Hotcam tto small?
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 1,214
Likes: 0
From: Miami FL
Hotcam tto small?
Well, I finally have my '93 in the shop. I'm doing a 383 and was wondering if the Hotcam is a good choice for this application. I'm currently running an LT1 with LT4 top end with the Hotcam, 52mm TB, EM long tubes. I'm probably going to port and polish my LT4 heads while I have them off. Can anyone recommend a cam that will improve the performance over the Hotcam in a 383 application whithout increasing idle lope? Is an expectation of 450CHP and torque realistic? Ant input wouls be helpful.
Drifting
Joined: May 2005
Posts: 1,258
Likes: 38
From: springtown Texas
the hot cam is too small imo.
im running the GM 846 cam in my 383 and making 402 rwhp and 408 rwtq. and it has no lope to it. sounds stock except for the flowmasters.
i'm changing my cam soon to get more hp and i dont care if the new cam has lope.
the 846 specs are
222/230 @.050
509/528 1.5 rockers
543/563 1.6 rockers (i have 1.6)
112 lobe sep
hope this helps.
im running the GM 846 cam in my 383 and making 402 rwhp and 408 rwtq. and it has no lope to it. sounds stock except for the flowmasters.
i'm changing my cam soon to get more hp and i dont care if the new cam has lope.
the 846 specs are
222/230 @.050
509/528 1.5 rockers
543/563 1.6 rockers (i have 1.6)
112 lobe sep
hope this helps.
Melting Slicks
Joined: Jul 2004
Posts: 2,695
Likes: 0
From: Chicago Illinois
[QUOTE=TOO_HOTTVETTE;1559618267]Well, I finally have my '93 in the shop. I'm doing a 383 and was wondering if the Hotcam is a good choice for this application. I'm currently running an LT1 with LT4 top end with the Hotcam, 52mm TB, EM long tubes. I'm probably going to port and polish my LT4 heads while I have them off. Can anyone recommend a cam that will improve the performance over the Hotcam in a 383 application whithout increasing idle lope? Is an expectation of 450CHP and torque realistic? Ant input wouls be helpful.[/QUOTE Talk to a head porter like LE or AI. They can put you where you want to be. You could easily see 400+ rwhp depending on how good the heads are ported and size of cam. Porting those heads is a must. You should have a animal when its all done. What kinda of price did your shop hit you for?
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
450 CHP should be very realistic w/ ported LT4 heads and the hotcam on a 383. Knowing what my 350 bottom end made before with my ported LT1 heads and a hotcam, I feel that my 388 bottom end should be right at if not at least damned close to a computed 450 CHP. And I use a very conservative conversion factor when computing from RWHP.
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
Well, I finally have my '93 in the shop. I'm doing a 383 and was wondering if the Hotcam is a good choice for this application. I'm currently running an LT1 with LT4 top end with the Hotcam, 52mm TB, EM long tubes. I'm probably going to port and polish my LT4 heads while I have them off. Can anyone recommend a cam that will improve the performance over the Hotcam in a 383 application whithout increasing idle lope? Is an expectation of 450CHP and torque realistic? Ant input wouls be helpful.
I agree with the GM 846 cam at a min. Thats the cam I'm sliding in next...
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 6
From: OKC OK
talk with an LTx head/cam expert.
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Racer
Joined: Sep 2005
Posts: 271
Likes: 0
From: New Freedom PA
More info please....
Well, I finally have my '93 in the shop. I'm doing a 383 and was wondering if the Hotcam is a good choice for this application. I'm currently running an LT1 with LT4 top end with the Hotcam, 52mm TB, EM long tubes. I'm probably going to port and polish my LT4 heads while I have them off. Can anyone recommend a cam that will improve the performance over the Hotcam in a 383 application whithout increasing idle lope? Is an expectation of 450CHP and torque realistic? Ant input wouls be helpful.
1. auto vs 6 speed in your choice.
2. local emission testing?
auto needs more gear , loose convertor...for low end torque.
6 Speed can get away with more camshaft overlap , Bigger lift due to gear ratio's in the trans keeping the motor reving higher IMO.
Desert