Looking to put aluminum heads on my 468 this winter. I'm planning on just freshening up the engine. Might put a little bigger cam in it. has around 670 lift right now. (I didn't build this engine, just came with the car.)
Currently runs Low 6 teens - Mid 6.0 with 990 iron heads in 3050 lb car. Anyone have any suggestions for cylinder heads other than Brodix or Dart?
Not looking to blister the track. More than anything I just want to get the extra 80 or so lbs off the nose of the car.
Just looking to shift at about 6800 rpm running 1/8 mile.
July 30, 2021, 06:48 AM
qtrrcr
I have a set of blueprint 8013 heads on my 496. I had them on my 468 also before I made the cid larger. Has worked very well for me on both engines.
July 30, 2021, 10:09 AM
BP758
quote:
Originally posted by Holytown: Looking to put aluminum heads on my 468 this winter. I'm planning on just freshening up the engine. Might put a little bigger cam in it. has around 670 lift right now. (I didn't build this engine, just came with the car.)
Currently runs Low 6 teens - Mid 6.0 with 990 iron heads in 3050 lb car. Anyone have any suggestions for cylinder heads other than Brodix or Dart?
Not looking to blister the track. More than anything I just want to get the extra 80 or so lbs off the nose of the car.
Just looking to shift at about 6800 rpm running 1/8 mile.
Edelbrock, Pretty sure your 990 heads are closed chamber? Might have to angle mill then flat mill to get combustion CC down too where the 990 is.
California Screaming! Raceless in California!
July 30, 2021, 10:36 AM
Mike Rietow
quote:
Originally posted by Holytown: Looking to put aluminum heads on my 468 this winter. I'm planning on just freshening up the engine. Might put a little bigger cam in it. has around 670 lift right now. (I didn't build this engine, just came with the car.)
Currently runs Low 6 teens - Mid 6.0 with 990 iron heads in 3050 lb car. Anyone have any suggestions for cylinder heads other than Brodix or Dart?
Not looking to blister the track. More than anything I just want to get the extra 80 or so lbs off the nose of the car.
Just looking to shift at about 6800 rpm running 1/8 mile.
CC the current combustion chamber 990 open chamber, then bolt a set of CNC ported Brodix BBC heads retaining the same compression ratio you have now.
The car runs good according to the info you've given, so the 990's probably have some thought / work in them, so CC the combustion on them, for matching compression ratio of the current configuration, with the new configuration.
Or just max the compression with a new piston and Brodix CNC ported aluminum head.
What you don't wanna do is bolt aluminum heads on it and lose compression/ POWER.
July 30, 2021, 11:09 AM
SCDIV1
990's are Open chamber heads
2.19-1.88 valves and around 119 cc's
They were over the counter replacements and came on LS-6 and LS-7 crate engines.
188's are the same head with hardened exhaust seats
With a typical dome piston and 119 cc's you'd be probably at around 12-1 compression
Smallish intake runner heads with about 115 cc's would be best....something around a 320 intake runner...
Lose some weight, push the compression up a little.....more squeeze never hurts....
July 30, 2021, 11:20 AM
BP758
quote:
Originally posted by SCDIV1: 990's are Open chamber heads
2.19-1.88 valves and around 119 cc's
They were over the counter replacements and came on LS-6 and LS-7 crate engines.
188's are the same head with hardened exhaust seats
With a typical dome piston and 119 cc's you'd be probably at around 12-1 compression
Smallish intake runner heads with about 115 cc's would be best....something around a 320 intake runner...
Lose some weight, push the compression up a little.....more squeeze never hurts....
Then the Edelbrock will bolt right on! Thanks Rich. I’ve never seen nor had 990. Lots of 291. 840 and 208. Iron
I missed the open chamber in his first sentence...! I didn’t miss the ; other than Brodix/ Dart.
California Screaming! Raceless in California!
July 30, 2021, 11:37 AM
Mike Rietow
You can get a Edelbrock with a 100, 110 or 119cc combustion chamber.
Killer street head, but don't flow anywhere near even wing wong ching chong heads.
I got a set of new wing wong ching chong PC 3021's I'm putting on a 460 cid BBC I'm building now, I'd trade for 110cc combustion chamber oval port Edelbocks. I'd lose some power too though, because of the flow numbers between the two heads.
Who wants to trade?
I sell em outright too, $1500. Who wants em, they flow 360 @ .700 lift.
July 30, 2021, 11:45 AM
B.C.Malibu
What’s a GM 4026 head other than open chamber Ret port?
1) Don't buy anything that the cone crushers recommends or sells! 2) As already stated AFR, Brodix, Dart and Eddy have a number of good heads in the 325 cc intake runner size!
July 30, 2021, 02:17 PM
TD3550
Someone i know.. Ya they went into the dumpster. Surprised the seats didn't leave the area first. 2.5 months old.
This message has been edited. Last edited by: TD3550,
July 30, 2021, 02:28 PM
nomad
It appears you're not trying to turn the planet.
My pal that owns the engine shop in my signature just put a set of Brodix Racr Rights on a BBC. They made good power.
nomad Bruce Guertin
Easily distracted by bright shiny objects.
Wife says I'm a new adventure every day.
Call Automotive Performance Engines for all your complete engine building, dyno service needs 863-967-8781
July 30, 2021, 04:57 PM
1320racer
There are easier and maybe cheaper ways to shed 75lbs. Besides the fact that you don’t want castings from the two best companies nor are you looking to “blister the track”
July 30, 2021, 06:09 PM
Lenny5160
I have Brodix Race Rite ovals on my 468. The intake runner is tiny at I believe 260 cc, but my car is heavy and runs exactly what I want it to. I always skew small on cylinder heads and headers. Dyno numbers are never impressive but ET usually is.
I had a set of Chinese heads on it before, and the entire #7 intake stud/spring/rocker came out in one piece in the middle of a $10k race.
Tony Leonard
August 01, 2021, 12:23 PM
Alaskaracer
A couple of racers here run RHS heads....one an n/a dragster that's a 7.70 car......just an option
Mark Goulette Owner/Driver of the Livin' The Dream Racing dragster www.livinthedreamracing.com "Speed kills but it's better than going slow!" Authorized Amsoil Retailer
August 02, 2021, 05:42 AM
Busted Knuckles
ProMaxx 317's
Organized people are just too lazy to look for their $h!t.
August 02, 2021, 03:00 PM
Holytown
quote:
Originally posted by Busted Knuckles: ProMaxx 317's
I had a set of those heads on another car and they seemed to work really well. Also about half the price of Brodix and Dart
This message has been edited. Last edited by: TD3550,