SBC Brodex heads
 

Selling 2 pair of Brodex IK heads fully assembled. They are Mil spec hard coat anodized, new never installed 1600.00 a set. Will dig them out for pics soon. Will need to PM Email for pics

I am interested please send me specification and photos to [email protected]. Thanks

Email sent

Checked with a friend that used to work with porting heads (we designed the 18x Brodix heads) for a price to port them. He gave me a figure of 625.00 extra a set. Air flow should end up close to the 210s at lesser port volume.

Im interested... email me at [email protected]

Email sent

Bump

These heads are now being ported by one of the best shops I know of. He designed the Brodex 18X heads. Will have air flow numbers and price change in the near future.

Got to go up north actually to look for a rear end assembly to build up for my car and stopped by to check on the heads and drop off a Torqer II intake.
He has flow tested a couple ports for a baseline and they flowed better as cast than advertised by a bit. Going to flow the intake bolted to the head in the future. Have intake bolted to head flow numbers for some SBF intakes but first chance to do a Chevy Torqer II SB

As a plug for Turbo, stock IK180's with valvespring upgrade, on a stock 260hp Mag 5.7 shortblock and mild 218/224 Comp HR just went 72.8 on a 20ft sportboat with Alpha SS. More to come as it overeved with it's current prop. 6200rpm. LOL.

Just got some info on the port work. As cast tests were for the most part right on with Brodex advertised numbers. He thinks intake port CCs went from 180 to 190, he will be verifying that before finished. He gave me a .600 lift figure of about 280 CFM. He also flow tested a Torker II on the as cast port it flowed about 225 CFM but didnt give me at what lift point it stalled out at that flow. Of course it depends a bit on just how much the heads flow as to were it happens.
Sounds like they would be great heads for a 383 or larger engine

What size chamber on these?

They are the 70cc chambers

Price on heads new as purchased with hard coat military speck anodizing 180 IK Brodix heads. Cost 2000.00. Dropped the price to 1600.00. Now with port work added 800.00 to the price now 2400.00 a pair. Should have flow number sheets and heads next week. They are not used never been installed.

What did it run before heads and cam upgrade?

52mph best. Stock Alpha. Stock motor. No muffler inserts.Note: Water speedo said 59 and change. LOL.

With engine upgrade, 68.1 absolute best. Stock Alpha (muffler inserts removed/1ft chop, down wind, light fuel, flame arrestor removed..ie: early fall banzai run)

Same fuel load / weather condition as that Alpha SS run, 65mph.

That SS run (72.8) was not a test run and boat had a bunch of fuel, flat water, bunch of fuel, muffler inserts in, etc,etc. Did a quick blast to accelerate past a friends boat that happened to be travelling by), looked at guages quickly and noticed motor was at 6200rpm (still accelerating) and pulled back right then. This motor should peak around 5400-5500rpm. Gathering more props for next year.

Nice results!

Just got back from picking up the heads will post results tomorrow tired 400 miles of rain and traffic.

____Intake flow_______/_______ Exhaust flow
____As cast___Ported_/__As cast____Ported______W/pipe
-Lift
.100__ 68_______71_______------________59_________59
.200_143_______149______112________128________128
.300_195_______210______149________168________181
.400_227_______262______167________189________208
.500_242_______288______175________198________221
.600_250_______292______178________203________232
.700_251_______290______-----________204________237

They are CNCed and then hand blended

Pictures now available through Email

Intake port volume 198cc Air speed was good meaning close to 300

While at it flow tested a Torker II as cast bolted to these heads before and after port work.

before porting heads--------- after porting heads
----- lift----CFM-------------------------CFM
----.100----- 68----------------------------68
----.200----142---------------------------143
----.300----192---------------------------195
----.400----221---------------------------227
----.500----229---------------------------242
----.600----229---------------------------250
----.700----229---------------------------251


The Torker with about a .550 lift cam and good exhaust should be able to make peak power
514 HP @ 5300 RPM with 400 cu in engine
500 HP @ 5600 RPM with 383 cu in engine

Either would rev higher but power would be falling off

bump