I'm currently restoring/ hot rodding my '70 Nova and I want some better heads for it. It's an early style LT1 with ported double hump heads, 2.02 valves, cam, Holley Strip Dominator intake and a modified Holley 750(about 850cfm). It also has a 3500 stall, and Eaton rear w/ 3.73 gears. It's gonna be more of a pro street car than a street car. Anyway, I've been set on the AFR 195 or 225 heads, but I was wondering how everyone felt about the BIG PORT Trick Flow 23* and Victor Jr 23* heads compared to the AFRs. I will also be switching to a Comp Cams Extreme Energy cam as well. So do you think I should stick to the AFRs? They seem to be the hottest thing going lately and seem to make incredible power. Thanks for the help.

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Procharged and intercooled '94 Mustang GT. 436rwhp, 428rwtq on old fuel system and boost, and way outta tune. 7.31@100mph 1/8, 11.47@118

'95 T/A- A4 Borla y-pipe,Hooker cat-back, gutted cat, LT4 KM, CAI, foil. 8.58@84 1/8
'70 Nova- 355ci LT1, forged pistons, ported and polished double hump heads w/ 2.02 valves, 1.6 roller rockers, lumpy cam, longtubes, 750 Holley reworked to about 850cfm, 350 trans w/ 3500 stall and shift kit.
Check outMY SITE

[This message has been edited by Daniel Mitchell (edited September 13, 2002).]

 

WWW.BRODIX.COM

How big is your motor going to be and what kinda application?

 

A buddy of mine is building a 4th Gen w/ Gen 1 SBC to compete in the PRO-Edelbrock Xtreme Street class.... with the choice of virtually any 23deg head available, he went with Brodix.

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Fred
94 Formula A3+1: 381/TH400+OD/N2O

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11.513@115.59 on motor; 11.162@127.67, 1.643 60' on a 125-shot. Going with a 275-shot this year

 

It's a 355ci LT1 w/ forged pistons. I'll have to check out the Brodix. Thanks.

 

Whew, $1849.99 for the 23*! Are they really worth the $$ over the others? Thanks again.

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Procharged and intercooled '94 Mustang GT. 436rwhp, 428rwtq on old fuel system and boost, and way outta tune. 7.31@100mph 1/8, 11.47@118

'95 T/A- A4 Borla y-pipe,Hooker cat-back, gutted cat, LT4 KM, CAI, foil. 8.58@84 1/8
'70 Nova- 355ci LT1, forged pistons, ported and polished double hump heads w/ 2.02 valves, 1.6 roller rockers, lumpy cam, longtubes, 750 Holley reworked to about 850cfm, 350 trans w/ 3500 stall and shift kit.
Check outMY SITE

[This message has been edited by Daniel Mitchell (edited September 13, 2002).]

 

I'd also like to keep it below 7000rpms. It looks like Summit has a great deal on the total Brodix package, which inclused Track 1 heads, single plane intake, spark plugs, valve covers, and intake, exhaust, carb, and valve cover gaskets. Plus the valve cover studs, nuts, head bolts, washers, and intake bolts and washers! If the heads alone are $1850 then this is a great deal. But it says it makes power from 4000rpms to 8000rpms, which is a little high I think.
I assume that to make any power with this combo I would need a roller cam huh? I'd like to stick with the flat tappet for right now. What do you think?

 

the Track 1 heads always deliver....you can get them for $1300 complete

They flow OK out of the box but with some mild clean up are much better and even with a medium port flow very nice numbers. The casting from brodix is just rough.

My mediumly ported Track 1 heads flow 298/223 @ .700 lift and flow 279/214 @ .500 lift.....

and my porter said he can get MORE airflow out of them. Also, that was with the stock valves brodix uses..no special aftermarket vavle or anything.

The reason summit says 4000-8000 is because the brodix manifold has a much larger plenum opening than a victor junior or super victor which will allow for higher rpm breathing. With a 355 and a brodix track 1 head with a victor junior manifold you will be very happy.

 

There is a famous thirdgen that runs around the NMCA races around here. He runs mid-high 9's with a 427 smallblock and Ported Brodix Track1 heads. Within rules, he had th valves set at roughly 20.5 degrees from the normal 23 degree setup, he said the portwork/epoxywork was too costly to discuss and it took a LOT o time. Fullweight thirdgen he said it weighs roughly 3550 without him and he's a BIG guy. Trap speed was like 135-137 if I remember correctly.

Numbers? Camshaft lift was in the low .800" range . Duration he wouldn't discuss but supposedly he shift in the 7000+ range.

He said the intakes flowed well over 320 CFM and the exhaust was like 280 something. Crzy? yes I was impressed and the guy honestly knew his ****.

Bottomline, there is room to work in that head! His name is Tom G.

I'd honestly do an AFR 227 on a big cube SB

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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com

 

I won't be doing any kind of clean up or port work on the heads at all. So overall, is everyone agree on the Track 1 Brodix? Thanks.

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Procharged and intercooled '94 Mustang GT. 436rwhp, 428rwtq on old fuel system and boost, and way outta tune. 7.31@100mph 1/8, 11.47@118

'95 T/A- A4 Borla y-pipe,Hooker cat-back, gutted cat, LT4 KM, CAI, foil. 8.58@84 1/8
'70 Nova- 355ci LT1, forged pistons, ported and polished double hump heads w/ 2.02 valves, 1.6 roller rockers, lumpy cam, longtubes, 750 Holley reworked to about 850cfm, 350 trans w/ 3500 stall and shift kit.
Check outMY SITE

 

Why not some raised runner heads? There is lots of choices of diff types though. With the right porter almost anything is possible

Steven

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383 Inches of stroked turbocharged fun.
If one is good shouldnt 2 be great?????
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TORQUE=FUN

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You might want to look at flow numbers here; the heads were flow tested on the same bench using the same setup.

http://www.chevyhiperformance.com/ed...=745&aid=41598

 

Why not? I understand that you're spending a lot of cash for the heads and may not have much $ left to pay for port work. But on the other hand, since you're springing for a top-shelf set of heads, why not maximize your gains?

 

I have a pair of AFR 210's. Here is the flow chart with just a combustion chamber clean up(smoothed and flush with valve)and a 30deg back cut on the valves. Random port.

int. exh.
0.100 71.1 61.4
0.200 140.9 122.3
0.300 201.8 172.0
0.400 249.6 219.0
0.500 281.1 249.2
0.600 298.3 261.4


The numbers were done on a Flow Pro bench at 28in of water. The intake had a radius inlet and the exhaust had a 1 7/8 round flow tube on it. Porting and testing were performed by Total Engine Air Flow.

 

Ok i have a dumb side question for anyone What is the purspose of flowing using a tube? Seems like its just a way to get better flow #s or is there a actual purpose to it?

Thanks.

 

I'm surprised no one has mentioned Dart's Pro1 Heads. Priced pretty damned well, and flow like crazy right out of the box.

The 200cc heads are probably about right for your 355.

Just another option for ya to look into.

Good luck!