WebApr 2, 2024 · That said, the added flow and compression of the 243 heads produced our best overall numbers of the session with a power peak of 505 hp coming in at 6,200 rpm. That's 2 hp shy of the LS3's peak,... WebMay 24, 2013 · PROMAXX previously the Patriot freedom series SBC Aluminum head. I am building a 350 for my 1969 Nova. Save Reply Quote NovaLou Registered Joined May 20, 2013 71 Posts Discussion Starter · #5 · May 21, 2013 Peak HP 420 at 5,900 Peak TQ 417 at 4,300 Valve Sizes 2.02/1.60 Intake Port 185cc Chamber 64cc Valvesprings 1.430-inch …
Building The Little 383 Small Block That Could - Chevy …
WebSep 30, 2024 · Promaxx 9175 sbf flow numbers by travis » Sun Sep 29, 2024 4:05 pm I was pretty stoked after getting the intake numbers, then kind of bummed over the exhaust numbers. Here’s what we got... Intake .025”...15 cfm .050”...31 .100...63 .200...128 .300...179 (passed my ported E5AE’s at max flow) .400...226 (passed my ported D0OE’s at max flow) WebMar 29, 2024 · Here are some flow numbers I found on the BB 320 head: Jack Here are the flow bench results: ProMaxx head, factory valve job, 4.31 bore. This is with a Ferrea 6000 series 2.25 intake with a 30* back cut and a BBB 1.88 stainless ex. left port / right port/ ex .2 158.8 / 155.3 / 117.4 .3 230.6 / 238.0 / 157.3 .4 287.8 / 294.9 / 190.7 poly for drywall
383ci Budget Chevy Stroker Makes 610 lb-ft on the Dyno! - MotorTrend
WebMar 8, 2016 · With the good service I got from the guys in the shop at Pro Maxx on the LS head I would not hesitate on considering them. Adger Smith Adger Smith Performance Engines 903 794 7223 shop 903 824 4924 cell [email protected] e-mail EthylCat Pro Posts: 232 Joined: Wed Jul 12, 2006 4:02 pm Location: Midwest Re: Promaxx 317 BBC … WebSmall Block Chevy ideling at 1400rpm.. 12-1 compression, .672 lift cam, forged 4340 crank, forged h-beam rods, wiseco pistons, Promaxx 225cc cnc ported heads... WebMar 17, 2024 · The the valve guide boss has been contoured with the bridge left behind the guide for "steering" The area on both sides of the guide boss has been opened up and deepened for flow. The intake flowed 218 cfm at .500" lift and 225 cfm at .600" lift but continued to flow with a slight increase as the valve was open further. shangyuan festival