OK, rate my cam
Thread Starter
Launching!
Joined: Nov 2004
Posts: 243
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OK, rate my cam The cam I have in my turbo set up is an NA cam, obviously not very good for FI (in my case turbo). I am considering having a custom turbo cam made, but I am not sure if it would be worth the money and downtime for the install. I will tell you a little about my current set up and cam and I would like opinions to see if it really sucks, or if I can get away with using it untill I do an engine rebuild.
Also, I will include my current dyno numbers (but I have added a larger TB, injectors, alchy injection, and will be upping the boost about 1-2 more lbs once I can get in for tuning etc) and I would appreciate an educated guess as to what my numbers would be if I added a custom somewhat aggressive turbo Cam.
current numbers: 561 rwhp and 465 torque
Cam numbers: 220 intake 230 exhaust, .544 with my 1.6 rockers, and a 114 degree lobe separation
Set up: 355 LT1, mildly ported stock heads and intake. Single turbo set up with a 76mm turbo, 1 1/2 inch headers with 2 inch collector to a 3 1/2 inch down pipe feeding to a 3 inch Borla (wide open) with a cut out open all the time right after the downpipe.
Any suggestions, advice, etc would be appreciated.
Also while we're at it, any idea how much more power I can expect with the mods I have already done? I went from a 52-58mm throttle body, 50-60 lb injectors, alchy injection (will be tuned correctly) and I plan on putting 1 1/2 more lbs of boost to it. Thanks!
Also, I will include my current dyno numbers (but I have added a larger TB, injectors, alchy injection, and will be upping the boost about 1-2 more lbs once I can get in for tuning etc) and I would appreciate an educated guess as to what my numbers would be if I added a custom somewhat aggressive turbo Cam.
current numbers: 561 rwhp and 465 torque
Cam numbers: 220 intake 230 exhaust, .544 with my 1.6 rockers, and a 114 degree lobe separation
Set up: 355 LT1, mildly ported stock heads and intake. Single turbo set up with a 76mm turbo, 1 1/2 inch headers with 2 inch collector to a 3 1/2 inch down pipe feeding to a 3 inch Borla (wide open) with a cut out open all the time right after the downpipe.
Any suggestions, advice, etc would be appreciated.
Also while we're at it, any idea how much more power I can expect with the mods I have already done? I went from a 52-58mm throttle body, 50-60 lb injectors, alchy injection (will be tuned correctly) and I plan on putting 1 1/2 more lbs of boost to it. Thanks!
[QUOTE=kcshaner] looks like what you have is working very well...if it ain't broke, don't fix it.
Originally Posted by LSs1Power
It would be nice if u can switch the durations by putting the cam in the opposite way lol. QUOTE]
I agree
Any clue on the power increase with the cam you suggested?
I agree
Any clue on the power increase with the cam you suggested?
[QUOTE=kcshaner] I think u are going to see a huge TQ increase over what u have now. Im thinking 50-70rwtq. The HP might be the same or 10-20rwhp more.
Originally Posted by LSs1Power
It would be nice if u can switch the durations by putting the cam in the opposite way lol. QUOTE]
I agree
Any clue on the power increase with the cam you suggested?
I agree
Any clue on the power increase with the cam you suggested?
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Launching!
Joined: Nov 2004
Posts: 243
Likes: 0
Originally Posted by Pro Stock John
A4?
Goal?
Goal?
My goal is for a lot more torque, and added horsepower. On a scale from 1-10, 1 being a stock cam and 10 being the most outrageos turbo cam out there, I would probably want about an 8.
TECH Fanatic
Joined: Oct 2003
Posts: 1,839
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Funny thing is a stock cam (or near stock cam) will make plenty of power, probably just as much as you're making now.
Something that doesn't bleed off near as much boost will give you a nice pickup in torque.
Something that doesn't bleed off near as much boost will give you a nice pickup in torque.
When I researched my cam, I heard from Comp, from APE, and from an independant engine builder that the old school "reverse split" rule for turbo cams doesn't really apply anymore (I guess due to the new lobe designs 
) and that any increase from a reverse split over a dual pattern or a regular cam would hardly be noticable on newer cam shafts.
I'd love to hear the holes in this story, however, so please poke away
) and that any increase from a reverse split over a dual pattern or a regular cam would hardly be noticable on newer cam shafts.I'd love to hear the holes in this story, however, so please poke away
Thread Starter
Launching!
Joined: Nov 2004
Posts: 243
Likes: 0
Originally Posted by Pro Stock John
What numbers are you shooting for kc?
When I first bought my car, the guy who built/designed everything figured I would need a turbo cam, and more lift on the intake side. Apprarently he has been doing more research and lots of GN guys are running nearly identical cams that I currently have, and there are no really good indicators on what a good turbo cam is for these cars.
Thoughts?
Thread Starter
Launching!
Joined: Nov 2004
Posts: 243
Likes: 0
Originally Posted by Pro Stock John
What converter? You have/cannot lock the converter on the dyno?