[mychevystang]

Victor jr heads
Hey, I jsut got a set of 215cc Victor Jr heads for my 350 chevy I am building. They are set up for a soldid roller. the flow numbers are very close to that of the AFR 210cc heads and I am wondering if the Victor heads will perform as well as a set of AFR heads at the drag strip.
Anybody have any idea of a 1/4 mile time I could have with my set up... 1982 s-10, very strong built 700r4 with the tci full manual reverse valve body, 3000 stall converter, nitrite crank, eagle h-beam rods, 215cc victor heads with 70cc chambers, wiseco forged pistons, crank scrapper, victor jr intake, 850 mighty demon carb, .575 lift solid roller cam with 290 degrees of duration.electri water pump, only has an altenator, msd pro billet distributor and 6a box with a 4 stage retard for a edelbrock rpm nitrous set up... the truck has a 8 point cage so it is a little heavier and 3.73 rear end gears. I hope ot take it to the drag strip in 2 weeks when i get it ready. I am planning on running a 150 shot of nitrous unless people think that the tranny coud hold more.. I was told by the tranny company that they have sold lesser 700r4's that held up to a 300 shot. any info would be helpful. sorry for such a long post

 

[firestone]

Just a couple of things, I would go with a bigger stall ,mabye something around a 4000. Also, if your heads are unported, I doubt they would perform like a set of CNC ported AFRs. I think you would be a little closer comparing them to a set of unported Dart pro 1's. As far as what it should run, that is a little hard not knowing the compression or weight of the vehicle, but I would guess around 11.5 on motor, and around 10.5 on a 150 shot. These are just rough estimates though.

Adam

 

[bonuts]

Higher Stall? I don't think thats a great idea, unless you've tubbed the truck, and run some pretty big rubber.

My S-10 runs a mild 350, somewhere near 325-350 HP, and it'll bust the tires loose through all 3 gears (TH350) And I'm only running a 3:08 Posi, so I think you will have some traction issues to deal with already.

Other than that sounds like it'll be a quick truck. This summer I saw a S10 with a very nicely built 406, the truck had been mini tubbed, and it ran mid 12's. The owner said it was running around 450 Horse plus a 150 Fogger.


bonuts

 

[mychevystang]

compression

The compression of the motor is aproximately 11.5:1. THe flow numbers that edelbrock give with the heads is just slightly under the 210cc intake runner AFR's. THe numbers at .600 lift are around 273 intake and 203 exhaust. Thanks for the input about the truck...

 

[firestone]

I dont dont know for sure what figures they gave you, but if they gave you an entire list from 100 to 700 lift, make sure you compare the mid lift numbers. These are very important when it comes to hp and torque. Just comparing max lift flow numbers will not tell you a whole lot. Also, look at exhaust flow, that has a large effect in hp also. I dont know how much you can depend on this, but there is a website below where many heads were flowed on the same bench under the same conditions. If they are accurate, I think this would be a good place to compare. As far as the stall goes, it is right that if you arent hooking up right now, a higher stall will only make that worse, I was assuming you were going to be running slicks. I have a 3000 lb 1969 firebird that has a ladder bar coil over setup and 28/11.5/15 slicks, and it ran a 5.71 8th on a 200 shot. It is a 358 with a 5000 stall and a 230cc runner head. So if you can hook it up, I think a 4000 would make you faster with the large heads and cam you have.

Good luck
Adam

http://chevyhiperformance.com/techarticles/41598/index6.html