A pretty stock IX on e85

I think with everything else at optimum, meaning porting and all the other supporting mods we will see 400 on stock cams/turbo in the new year.
Thread Starter
Joined: Jan 2004
Posts: 11,406
Likes: 78
From: Northwest
I looked through my big list of cars over the years and the best I saw for a stock cammed IX was 402 with an average of 392. It was a 10:1 motor though. Its hard to say, if people near you on the dyno you use make 380whp with basics and E85, then there is a good chance you will be there or above
Thread Starter
Joined: Jan 2004
Posts: 11,406
Likes: 78
From: Northwest
Update-
I got the valvesprings out of the car only to discover that they looked like this:

Changes since the initial post are:
Sparktech Non CDI COP and FP Beehive valvesprings. The cams, injectors, fuel is still all the same. Here is the power-
I got the valvesprings out of the car only to discover that they looked like this:

Changes since the initial post are:
Sparktech Non CDI COP and FP Beehive valvesprings. The cams, injectors, fuel is still all the same. Here is the power-
Thread Starter
Joined: Jan 2004
Posts: 11,406
Likes: 78
From: Northwest
Yeah those were out of my car. If you look at the first dyno graph its cropped past 6900. In the next 200rpm it lost 70whp so I wasnt going to talk about it until I knew for a fact I had a broken spring or severe valvefloat. Either way I knew they needed to come out.
Brief story-
Stock valvesprings went 1.5 seasons of dragracing and hard street driving (jan 06-aug 07) with a normal trap rpm of 8300. This is when I had the 6 speed in the car. They saw 8700 on 3 seperate occasions and went 28k with no issues.
These springs I will for now call Brand X, went 12k (season or less) with the same driving style. The same normal trap rpm, 2 or 3 trips to 8500+ and then when I took it to the dyno and it was obvious something wasnt right.
Now its on FPs and I will never go back (unless I need more rpm at some point).
Brief story-
Stock valvesprings went 1.5 seasons of dragracing and hard street driving (jan 06-aug 07) with a normal trap rpm of 8300. This is when I had the 6 speed in the car. They saw 8700 on 3 seperate occasions and went 28k with no issues.
These springs I will for now call Brand X, went 12k (season or less) with the same driving style. The same normal trap rpm, 2 or 3 trips to 8500+ and then when I took it to the dyno and it was obvious something wasnt right.
Now its on FPs and I will never go back (unless I need more rpm at some point).







