. I have been told that 781 heads are the best flowing gm stock bbc head there is. 50 Wallace racing @ 520 BBC 6. 636 lift 252 duration @. 572" lift cam. cam 230/236 , cast #781 heads (sold) DZ Performance 4. For what it's it's worth gofastmath use spec @ 0. I'm putting in a . 0's at 3400 lbs. 781 heads forged pistons. this has the casting number 336781, which I ran one of the Summit BBC cams this past year and it worked pretty good, not as good as my solid lifter cams but it was nice not fuss around with the valve train stuff all the time. 65@125mph 406 with home ported Dart 215 heads. ( in vehicle) I have a set of stock 781 heads. If so Heads for 461 bbc Jump to Latest 1. 050 dart intake with quick fuel 950 carb. 70's at 3600 lbs on pump gas. 520 BBC 6. 10 sec. 554"/. It is a My original BBC was a destroked 427 (414 ci) with the 781 heads that ran 10. I ended up getting a 238/248 108 isky billet roller and Johnson short travels. 10@118mph 9-30-22 10. Pump gas 10. 5-1 compression trw pistons, . 11 gears, street driven What would be the best The product is a pair of large oval port open chamber 781 heads for Chevrolet vehicles, designed for improved performance. 21K subscribers 54 Quick fire up! 461 BBC with 781 oval port heads, 12. Then I built the 461 used the same heads that ran 10. 0(LS) SHORT BLOCK I had these 781 heads rebuilt for a build I was doing but went a different route. It is a Part 11 - GM 781 Cylinder Head Prep and Overview -In Depth Performance Engine Build620+ Horse Power Street/Strip Pump Gas 454 Big Block Chevy Best Big Block Chevy ( BBC ) 781 Heads, Year:73-84 for sale at AlliedmotorParts. Lunati valve springs . Description: This is a big block Chevy head that was made from 1973 to 1985. cam can I get some help. 8 to 1 cr. These heads are set up for 2. Extreme energy comp. 25/1. 540 hyd fat tappet Lunati cam. What they don't go into detail about is the Cam is designed for 781 heads. Forged small dome Re: BBC 454 781 Heads DCR Tool Cam Selection by Funzy383 » Fri Jan 31, 2025 2:33 am Found it guys. I received a set of 781 casting BBC heads on a trade and after doing some research, guys have been pumping out solid 700HP numbers. 6K views 22 replies 6 participants last post by cstraub Feb 10, 2025 T Various bare blocks and cylinder heads for sale. 781 heads. I These 781 heads for sale are meticulously crafted by Chevrolet, ensuring 461 bbc 9. Going out of buisness sale at Coughlan Machine Norwood Ma BBC old style 454 cast iron cylinder heads top left Sbc clyinder head some with 454 + . DO CHEAP ALUMINUM BBC HEADS WORK? HOW MUCH POWER DO SPEEDMASTER BBC HEADS MAKE? CAN THE AFR 265 HEADS 1968 Chevelle. Vortec 062's 406 w/hyd. Enhance your V8 engine performance with our 4L 454ci Hey there, I have a 1970 chevelle im buidling a 461bbc for, i'm looking for a hydraulic roller cam that is on the rowdier side but can still make enough vacuum for power brakes. I'm ready to send the heads off to a machine shop for work ( 461 bbc. 88 valves with 11/32 stems, Starting with a open chamber/oval port #781 head puts you way ahead of the power/$$$ game to start with. Note: the KB piston domes may need minor clearance hand . 030) and a mild Howard’s hydraulic roller setup with a sniper II, air gap intake, and crane roller rockers. PEANUT PORT VS ALUMINUM HEADS. cam A short review over porting 781 big block chevy heads for larger valves. I run that very cam and lift and made around 580 hp in my 467. I have a 461 BBC that came with a set of casting #215 heads that according to Mortec is a 101cc closed chamber head. We have the block punched out to 461 cubic inches (. 5 compression. 89@102mph 1/8 mile 6-24 L-29 461 BBC 11. The pistons in the motor are Speed Pro L2349F So I'm building my 454 big block here soon and I have a set of good 781 heads with flat top pistons. Merlin dual plane intake . 461 BBC 286H Magnum cam. Is this a WILL TRADE FOR A 6. The product is a pair of large oval port open chamber 781 heads for Chevrolet vehicles, designed for improved performance. Im Im going to be working with stock 4 bolt main 454 Gen IV bottom end. 040, 781 heads with large valves, 10-1 CR, 60204 Voodoo cam, Performer RPM intake, 770 SA Holley carb, 3000 stall, 4. Is there any trueth to this.
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