I PM'd KenP on this to get his take on it.
I did not do a 0 to 60 before adding all the after market stuff.
Long neck dynotech stainless catback header sys.
40 series flowmaster dual exhaust sys. custom installed and shaped for best flow by a Pro Exhaust Shop. Improved on exhaust flow but did not mess with header and cat-back much.
Cold air intake by a multiple SEMA award winner from My area. Just helped Me feel better about getting something for My money other than hype.
T-body spacer came from same co. as air intake makers.
Fast Flash handheld perf. programer from same co. that got SEMA for all 3 items mentioned. Comp Cams bought there programer patent they liked it so much.
Throttle body coolant bypass kit to lower air intake temp. Made Myself to insure quality.
Taylor perf. spark plug wires. Have run many years on other apps and the Perf. store I use runs many kinds of cars themselves and builds race engines and have seen with own eyes this is what they use.
Ordered GM dual electric cooling fan sys. with computer tie in to control fan operation. Turn on at 180 degrees. Should gain around 15HP @ Tor
160 degree Ligenfelter thermostat waiting to be installed.
DID MULTIPLE RUNS AT DEAD STOP TO TIME 0 TO 60:
10 seconds on the money.
No tranny preload just dead brake to accelerator foot move.
I did not time before installs so do not know what gain was.
I have added weight since bought. 325X60/20 and rims, Many thousands on billet to replace plastic. Can't estimate weight increase but enough to make diff. so i removed spare and brackets to help some.
Now point being, KenP with SC runs 0 to 60 in 6.5 seconds and has been 6.44 I was told by others. I have video of a Ford turbo lighting losing to Ken.
I have another video of a rice rocket losing to a stock H2 with Radix SC.
I do not in anyway believe I could do this. I may surprise them with a scare though.
But, I have had the fun of increased HP and torque enough to surprise many little cars and f-bodies who think the H2 is a big lunch wagon. My Girl will put You back in the seat and not let up till I let up. It is a very enjoyable ride and thrill for the money spent. If You do not want to spend the kind of money it takes for SC and tuning etc. It is a valid way to get some pep beyond Your expectation and imagination. It will improve towing as i have some hills in north Arkansas to lake that use to make Me down shift and up shift alot and that has been reduced alot. Probably, as I did not keep count, under $2950 with custom labor.
I can get some more perf. gain if i ran high oct. in perf. setting but, I run regular unless I'm towing. Have no problem with preignition but, I do not recommend You do this as I have reduced temp to help that and I have experimented with My other vehicle as it is set up with much the same except exhaust sys. I get no PING AT ALL. It is My decision if I have to buy an engine so if it goes I'll have a Ligenfelter 427 ported, polished, blueprinted. with SC and 750HP plus. I think from what I've read maybe 1000HP with some other addons and tuning if I turned them loose with it. They build what will be safe for every day use by the consumer. I'm impressed enough with just a stock engine with SC I'm working on adding that or twin turbo but, lean towards SC. Waiting to hear from Ligenfelter about maybe letting them have My girl for a week to install what ever i decide on.
It is a matter of what You want to spend and accomplish.
I have raced all My life and I do not believe unless taken in person and seeing it with My own eyes a set of headers will perform like SC.
TAZ (Rick)