DR Js 468 ported brodix heads

[grumpyvette]

http://www.j-performance.com/

POSTED THIS


460 Dyno test AIRWOLF 305 heads
I know I haven't posted here much lately but I thought you guys might be interested in this 460 pump gas engine we just finished up. It's a great example of the HP you can make with off the shelf parts

Engine Specs

4.280 X 4” stroke
JE SRP Pistons 23cc dome 11 to 1 compression .040 quench

Procomp H-beam rods
Factory steel crank

Comp Cams Mega Thumper Hyd roller 243/257 @ .050 .570/.554 lift
107 LSA installed on a 102 ILC
PRW 1.7 stainless rockers


AIRWOLF 305 oval port heads (Brodix casting)
2.25 intake valves 1.88 exh
Edelbrock Performer RPM air gap intake (gasket matched)

Holley Street HP 950
HVH 1 inch spacer
HEI distributor

Dyno Headers are 2-1/8 to 2-1/4 4 inch collectors

(while the results were good Id suggest a few changes if i was building a similar engine( POSTED in green) A BIT MORE LIFT AND A BIT LESS EXHAUST DURATION WOULD USUALLY HELP INCREASE POWER IN MY ESTIMATION, AND pro-comp CONNECTING RODS ARE GENERALLY WEAKER THAN scat RODS
(scat 7/16" CONNECTING RODS) http://www.summitracing.com/parts/sca-2 ... /overview/

THIS CAM I POSTED ABOVE,BUT HAVE IT CUSTOM GROUND ON A 106 LOBE CENTER-LINE

HERES A DIFFERENT 454 low cash big block build
http://www.carcraft.com/techarticles/cc ... ewall.html

 

[grumpyvette]

BTW I GOT ASKED WHAT I USED IN a rather similar 468 cubic inch LOW COST BUILD for a buddies 1969 camaro,and keep in mind this was built mostly with existing parts from used engines, I be amazed if this engine cost more than 60% of what it cost to build the engine listed above, and remember this engines built with common parts and a flat tappet solid lifter cam not a roller cam like the engine posted above,
just because an engines (OLD SCHOOL) doesn,t mean it can,t be fun to drive, and an old school high compression solid lifter 468 big block in a camaro with a muncie and 4.11:1 rear gears can put a grin on your face
it was just a basic old school big block, in a 1969 camaro with a muncie trans and a 4.11:1 rear gear
starting with an older LS7 aftermarket over the counter short block bored .060 over size with new 11:1 compression pistons
a crane 131141 (the crane version of the chevy ZL1 3959180 flat tappet cam
we used ERSON roller rockers, and manley push rods, and MICKEY THOMPSON TALL CAST VALVE COVERS
AN EDELBROCK ALUMINUM WATER PUMP and a MODIFIED MOROSO OIL PAN

edelbrock super vic rectangular port intake, holley 850 cfm carb with 2" adapter

http://www.summitracing.com/parts/hly-0-4781c
http://www.summitracing.com/parts/edl-6 ... /chevrolet
edelbrock aluminum rectangular port heads
hooker headers
http://www.summitracing.com/parts/hok-2457-1hkr

and a custom oil pan that held extra oil and we added an oil cooler,
keep in mind he had some of the parts on hand from a previous build so we used what we could and bought what we needed

and before someone else mentions it, yes he needed a fiberglass hood with a bit taller hood scoop to clear the air cleaner