which cam with bolt on LT4

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Nov 25, 2007 | 12:42 PM

96 lt-4

Thread Starter

Drifting

Joined: Oct 2005

Posts: 1,913

Likes: 48

From: Angier nc

which cam with bolt on LT4

vehicle has fresh motor with:
6 speed
k&n w/cut lid
52mm tb
ewp
stock heads w/fresh valve job
1 5/8 long tubes
bullet cats
3"exhaust
magnaflow 2.5 axle back
4.10 gears
this is a daily driver an must behave as such.must have decent idle characteristics(i.e. 750-850rpm).must be able to cruise at 1500-1600 rpm in sixth without bucking and/or surging.i am after the most power i can get without having a high idling ill mannered beast to commute with.i am considering:
1.gm hotcam 218/228 on a 112
2.comp xfi 218/224 on a 113
3.lpe 219/219 on a 112
4.comp xfi custom 224/230 on a 113
5.other (please recommend)

Last edited by 96 lt-4; Nov 25, 2007 at 12:50 PM.

Nov 25, 2007 | 12:48 PM

RichS

Le Mans Master

Joined: Aug 1999

Posts: 7,337

Likes: 137

From: WilkesBarre PA

I think the Hotcam is a good daily driver cam for the LT4.

Nov 25, 2007 | 12:49 PM

Strick

Race Director

Joined: Feb 2003

Posts: 11,671

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From: Lake Wylie SC

Nov 25, 2007 | 01:00 PM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,261

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From: O'Fallon Missouri

Quote:

Originally Posted by 96 lt-4

4.comp xfi custom 224/230 on a 113

#4 gets my vote.

I'm running a Comp Cams custom grind 224/230 605/622 112+2 (1.6). This camshaft with the right tune will cruise around like a near stock cam. You may not want to go so high on the lift with your stock heads. But, with 1.5 rockers the lift will be ~566/584.

Nov 25, 2007 | 01:01 PM

Muffin

Race Director

Joined: Jun 1999

Posts: 14,924

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From: Merritt Ils Fl

Quote:

Originally Posted by RichS

I think the Hotcam is a good daily driver cam for the LT4.

Its what I bought.

Nov 25, 2007 | 01:20 PM

73, Dark Blue 454

Melting Slicks

Joined: Mar 2005

Posts: 2,838

Likes: 10

From: Austin TX

Dual pattern cams such as GM's Hotcam isn't needed since you have a free flowing exhaust system. I'd go with number 4 as well or a comparable single pattern grind.

More here on dual pattern cams:

http://www.camaros.net/forums/showth...attern+cabbage

Nov 25, 2007 | 03:06 PM

BADDUCK

Le Mans Master

Joined: Jun 2006

Posts: 5,642

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From: One day you're a Comet...the next day you're dust... Arkansas

Nov 25, 2007 | 05:04 PM

pr0zac

Melting Slicks

Joined: Mar 2004

Posts: 2,141

Likes: 2

From: Pittsburgh Pa

the xfi cams suck.. ask me how i know. go with a cc305(220/230) or 503(227/230) with 1.6's. they seem to be the most popular and make more than a hotcam. i had a hotcam in an 94 trans am and it ran hard although it was an auto with 2.73 gears.

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Nov 25, 2007 | 05:12 PM

Orr89rocz

Burning Brakes

Joined: Jul 2006

Posts: 1,080

Likes: 2

From: Pittsburgh PA

Quote:

Originally Posted by pr0zac

ok, how do you know?

every result i've seen are more impressive than the other grinds out there.

i'd go xfi 218/224 with 1.5 rockers tho. should run great in a LT4.

cc503 is also a great off the shelf cam

Nov 25, 2007 | 08:49 PM

#10

pr0zac

Melting Slicks

Joined: Mar 2004

Posts: 2,141

Likes: 2

From: Pittsburgh Pa

i have the bigger xfi that is 230/236 that i also ran in an AFR headed 383 and it didn't seem to be as powerful as would have hoped. i would do a hot cam or 503 before the xfi.

Nov 25, 2007 | 09:29 PM

#11

Orr89rocz

Burning Brakes

Joined: Jul 2006

Posts: 1,080

Likes: 2

From: Pittsburgh PA

Quote:

Originally Posted by pr0zac

i have the bigger xfi that is 230/236 that i also ran in an AFR headed 383 and it didn't seem to be as powerful as would have hoped. i would do a hot cam or 503 before the xfi.

Well i wouldnt qualify that experience as grounds to say that XFI cams suck. Maybe the power you got and were disspointed in, were due to other factors. How much power did you make?

I know a guy running AFR's on a 355 and siamesed TPI setup with a XFI 218/224 duration cam. He made 360 at the wheels. cam pulled to 6000 very well. 360whp on a 355 with that cam is pretty impressive. Everything has got to be there tho, from longtube headers to proper intake to proper tune

i think the xfi268 would be a great choice. its idle quality is mild compared to some 503 cams i've heard

Nov 25, 2007 | 09:59 PM

#12

jonecap

Drifting

Joined: May 2005

Posts: 1,370

Likes: 1

From: Raleigh NC

George, Hotcam it and we have the tune ready to go if you decide to go OBD1. Drivability isn't as good as a stock cam, but you've driven my car so you know what to expect. Let us know which way you go with it.

Nov 25, 2007 | 10:34 PM

#13

96 lt-4

Thread Starter

Drifting

Joined: Oct 2005

Posts: 1,913

Likes: 48

From: Angier nc

Quote:

Originally Posted by jonecap

your car has alot better "manners" at low speeds and cruising than mine.gm's one step above the hotcam(222-230 i believe)looks interesting as well.
the hotcam is proven.i am wondering if i can get more with only a small sacrifice in driveability compared to the hotcam.chris's car only feels lumpy below a 1000rpm.how much time do you spend there?not much.
anyone have the lpe219?

Nov 25, 2007 | 11:18 PM

#14

Orr89rocz

Burning Brakes

Joined: Jul 2006

Posts: 1,080

Likes: 2

From: Pittsburgh PA

219 i have seen in many small block applications and seems to act bigger than the specs say. that may not be a bad thing. Driveability should be pretty good. somewhat like a hotcam but makes more power

i still think the xfi 268 cam is the best bet. guy made 370whp on ported LT1 heads with no real tune...it was very very lean. powerful cam with good driveability

Nov 26, 2007 | 10:23 AM

#15

Jonnymac

Melting Slicks

Joined: Oct 2005

Posts: 3,178

Likes: 5

From: Daleville Indiana

St. Jude Donor '08

I have a 219 that might go in this winter but no heads or LT's to go with it.

Nov 26, 2007 | 06:37 PM

#16

pr0zac

Melting Slicks

Joined: Mar 2004

Posts: 2,141

Likes: 2

From: Pittsburgh Pa

untuned with shorties, 4.10's and stock tb i did 109.6mph in the quarter..

Nov 27, 2007 | 12:31 PM

#17

Midnight LT4

Instructor

Joined: Nov 2007

Posts: 101

Likes: 0

From: Eureka California

Anyone have any experience with smogging a car with any of these cams?

Nov 27, 2007 | 12:40 PM

#18

vader86

Team Owner

Joined: Sep 2001

Posts: 62,066

Likes: 1,722

From: Athens AL

C7 of the Year - Unmodified Finalist 2021

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Hotcam can be made to pass emissions with the right tune.

Once you say "DD" hotcam gets the vote.

Nov 27, 2007 | 01:16 PM

#19

9secondflat

Melting Slicks

Joined: Dec 2005

Posts: 2,291

Likes: 0

From: sterling ct

i have a ZZ9 similar to a hot cam, it passes MD inspection no problem. idles 800 with a nice exhaust sound...got to say i love the corsca exhaust...much nicer than my borla ihad on a c5

Nov 27, 2007 | 03:30 PM

#20

96Eric

Racer

Joined: Aug 2005

Posts: 385

Likes: 0

From: Apopka Florida

Don't know if most people know about this site:

http://www.cmotorsports.com/engine/l...ft-design.html

Personally, I like this cam:

233/242 duration, .569"/.576", 115lsa

The high LSA makes for an great idle.

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