Thread: Big block chevy heads

Tweet

I am slowly building a 496. I plan on using some things from my 402...intake, headers, pan, timing cover, and heads. The heads are 292 casting. Does anyone know if these heads would be suitable? They are 113cc with 219/ 188 valves and pocket ported. Exhaust runners smoothed out and short side cleaned up. The cam is a hyd roller 242/248 .560/.578 110 lsa compression will be a bit over 10 to 1. The 292 casting is similar to the 820.
Does anyone have any experience with these heads? Thankyou

shure i have used many over the years . do i have flow numbers on them NO. did they work on the builds i used them on yes . is there better heads for the 496 yes .but for a low buck build i would re work them and use them if that is the only thing i had on hand

Thanks again Pat

I would recommend 781s or 049s those seem to be the ones everyone wants for a 496 Stroker !! OVAL PORT - Valve size 2.06 intake, 1.72 exhaust
Casting Years CID Chamber CC HP/RPO/Comments
330864 1970-81 366/427/454 Open
330865 1970-84 366/427/454 Open
336765 1973-84 427/454 Open
336781 1973-85 454 Open 113.0cc
343771 1968-85 366/427/454 Open
343772 1976-84 366/427/454 Open
343783 1975-78 454 Open car & truck
346236 1975-87 454 Open 113.0cc
346238 1975-87 454 Open 113.0cc
353049 1970-73 402/454 Open 113.0cc
473328 1968-85 366 Open
3856206 1965-66 396 Closed 325 97.2cc
3856213 1966-70 366 Closed truck
3872702 1966 396 325, 360 L-34/L-35
427 Closed 390, L-36 98.4cc
3876875 1966-70 427 Closed truck
3904390 1966-67 396 325, 350 L-34/L-35
427 Closed 390, 400, L-36/L-68 98.4cc
3904393 1966-68 366 Closed truck
3909802 1966-67 396 325, 350 L-34/L-35
427 Closed 385, 390, 400, L-36/L-68 100.9cc
3917215 1967-69 396 325, 350 L-34/L-35
427 Closed 335, 385, 390, 400 100.9cc
3917219 1966-70 366/427 Closed truck
3931063 1969-70 396 325, 350 L-34/L-35
427 Closed 335, 385, 390, 400 100.9cc
3933148 1969 366/396 Open 2V/427 265 122.1cc car & truck
3933149 1969-70 427 Open 122.1 cc truck
3964280 1966-70 427 335, 385, 390, 400
454 Closed 345, 360, 390 LS-5
3964290 1969-70 396/402 325, 330, 350
427 335, 385,390, 400
454 Closed 345, 360, 390 LS-5 100.9cc
3965198 1969 396 truck
3975950 1968-70 366/427 Closed truck
3986133 1970-85 366/427 Closed truck
3986136 1970-84 366/427 Closed truck
3993820 1971 402 300, 330 LS-3
454 Open 365 LS-5 113.0cc
3999241 1972 402 240, 300, 330 LS-3
454 Open 365 LS-5 113.0cc
6272292 1971 402 240, LS-3
454 Open 270, LS-5
10101136 1991-94 454 Open truck
10121033 1978-88 454 Open truck
12352783 1979-93 454 Open truck
14025175 1983-93 454 Open truck
14081044 1986-90 454 Open truck
14092359 1986-89 427 Open truck
14092360 1985-89 454 Open truck
14101398 1986-90 454 Open truck

Very nice, but since this post is 3 years old I would imagine the OP has finished this and gone on to other things.