cam to make 400rwhp
07-07-2015, 11:36 AM
#1
cam to make 400rwhp
I will be hand porting my heads myself. been watching enough videos and reading enough books to do it myself. got a pair of spare heads to practice on. any how. with heads and intake port matched, 750 cfm 4bbl carb, hooker headers, 3.73 gearing 4 speed. looking for a camshaft to compliment it to make atleast 400hp. right now I got a purple cam. believe the specs are 268/268 474/474 why is the lift so low? was looking at a lunati 276/289 513/533 110
07-07-2015, 04:46 PM
#2
As to the cam choice. If everything else is good/great? You could probably do well with something similar to the Mopar 292/509 to accomplish 400hp at the flywheel.
Last edited by Drag Pak; 07-07-2015 at 05:28 PM.
07-07-2015, 07:11 PM
#4
Super Moderator
I'd call it mild, but it's a safe street cam that will wake up that little 340.
07-07-2015, 08:43 PM
#5
Very driveable/giddyup for a stick car.
I would recommend you only blend the bottom seat cut to the port/runner walls. Without intimate knowledge of the LA head, any more and you can do as much harm as good!(FLOW LOSS)!!!
To port/gasket match the intake, you must test fit it first with all gaskets to ensure the manifold sits down on/compresses the front and rear gaskets!
I would recommend you only blend the bottom seat cut to the port/runner walls. Without intimate knowledge of the LA head, any more and you can do as much harm as good!(FLOW LOSS)!!!
To port/gasket match the intake, you must test fit it first with all gaskets to ensure the manifold sits down on/compresses the front and rear gaskets!
Last edited by Drag Pak; 07-07-2015 at 08:47 PM.
07-07-2015, 10:16 PM
#8
While it may not be at it's best at some compression ratios, I believe it will work at a variety of CR'S
You must take into consideration that most if not all as stock engines are no where near their advertised build specifications or CR's
Ran 14.79 in a 3567 lb E - body/3.55:1 gear, with this cam in a box stock (30,000 mile)318 - 8:1 CR short block (taken from my wife's Volare) with oiling mods and "U" 2.02 heads and 6 Pack.
Worked just fine.
You must take into consideration that most if not all as stock engines are no where near their advertised build specifications or CR's
Ran 14.79 in a 3567 lb E - body/3.55:1 gear, with this cam in a box stock (30,000 mile)318 - 8:1 CR short block (taken from my wife's Volare) with oiling mods and "U" 2.02 heads and 6 Pack.
Worked just fine.
Last edited by Drag Pak; 07-07-2015 at 10:28 PM.
07-07-2015, 10:21 PM
#9
Reread op 1st post quotes 400 hp. Gets a little confusing with thread title.
07-08-2015, 04:05 AM
#10
Sorry for any confusion I was just looking for a cam to fit the mods done. As for the heads I am going to gasket match it. And just open the ports up not touching to much inside, just going to clean and smooth it out a little. Will be using 80 grit sand paper instead of carbide bits. May take longer but it will be safer.
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