Low RPM Cam driveablity?
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From: Lincoln Park Mi
Low RPM Cam driveablity? Hey guys, tried to search up something about this but nothign came up..
Im trying to decide on a cam, I have it narrowed down to either
Hammer
TR220
TR224
If I go with either TR cam I will get a 112 LSA
I want to make sure that whatever cam I get is at least livable on the street. I have a friend with a Hotcam and it surges like MAD under 1500, and really sucks at low RPM. I cant deal with that. (well I CAN but I'm not willing to)
I want something that will give a noticable lope at idle, and I wantt he TR224 because I love the way it souds, at least in the sound clips I've heard. And I know it will give me decent power, but being the biggest of the three, the worst low end torque.
I have never had a car that wasnt stock with a cam that small, so I dont know how driveability is with them.
Are all the cams mentioned tame at low engine speeds? I realize they will be lacking in power, but will they surge spasticly like the Hotcam?
If so are 3.73s or 4.10s enough to make them liveable on the street. I already have 3.73s and wouldnt mind going to 4.10s with the raised limiter used with these cams.
I will be using stock heads.
Am I Correct in assuming that all these cams are relatively close in power potential?
On other thing, How do the TR220 and Hammer sound? Are they Noticable?
thanks in advance
Troy
Im trying to decide on a cam, I have it narrowed down to either
Hammer
TR220
TR224
If I go with either TR cam I will get a 112 LSA
I want to make sure that whatever cam I get is at least livable on the street. I have a friend with a Hotcam and it surges like MAD under 1500, and really sucks at low RPM. I cant deal with that. (well I CAN but I'm not willing to)
I want something that will give a noticable lope at idle, and I wantt he TR224 because I love the way it souds, at least in the sound clips I've heard. And I know it will give me decent power, but being the biggest of the three, the worst low end torque.
I have never had a car that wasnt stock with a cam that small, so I dont know how driveability is with them.
Are all the cams mentioned tame at low engine speeds? I realize they will be lacking in power, but will they surge spasticly like the Hotcam?
If so are 3.73s or 4.10s enough to make them liveable on the street. I already have 3.73s and wouldnt mind going to 4.10s with the raised limiter used with these cams.
I will be using stock heads.
Am I Correct in assuming that all these cams are relatively close in power potential?
On other thing, How do the TR220 and Hammer sound? Are they Noticable?
thanks in advance
Troy
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From: Houston
Re: Low RPM Cam driveablity? The usual measure I use to compare "streetability" between camshafts is overlap @ 0.050". The smaller the overlap, the better the street maners. Overlap for the following cams @ 0.050" is:
hotcam = -1.5
TR220 @ 112 = -4
TR224 @ 112 = 0
T1 = -3
TR220 has the smallest overlap (-4)
FYI overlap of 98-00 Fbody cam is -24
[ January 25, 2002: Message edited by: Aircooled ]
[ January 25, 2002: Message edited by: Aircooled ]</p>
hotcam = -1.5
TR220 @ 112 = -4
TR224 @ 112 = 0
T1 = -3
TR220 has the smallest overlap (-4)
FYI overlap of 98-00 Fbody cam is -24
[ January 25, 2002: Message edited by: Aircooled ]
[ January 25, 2002: Message edited by: Aircooled ]</p>
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From: Chicagoland
Re: Low RPM Cam driveablity? [quote]Originally posted by Aircooled:
<strong>FYI overlap of 98-00 Fbody cam is -24
</strong><hr></blockquote>
<img src="gr_eek2.gif" border="0"> That's quite a difference between stock and next least conservative cam.
<strong>FYI overlap of 98-00 Fbody cam is -24
</strong><hr></blockquote>
<img src="gr_eek2.gif" border="0"> That's quite a difference between stock and next least conservative cam.
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From: new england
Re: Low RPM Cam driveablity? FREAK, from the dyno graphs ive seen torque is up every where all the way down to around 2000rpm, with hammer and tr cams over stock. So i cant imagine driveability suffers much with more torque everywhere! I think were engine suffers is from 1200 to 2000 where there is probably much less than stock. This shouldnt be too hard to drive around this range, and maybe use 5th instead of 6th on the hiway.
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From: Lincoln Park Mi
Re: Low RPM Cam driveablity? Thanks for the replys, I understand that the bigger cams are going to be "worse" and the concept of overlap, but it really doesnt tell me much about what they actualy feel like.
havent seen to many dyno sheets of cams and stock heads, but they all start at about 2000 which is way too high for me to tell how driveability will be affected. I dont want to drive around at 2000-2500 RPM all the time, that seem slike it would get really annoying after about 2 minutes
anyone actualy have any of these cams with stock heads and a 6 speed? I know there are people out there.
Maybe Ill just get one and see how I like it and go from there
havent seen to many dyno sheets of cams and stock heads, but they all start at about 2000 which is way too high for me to tell how driveability will be affected. I dont want to drive around at 2000-2500 RPM all the time, that seem slike it would get really annoying after about 2 minutes
anyone actualy have any of these cams with stock heads and a 6 speed? I know there are people out there.
Maybe Ill just get one and see how I like it and go from there
Re: Low RPM Cam driveablity? I have the TR 224 112 cam now. I can drive in 4th gear locked up at 1500 rpm without issue. My 4th gear is close to your 5th gear. I have tuning and that probably helps a bit. Cruising at 1300 and below you may experience some cam surge.
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From: Salem, NH
Re: Low RPM Cam driveablity? Freak: heres the deal, I installed the Thunder Racing cam about 2 months ago, I have 4.10's so my low end is very good anyway, BUT comparing my lowend (meaning 1800-3000 rpms) the cam definetly FEELS stronger SOTP. It spools up revs a lot faster and has a lot more torque when you rol into the throttle when the motor is lugged down. The cam just rocks everywhere, the power really hits at 3800 rpm's and there is a noticeable kick in the *** even in thrid and fourth gear. On the higheay if you ware worried about the "roll on" power while cruising on the highway, I didn't notice a change either way in 6th gear because the tach is normally under 2K rpm's, but when the tach gets above 2K rpms (which mine does past 75 with the 4.10's) the roll on power is noticeablly better. Now let me remind you that I haven't gotten my headers yet and have stock manifolds, so with your Hooker LT's the low end torque should be real snappy. It does surge a little at times under 1600 rpms but since I drilled the TB hole and richened it up with a MAFT and a tap, it only surges once in a while and cold starts are great, the only idling trouble I have is when the car is warm and I start it, for the first 5 or 10 seconds I have to give it a little gas before the idle steadies out which is common with a big cam. And for the sound, the Hammer cam will lope a little more, but IMO the TR 224 112lsa which I have has a "cleaner" lope for a lack of a better word, not as dirty sounding. Good luck.
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From: Lincoln Park Mi
Re: Low RPM Cam driveablity? Ragtop, Brendon, thanks. That was exactly the type of info I'm looking for.
So far thats 2 votes for the TR224, with a possible change to 4.10s (or even 4.30s when i go with a 9 inch)
the surging sounds a lot milder than my buddies hotcam. it felt like i was alternating between gas and brake it was so bad.
anyone with either of the other cams?
So far thats 2 votes for the TR224, with a possible change to 4.10s (or even 4.30s when i go with a 9 inch)
the surging sounds a lot milder than my buddies hotcam. it felt like i was alternating between gas and brake it was so bad.
anyone with either of the other cams?
