is 340whp reasonable?
The problem is more than likely that cam. Even with head work it is absolutely enormous on stock heads, even after some port work. Extensive port work is required. Your 58mm throttle body isn't giving you a gain. And I would not finger out the shorties as your primary concern. I would estimate something is not functioning properly, or your tune is not a good one. Some of the others are suggesting to do more bolt on's, i would hold off until you figure out your current issue(s). your car should be making more, no one can argue that...
Stop reading false facts and repeating them.
232/240 .584/.584 108 LSA - 2200-6400 RPM
Choppy idle. Good mid range and top end power. Minimum 2800 stall and 3.42 gears for F and Y body. Minimum 3200 stall and 4.11 gears for B body. Comparable to Comp 306 cam
Weird that Lloyd Elliott sells a cam for stock bottom end cars that is comparable to the 306.
Those numbers are really low for a CC306 and ported heads. A local guy, he's also on this site I believe, made 360rwhp through a stalled auto with shorties on a cc306 cam-only.
Has the car been tuned? Is he sure of the head porting? And was this on a Mustang Dyno, or a Dynojet?
Has the car been tuned? Is he sure of the head porting? And was this on a Mustang Dyno, or a Dynojet?
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Those numbers are really low for a CC306 and ported heads. A local guy, he's also on this site I believe, made 360rwhp through a stalled auto with shorties on a cc306 cam-only.
Has the car been tuned? Is he sure of the head porting? And was this on a Mustang Dyno, or a Dynojet?
Has the car been tuned? Is he sure of the head porting? And was this on a Mustang Dyno, or a Dynojet?
On The Tree
Joined: May 2005
Posts: 153
Likes: 1
The port job is crap, it may not be costing him HP, but it certainly isn't giving him any either. Those numbers are right on par for those mods with stock heads.
Add 1.6 rockers, LTs, and see 360rwhp or so.
That cam will make power with stock heads, no question about that.
Add 1.6 rockers, LTs, and see 360rwhp or so.
That cam will make power with stock heads, no question about that.
He shoulda went to Lloyd So many factors could have gone with a low power output.. tune, dyno, shorty's, perfect accommodation of parts with the cam, etc.
Shorty's generally rob 25rwhp from a cam/heads setup
Woulda told ya to go heads also if you went with the cam
Yeah, that could be.. I mean ported heads and a cam that big should be putting down a lot more power... but even if the owner went $30 cheap out on one accommodating part with the cam, the restrictions on power could be tremendous
The port job is crap, it may not be costing him HP, but it certainly isn't giving him any either. Those numbers are right on par for those mods with stock heads.
Add 1.6 rockers, LTs, and see 360rwhp or so.
That cam will make power with stock heads, no question about that.
Add 1.6 rockers, LTs, and see 360rwhp or so.
That cam will make power with stock heads, no question about that.
On The Tree
Joined: May 2005
Posts: 153
Likes: 1
I guarantee if you put some stock heads on the car, you would see no decrease in power, assuming everything is tuned right. I'm doing 371rwhp with that cam, bolt ons, and stock heads with zero porting. It was doing 350rwhp before with shorties, stock catback, and a mailorder tune.
Ported heads, bolt ons, and that CC306 should net dang close to 400rwhp. If you think 1.6 rockers and LTs are gonna net you 50-60rwhp, you're crazy. I saw an increase of exactly 11rwhp after going to LTs/3" dumped/Xpip'd duals from garbage Hooker shorties and a stock catback with a Flowmaster muffler. A GOOD dyno tune netted me another 10rwhp 30 minutes later.
The problem with that car is the heads, the tuning, or both. "CNC" just means they have an expensive machine, it doesn't mean they necessarily know how to correctly port reverse flow, LT1 heads.
Ported heads, bolt ons, and that CC306 should net dang close to 400rwhp. If you think 1.6 rockers and LTs are gonna net you 50-60rwhp, you're crazy. I saw an increase of exactly 11rwhp after going to LTs/3" dumped/Xpip'd duals from garbage Hooker shorties and a stock catback with a Flowmaster muffler. A GOOD dyno tune netted me another 10rwhp 30 minutes later.
The problem with that car is the heads, the tuning, or both. "CNC" just means they have an expensive machine, it doesn't mean they necessarily know how to correctly port reverse flow, LT1 heads.
I guarantee if you put some stock heads on the car, you would see no decrease in power, assuming everything is tuned right. I'm doing 371rwhp with that cam, bolt ons, and stock heads with zero porting. It was doing 350rwhp before with shorties, stock catback, and a mailorder tune.
Ported heads, bolt ons, and that CC306 should net dang close to 400rwhp. If you think 1.6 rockers and LTs are gonna net you 50-60rwhp, you're crazy. I saw an increase of exactly 11rwhp after going to LTs/3" dumped/Xpip'd duals from garbage Hooker shorties and a stock catback with a Flowmaster muffler. A GOOD dyno tune netted me another 10rwhp 30 minutes later.
The problem with that car is the heads, the tuning, or both. "CNC" just means they have an expensive machine, it doesn't mean they necessarily know how to correctly port reverse flow, LT1 heads.
Ported heads, bolt ons, and that CC306 should net dang close to 400rwhp. If you think 1.6 rockers and LTs are gonna net you 50-60rwhp, you're crazy. I saw an increase of exactly 11rwhp after going to LTs/3" dumped/Xpip'd duals from garbage Hooker shorties and a stock catback with a Flowmaster muffler. A GOOD dyno tune netted me another 10rwhp 30 minutes later.
The problem with that car is the heads, the tuning, or both. "CNC" just means they have an expensive machine, it doesn't mean they necessarily know how to correctly port reverse flow, LT1 heads.
Anyways something weird happened today,we raced a full bolt on 06 GTO that put down 354whp & we kicked the crap out of him im really surprised we were about 4 cars ahead we tried from dig and from a rolling.
either the dyno is mistaken or there is something wrong?
Even if he port job was shitty, you will gain more horsepower than stock heads.
Anyways something weird happened today,we raced a full bolt on 06 GTO that put down 354whp & we kicked the crap out of him im really surprised we were about 4 cars ahead we tried from dig and from a rolling.
either the dyno is mistaken or there is something wrong?
Anyways something weird happened today,we raced a full bolt on 06 GTO that put down 354whp & we kicked the crap out of him im really surprised we were about 4 cars ahead we tried from dig and from a rolling.
either the dyno is mistaken or there is something wrong?
Nice job on the kill, the GTO's are very heavy, remember that.
Hurry and get those headers and 1.6 rr's on there and get it retuned.
