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ripdog28 · 10-16-2009, 06:13 PM

Smoken, i have a small disagreement with your statememt on the 177 not working. I have seen front to back test of the 177 and 8-71 on the same BBC. The 177 was worth its money in the mid RPM range. they were with in 50-80 HP most of the curve and the only place the 8-71 really showed was in the 5k+ where it got up to 150HP more depending on pulley size. I do know the 177 was pushed to about 5 psi where it normally pushes 3. I can not find the article but will post it if i find it.

I agree with you saying that they take HP to turn. The place that the 8-71 failed was the lower end because it takes a lot more hp to turn it. They were doing a COST EFFECTIVE comparison. If looking for all out HP of course 8-71 but for the price diffrence, your paying $2k more for about 100-150 HP. The 177 and 8-71 were under around 50hp diffrence untill they bumped up the 8-71 psi and RPMs.

10-16-2009, 06:13 PM	#19
ripdog28 Registered User Join Date: Apr 2008 Location: Imperial Beach, CA Posts: 1,040	Re: BBC Build and Questions. Smoken, i have a small disagreement with your statememt on the 177 not working. I have seen front to back test of the 177 and 8-71 on the same BBC. The 177 was worth its money in the mid RPM range. they were with in 50-80 HP most of the curve and the only place the 8-71 really showed was in the 5k+ where it got up to 150HP more depending on pulley size. I do know the 177 was pushed to about 5 psi where it normally pushes 3. I can not find the article but will post it if i find it. I agree with you saying that they take HP to turn. The place that the 8-71 failed was the lower end because it takes a lot more hp to turn it. They were doing a COST EFFECTIVE comparison. If looking for all out HP of course 8-71 but for the price diffrence, your paying $2k more for about 100-150 HP. The 177 and 8-71 were under around 50hp diffrence untill they bumped up the 8-71 psi and RPMs. __________________ 69 c-10 BBC 462ci, forged crank, H-beam rods, 10.5-1 KB forged pistons, Dart Iron Eagle 308cc, Straub Cam, Comp Cams chrome moly full rollers, Weiand Team G, Prosystems 950, TH400/3500 Dalenzie stall, Currie 9+ Detroit Locker w/31spline axles.3.5/6in drop. My Build. Last edited by ripdog28; 10-16-2009 at 06:18 PM.