just4bob50
Active Member
Daggar said:Ok... let's take a step back then and change my suggestion to this:
Get her on the dyno and see where you're making power. 410s and an automatic may be putting your shift points beyond the usable power range of your heads and cam (thinking out loud here). Next, start looking at your entire combo and figuring out where your bottle necks are. When you've got your combo set up so that your intake and modded heads have shifted back to being your bottle neck then you'll at least know that you've squeezed all you can out of those mods.
All too often, I've looked at dyno graphs for stock headed, stock cammed, motors where the torque an HP are falling off at around 4500 RPM. If your Heads, cam, and intake, are capable of making usable power beyond that range but your exhaust is not, then yeah!... the H-pipe COULD be worth 5/10s.
It's not to point the finger soley at just one mod (or lack thereof) but to try and illustrate the potential for a lacking support item to effect the combination. How many times have you seen a magazine add boast 35HP gains from an exhaust system, only to find out that the test vehicle was already modified. Something as simple as swapping exhaust doesn't GIVE HP. All it does is free up what's already there.
I understand that you're already aware of all this stuff but I type it all out to illustrate my point. The COMBINATION is what needs to be good. Not just a select few parts of it.
Willy's 1 i agree that there is deffinatley 1 or 2 items that may be miss matched to your combo. I also think that you are on target for your power estimates if there is a good tune and all supporting mods match up. I personally have run a best of 13.52 at 101.9 w/ a 1.96 60ft. In my full weight vert. Even left the spare in the trunk. This run was done with the stock heads and cam, but with all my current intake and exhaust parts. When the car was (NA) it dynoed at 247rwhp and 290 tq. on a Dynojet dyno. I think it would be very usefull to put you car on the dyno for a few base pulls to check out where the power is being made, and to make sure your tune is as good as you think it is. Also in 90 degree weather i could only pull 13.8's and 13.9's at the track. 13.50's in 50-65 degree temps. good luck.