airfilter
418
392
without airfilter
432
404
as far as saying if the cam is great for a DD, thats all personal opinion. Plus my car is not a DD.
the cam is extremely smooth and not peaky either, sounds mean and pulls very hard!
dynoed with airfilter
418
392
without airfilter
432
404
as far as saying if the cam is great for a DD, thats all personal opinion. Plus my car is not a DD.
the cam is extremely smooth and not peaky either, sounds mean and pulls very hard!
Thread Starter
TECH Regular
Joined: Aug 2005
Posts: 455
Likes: 0
Originally Posted by ibanez7
i have the SI5 231/237 on my cam only all bolton 2001 z28 m6. stock heads
dynoed with airfilter
418
392
without airfilter
432
404
as far as saying if the cam is great for a DD, thats all personal opinion. Plus my car is not a DD.
the cam is extremely smooth and not peaky either, sounds mean and pulls very hard!
dynoed with airfilter
418
392
without airfilter
432
404
as far as saying if the cam is great for a DD, thats all personal opinion. Plus my car is not a DD.
the cam is extremely smooth and not peaky either, sounds mean and pulls very hard!
TECH Fanatic
iTrader: (7)
Joined: Dec 2003
Posts: 1,305
Likes: 1
From: Las Vegas, from Crystal Lake IL
mods all bolt-ons and stock heads.
when i did the cam swap, I also replaced the oil pump, switched to a double roller timing chain, swapped springs, and pushrods.
if your car is a daily driver I would NOT go with the SI6 or SI7. reason being:
1. the SI5 is not much of a daily driver cam
2. SI6 or 7 you will have to check for PTV clearance.
3. smaller cams are more fun for daily driving.
4. larry at speed inc. will tell you the same thing, he prefers to sell/put in the SI3 possibly the SI4 for daily driver cars
again some of this comes down to personal preference.
Also your car is a 2000, make sure you get a ls6 intake.
when i did the cam swap, I also replaced the oil pump, switched to a double roller timing chain, swapped springs, and pushrods.
if your car is a daily driver I would NOT go with the SI6 or SI7. reason being:
1. the SI5 is not much of a daily driver cam
2. SI6 or 7 you will have to check for PTV clearance.
3. smaller cams are more fun for daily driving.
4. larry at speed inc. will tell you the same thing, he prefers to sell/put in the SI3 possibly the SI4 for daily driver cars
again some of this comes down to personal preference.
Also your car is a 2000, make sure you get a ls6 intake.
Trending Topics
Another vote for the SI5. I don't have mine tuned yet (May 9th), but on my old tune it gets around town pretty well, the cold starts are rough though. My car is an A4 & I am very sure that after the tune, it will drive pretty normal. The cam seems to have plenty of mid range & the dyno graphs that I have seen are real nice looking.
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