big cams

[joshs1074]

sorry this is a dumb question and ive done some searching. if there is something somewhere
on this please let me know. i been thinking about upgrading cams but was wondering about the pros and cons of the upgrade. thanks

 

[talonalex92]

I run BC 272s in my 16g car. I would have got better ones if I knew now what I did then. Check my thread about "New cams hitting caps?" its in my profile. I would support the 272s fully, especially for your car. Idle is fine. Just think more about who's you will buy..

 

[joshs1074]

i was just looking whats the deal with comp cams they are way cheaper

 

[e85_4g63]

I run BC 272s in my 16g car. I would have got better ones if I knew now what I did then. Check my thread about "New cams hitting caps?" its in my profile. I would support the 272s fully, especially for your car. Idle is fine. Just think more about who's you will buy..

Sorry to hear you have BC's in your car man. I had a brand new set of BC 280's sitting here in my room and I sold them to a guy. After working on 2 different 1g's with BC 272's in them, I wasn't even thinking about keeping them. I'd look into FP2's or GSC S2's over anything. I just bought a set of reground 272's from Delta Cams for the car I'm working on currently out of couriosity.

 

[1992awdlaser]

i was just looking whats the deal with comp cams they are way cheaper

They are good. The comp 101200's are the same as the FP2's I believe.

 

[joshs1074]

sorry i have to log off we have a thunder storm and dont want my comp fried. i will catch up with you guys later and finish reading all of your advice. thanks

 

[1992awdlaser]

They are good. The comp 101200's are the same as the FP2's I believe.

Update to this post.

They are the same cams. I just checked the cam card specs.

 

[90_GSX_DSM]

I would be willing to bet if I put stock cams back in my 50trim car I would lose at least 25whp. And my car is nowhere near fully built, just bolt ons.



Go ahead. Just because a car has a turbo it doesn't mean you can sacrifice flow through the heads and make the same power curve as a modified head/cam combo.




My FP2's idle perfect at 750rpm. Same as if my car had stock cams, just slight lope to the trained ear.

Relax man I was just kidding. That dyno sheet is just what I wanted to see though. I might save up for the 272's after all.

 

[Rob10_99]

I ran B16g and BC272's in my daily, fun up top, but it did lack down low. I would for sure say 'streetable' as long as you have good compression =)

 

[sbengineering]

it's nice to see everyone has become experts.

With forced induction cam events and overlap are way more important than bigger lift and duration.

Also, car weight, gear ratios, tranny type, and other non-engine type factors play a big part in how you cam behaves in your engine.

 

[1992awdlaser]

With forced induction cam events and overlap are way more important than bigger lift and duration.

I disagree about them being "way more important." I will agree with you that they are equally important though.

Also, car weight, gear ratios, tranny type, and other non-engine type factors play a big part in how you cam behaves in your engine.

I would say it plays a big part in how your engine behaves as a whole and not a particular part. If anything the turbo would be the main part.




Side note- When are you gonna update your build thread?

 

[audiomaster]

I have a 2.3 w/272s and it is freaking awesome. Great low end, drove a stock '99 GSX the other day and seat of the pants my car has more low end, so no real loss, but the on boost difference is great, I idle a bit rough but I like that and there's no real hindrance to performance IMO.

Get the 272s then you'll be done with cams and you can focus on brakes, suspension, handling before you get so much power you can't enjoy it.

 

[sbengineering]

Side note- When are you gonna update your build thread?

This week i'll post more things, customer cars come first , mine come last.

Also, i'd like to mention that 4 valve heads flow just about 1.4 more air then 2 valve heads.

 

[eagle2nv]

Well if u want cheap go with BC 272's , but on 90 to 99 dsm you should upgrade ## valve springs , a cheap upgrade is throw some evo 8 or 9 springs and retainers. I ran the bc 272's on my evo 8 and they weren't bad and provided tons of low TQ. but at top end the over lap on the cams were off due to bc's being at most 30* degrees off from what they are suppose to be i was 27psi tampering down to like 17 by redline. So i needed adjustable cam gears to bring them as close as i could to center. mine were 7 degrees off on the intake and 4 degrees off on the exhaust. so you get what u pay for . I did make a max of 354 whp and 368wtq with them on the stock evo8 16g.

my new setup on my talon is gsc 274's ( S2's) and gsc behivee springs, titaium retainers and chromoly spring seats. $900.00 dollar setup , but worth the money.