speedracer5532

iTrader: (8)

KP, I think you should advance that cam some.

Inspector12

iTrader: (29)

So you think it is bad to run higher LSA's? Cause now you could be doing the same thing spreading bad advice that is. I mean to say that there are a ton of cars making great power and running good track times to back up what people have been saying about running a higher LSA etc... Just food for thought. But I like to debate things LOL! see ya back on the post good runs KP.

kp

iTrader: (34)

Its in at 114 (1 degree advanced) actually, thats as close as I can get with this chain. I dont want to increase the bottom end any, I wanted to increase the top end power and it seemed to work. I'm going to run it like this for a while, one or two degrees advance/retard really isnt going to make a world of difference with this cam anyhow..

kp

iTrader: (34)

I dont mind people debating, but there are so many variables and you will see people run well with wide and narrow LSA cams. I just refuse to debate any more on it, I have tried hundreds of cams over the years and I have my theories and so do many others, cams are cheap - swap 'em and see

sevanseriesta

iTrader: (34)

I will be doing this exact same thing in a couple weeks except on a turbo car. I am going get dyno and track times. I am going to start with a stock cam, then move to a comp grind. Those specs are going to be 230/228 .591/.588 on a 114. Then for ***** and grins I am going to try the Trex cam. Just cause I have one laying around and I loved the way that it sounded in my all motor car. I will have dyno #'s and track times for everything.....

EPP

iTrader: (22)

Hi Kevin, I'm glad you got a video of it at idle. Bob

kp

iTrader: (34)

Thats the way to do it really, the cam and cylinder head debates have been going on forever, yet you will see a group of people that will do well with parts onthe opposite ends of either spectrum. Cams are a piece of cake to swap on these, get a baseline with a 'known' decent working middle of the road cam, get it dialed and then start trying some custom stuff when you cant get any more out of what you have. Otherwise you end up going in giant circles

Slowhawk

iTrader: (12)

You need compression Believe me ,we have tested it.Bring that up to atleast 10-1 and you'll be 8's.I would actually run allittle bigger cam with a lower DCR and run comp. 10.5 to 11-1

Wish I could release our race car specs but it was unbelievable gains raising the compression.Enough for us to have the fastest F1 car in the country

Z8'S

iTrader: (6)

^^^^^^^^ssshhhhhhhhhh.

kp

iTrader: (34)

My compression was at 9.7:1, I recently dropped it, I know how it all works.

I was only running the D1SC at 6K under max impeller this weekend (7.25/3.7), 146mph @ 3420lbs with that pulley combo on a 2400' DA day with an A2A is pretty good. I think I have the fastest procharged 347 LSx car in the country, that and a quarter might get me a cup of coffee

It will go 8s with the F1A on it on a good day as it sits right now I think, honestly I'm more concerned with keeping the head gaskets on it, not having to run C16 and not having to deal with an A2W intercooler way more then going 8s in this thing. This is just a fun car I threw together in my garage, you race car guys are serious about it - I'm not

Slowhawk

iTrader: (12)

Sorry,since I always see you post about being at the track and wanting to go 8's that you were a serious racer

kp

iTrader: (34)

I dont post about running 8s that often, lot of others would like to see it but I'm very happy with the way the car performs. I do race the car a lot I guess, 20 or so times a year if thats a lot. Not because I'm a serious racer (I'm a pretty crappy driver really), but I just enjoy playing around with the car. All I'm concerned with is the car performing as well as it can with the parts that are on it and that it does. I dont stress over .15 really and I have no interest in putting a chute on the car, been there, done that, I'll leave that to the serious racers

Dustin11

I can't say which LSA is better but the Buick's were engineered over 20 years ago. Lots of research and technology has changed since then.

WHPLASH

iTrader: (22)

KP, would you say that cam would be a good upgrade for my setup? Or a little too big?

stevieturbo

How has the cam impacted on fuelling requirements ?

I know you say you are allowing closed loop to take control...but do you know how much fuel it has added or removed over the previous cams tune ?

kp

iTrader: (34)

Its a pretty big cam in a 346, way bigger then I would have usually picked but I figured I would try it and see what happens. For the DA it appears I lost a whopping .5psi of boost, the 1/8 mile mph is up a solis 2mph, 1/4 mile is up one mph but with the shorter DOT tires I had on it it was hitting the limiter right after the traps. I need to bump up the rev limiter a bit and shift a little higher - it really makes the charge up top.

What I was trying to accomplish was take away some bottom end so with the F1A I could calm the wheelstands down and get me a few more RPM on the top end, both seem to be working as planned.

Stevie, it is definately using more fuel (at high rpm), on a similar DA day it would be about -2% on the O2 correction and it was +1% or so last weekend. I had to take a lot of transient (accelerator pump) and idle fuel out because of the overlap but in its going don the track range (6200-7200) it is definately using more fuel. The numbers arent steller but its getting warm around here so 9.30s@146 and 5.90@117 1/8 mile is pretty good at 2000+ DA for this car. Got a long wait until fall and some good weather

frcefed98

iTrader: (16)

Thank you sir for the compliment. The cam is a "STG 3" blower grind from MMS, the specs are really close to Kev's/your cam. I ran it with my D1-SC set up and decided to run it with the turbo.
233/244 .578/.602 115 are the specs.


J

Jake@EPP

Just a bummer you have to have exhaust. You did put a cut out on there right.....

frcefed98

iTrader: (16)

The "after" part of that video was with a cat in DP section......that cat was recently removed Now its pretty damn loud without it, but the cat back is coming off and it will be dumped right past the seat. The car is becoming more track and less street, no where to really enjoy it but at the track anyway

kp

iTrader: (34)

Figured I'd throw this in here just so people can hear how much louder the F1A is then the D1SC. I put the F1A on today with a 4.25 pulley to hopefully get it down around 15-17psi (had a 4" on it last time @ 20psi)so I can finally sell off the D1SC - kind of silly having two blower laying around..

But here is the car idling with the F1A, compare it to the other idling vid up top - pretty hard to hide it has a blower on it with the F1

http://video.ls1tech.com/video/ceae3...3801157387.htm