SmokedTires

Well after stopping by the builders shop, he told me that I should maybe consider a better flowing head over the Brodix Track 1's I have for my engine goal. So I am now on the waiting list at AFR for a new set of 210cc Race Ready heads. I could have gone with the Competition version which flow a bit better on the intake side, but they were an additional $500 to go from 70% CNC ported to 100% on the intake runners only, the ehaust runners & chambers are 100% CNC ported on bothe versions. So with the $ I saved by going with the Race Readys, I upgraded the Valve Stem Seals from rubber to Teflon, the Chromoly retainers will be the Titanium ones, and the roller cam 1.550" springs are now the Pacaloy springs with .100 longer valve upgrade.

Here's how the new heads (advertised) flow compared to the old.
AFR:
Lift....Intake.....Exhaust
.200....135........112
.300....197........145
.400....245........185
.500....273........205
.550....277........210
.600....282........215
.650....283........218
.700....285........220

My ported Brodix Track1's I flowed before they were pocket ported below the valves:
.200....127........115
.300....182........159
.400....230........185
.500....260........198
.600....260........208
.650....266........210
.700....265........210

Looks like we may be moving froward finally now that dirt season is about over :D

GrandSportC3

Those are :cool: :cool: heads!! :cheers: :cheers:

SmokedTires

Thanks Olivier, now I have to sit on my hands for 6 weeks before I can drool on them :lol:

Jughead

Man, those are some serious parts you're using there Mike. It should be a real screamer! :yesnod:

Pete79L82

Mike; I am really surpised that an engine builder would recommend the AFR 210cc intake over the Track 1 221cc intake. The track 1 is an excellent head. My experience is that the Brodix Track 1 head will outperform the AFR 210.

Are those flow numbers on the Brodix from a actual flow bench or are they advertised munbers? Of the heads I have flowed I find that Brodix's advertised numbers are quite conservative , while AFR's numbers are quite exaggerated. Those numbers on the Brodix intakes are lower than what they advertise unported.

QuickVet

cant wait to see that beast at the track :cheers:

SmokedTires

Thanks Len, I'm hoping my mouse will have long enough legs to keep up with all you rats :crazy:

Pete the Brodix flow numbers are actual numbers that we got. I've since cleaned up the step that was below the valve and haven't had them flowed again, but I don't know how much more I would have gained. I bought the Track 1's used and the builder commented that they were an older casting, so maybe the newer ones flow better out of the box :confused:

Quickvet- Yeah I can't wait to run her down the strip next year. I should be able to hit 11's on the motor but I don't know if I have the skill or power to get into 10's :crazy:

Gordonm

Nice heads Mike. Looks like you are making good progress. I know I have asked this before but why only 388. I know you said you want a quick revving motor, but the extra cubes would make a lot more power. I keep bringing up the 421 cu in motor we have talked about. This motor has a light crank and aluminum flywheel and it revs so fast it is unreal. It routinly sees 7500 rpm shifts and is smooth as butter. It makes over 600 HP and has a butt load of torque. So much he has never really seen its potential. He is afraid of the trans and rear. It ran high 11s on BFG street radials at 121mph with a 2.3 60 foot time. What kind of power are you going to make. I assume with all you are doing you have a pretty healthy roller cam going in.


[Modified by Gordonm, 6:41 PM 9/20/2003]

SmokedTires

Yes I remember that 421 very well Gordon. The reason for the 388 is because I got a killer deal on the Bryant Billet Crank (cheaper than if I bought a cast crank) which is a 3.625 stroke. I then decided afterwards to go along with the big bore/ short stroke combo similar to the current Nascar setups they're running.

If I went with a .030 over 350 bore (4.030), I would have a 370 sbc. I've found that playing around with DD2000, the shorter stroke doesn't affect HP as much as it does the torque. Yes my torque numbers will certainly be lower with the 388 vs a 406+ but I"m hoping it'll allow me to also hook up my tires a bit more allow my car accelarate while the power continues to build. I don't know if this will be everything I'm hoping for, but it will be a good start. The 388 would be a great combo to throw a supercharger at in the future if I ever want to increase the torque & the billet crank I have will take tons of NOS if I decide to that route 1st ;) .

Here's the cam: It's a mech roller with lobe separtion angle at 112 degrees, the intake centerline is 108 degrees with 4 degrees ground into it to improve the lower rpm torque. The lift is intake .616"/ exhaust .622" with 1.6 rocker arm ratio. Duration @ .050 is Int. 248 & Exh. 254 . The cam timing events @ .050 are 16 52 63 11.
DD2000 puts me at 581hp at 6500 rpms thru mufflers & 615 hp without mufflers. I'm not sure how much HP I will lose with the JCL's, but they're the free'est flowing sidepipes I know of :) . With mufflers, I'm at 408 lb ft torque at 2500 rpms and peak at 531lb ft at 5000 rpms. This is 10.5:1 compression also.




[Modified by SmokedTires, 7:12 PM 9/20/2003]

Gordonm

Can't beat a killer deal on a crank. Sounds like a real nice combo. When do we get to hear about it running. This year or next spring.

SmokedTires

Hopefully we'll have installed by next spring :rolleyes: . :cheers:

Stewart's74

I sent away for an AFR catalog and they sent me a cool sticker too.
Nice heads, I'm saving my pennies for a set of 190's or 195's :cheers:

MotorHead

Do those heads have a raised exhaust port ?

I have been looking at Edelbrock Victor Jr. heads and was going to order them today but found out they have .300 raised exhuast ports meaning I will have to get new headers too and I just ceramic coated mine. :D

SmokedTires

:cheers: That's :cool: Stewart :thumbs:

Motoirhead, didn't you just get you Sportman II's not too long ago :crazy: . No the 210's don't need any special parts, the larger 220 & 227 do need special parts, but I'm not sure if they have raised ports ?

MotorHead

The Victor Jr.'s are for the next motor, 400 stroker, the search fo HP never stops you know that.

When yu start to get into the race heads a lot of them I have found have a raised exhaust port, this helps the flow, but I don't think my headers will fit now, probably have to get the Hooker Super Comps 1 3/4 in.