cammed lt1 people
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
I have dyno'd several stock F bodys using anything from a LT4 hot cam to a comp 306 cam. Average power levels range from 290 to 310 on my dyno. Can't recall any cam only C4 cars lately.
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
I ran the Hotcam for a time before I installed ported heads or even headers. There was no doubt that it provided a nice increase along with 1.6 rockers and better springs. I never had it dynoed until after more mods were done so I could only guess at how many ponies were added with just the cam and rockers.
Race Director
Joined: Jun 2001
Posts: 10,956
Likes: 680
From: Marlboro country MA
I've been running the HotCam on my LT1 for a couple of years now with stock heads and intake. It didn't do all that much for me until I added the long tube headers, keeping the stock mufflers. See sig file for other mods and racing times.
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 2,141
Likes: 2
From: Pittsburgh Pa
i am having a debate on another forum about it. basically i am not impressed with unported lt1 heads myself but i blew an engine apart and need to get the car running again.. since its apart i don't think a stock cam would be worth putting in and i would love to go with an 847 but i think i'd be better off with a cc305 on a 112 or a cc306 both with 1.6 rockers? i have never expirenced an 847 or a 306 only a 112 and 114 305 with 1.5 rockers. i liked the 112 cc305 better but if the cc306 will make more power and not be a bear i would like to squeeze out as much as possible. just trying to see what the difference would be..
Last edited by pr0zac; Aug 20, 2006 at 09:42 PM.
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Team Owner
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
I run stock Lt-1 heads with my hotcam setup. I don't have any dyno results but the gain has been nothing short of impressive.
Would it be better with ported heads? Of course....Is it totally nessecary, no.
Would it be better with ported heads? Of course....Is it totally nessecary, no.
Burning Brakes
Joined: Nov 2004
Posts: 1,107
Likes: 0
From: RI
93 Lt1 with hotcam, stock heads, 1.6 RR, longtubes, RT cats, B&B triflow and en electric waterpump was 282 RWHP on a dynomameter. Gentelman who dynoed the car said the engine is in the 370-380 flywheel range
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
I put down 346/352 on tjwong's Mustang dyno, hot cam, bolt-ons (headers, meziere, claw intake), stock heads, intake, and TB. That was on an engine with nearly 130k on the clock and a leaking head gasket too. My guess is it can be done.
Last edited by ninetyfivevette; Aug 21, 2006 at 09:15 PM.
Heel & Toe
Joined: Aug 2006
Posts: 21
Likes: 0
Originally Posted by STL94LT1
With stock heads I wouldn't go bigger than the CC305.
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Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 2,141
Likes: 2
From: Pittsburgh Pa
Originally Posted by ninetyfivevette
I put down 346/352 on tjwong's Mustang dyno, hot cam, bolt-ons (headers, meziere, claw intake), stock heads, intake, and TB. That was on an engine with nearly 130k on the clock and a leaking head gasket too. My guess is it can be done.
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by sonomacrew01
93 Lt1 with hotcam, stock heads, 1.6 RR, longtubes, RT cats, B&B triflow and en electric waterpump was 282 RWHP on a dynomameter. Gentelman who dynoed the car said the engine is in the 370-380 flywheel range
Le Mans Master
Joined: Jul 2000
Posts: 7,634
Likes: 326
From: Greenville SC
I 96-97 heads flow a little better, not a huge difference though. I have a complete set of 95 heads and also an intake, TB, etc. if you are looking into a good set to port or just bolt on ready to go. I took them off when I did my heads cam. I made 405rwhp with ported LT1 heads, but NOT a hotcam.
Instructor
Joined: Mar 2006
Posts: 237
Likes: 1
From: Alpharetta GA
How about tuning to pass emissions with some of the bigger cams? I have heard the LT4 Hotcam can be tuned to pass the sniffer, but what about a CC306, ZZ409, GM846/847? Anyone have any relevant experiences? I'm in the Atlanta area with my '95 that is just dying for a cam and some EM longtubes, but I still need to pass the test.
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
With the price of some catalytic converters so cheap, I wonder if you couldn't have an extra set of cats you can bolt into the exhaust just for passing emissions. The 3" bullet cats I used are were only like $60 each and I easily passed emissions with my smaller LT4 hot cam, so I think there is some extra headroom for the larger cam I am using in my 383 (CC467). If not, I bet an extra pair of cats would get me through.