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tx996tt tx996tt is offline
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Join Date: Oct 2010
Posts: 14
The 2.7 is not the best base to modify. That said, a V belt set-up will limit boost to around 4 psi. The effective compression ratio (CR at peak boost) will be 10.8:1 assuming your static CR is still factory 8.5. For comparison, the effective CR on my SC is 17.8:1 at 1 bar.

At 4 psi, consider if it is worth the effort/cost/risk. Estimate 20% power gain (5% per 1 lb boost). Considering a stock 76 made 165hp, estimate 200-205 flywheel hp SC with improved torque. Increase weight will mitigate the power gain. The Paxton head unit and mounting bracket weigh 28 lbs plus add in the weight or a tea tray wing. I would be concerned with the look of the the tea tray spoiler if you have less than SC flares. I changed the rubber to 3.2 Carrera to help with the proportion. If it was me, I would build a hotter 2.7 NA motor and take weight out of the car as previously suggested.
Old 07-03-2020, 07:25 AM
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