After 4 years of evolution and tuning/tweaking, my 8v is finally done. My goals have been a 13.99 in the quarter mile, or 150+ wheel hp. My quarter mile goal has been elusive, but yesterdays dyno session nailed it.
159whp at 6900rpms
135wtq at 5600 rpms
I hope to have the dyno chart scanned in later today for all to enjoy. AFR was 12.7 for max tq instead of 13.0 for max hp, but after trying it both ways, the diff was so small I went with 12.7.
Interestingly, retarding the cam timing absolutely killed the hp/tq. I was going for that one big hp # at the expense of tq, but it just wasn't there. Back to the "street/track" set up and those are results....
So..... last time I dyno'd, I made 128whp, 138 wtq. The differences between then and now.......replaced the Brospeed header with a TT race header. Replaced CIS with MegaSquirt. Replaced the factory port matched intake mani/A2 tb with a set of Puma Racing ITBs. Oh, and the Schrick 280 was replaced with a DeltaCams 300+. Net results, anther 30 hp and a loss of 3 ft lbs. Not a bad trade off
That said, this engine is DONE! Time for another project. Anyone interested in a set of of PumaRacing ITBs and a dcoe mani for an 8v? For sale soon at a Vortex location near you......
Modified by Andrew Stauffer at 5:47 AM 9-17-2004