cammedss2000

iTrader: (1)

I have a question that a lot of people might of asked but I could not really find anything on this setup. I am planning on doing a stroker kit in the future. I ordered the afr225 mainly for the spings that came on it but I noticed they flowed a little more. I am going to run an ms4 cam in it. Will I have ptv issues. I can exchange them but I am looking to hopefully turn out 500whp. The setup will be fast92/92,afr 225's, ms4, ls7 lifters, hardened pushrods(texas-speed), cutouts do you think 500hp is an option and I am concerned with the ptv issues. I just want to see how far I can push the 346ci before I go bigger. Any help would be great. Thanks!

fast377

iTrader: (52)

You will have ptv issues with those heads and your cam. You can flycut your pistons to resolve that though. I would have suggested that you went with the 205s though. You get a lot more power under the curve with the smaller high velocity port with smaller cubes. Now if you are planning to go with a larger cube stroker later, then the 225s will probably be fine. Save you from buying another set of heads later.

This is an excellent read: https://ls1tech.com/forums/showthrea...&highlight=500 Lots of good information about the 205s.

cammedss2000

iTrader: (1)

how much more would the afr 205s put down. If it is small numbers than screw it. I know I want a stroker in the future. Whatever I do its probably going to be all motor maybe some juice.. How do you flycut the pistons. Wouldnt that reduce compression. The afr 225 are already 72cc combustion chambers. I figured the afr 225 would fit an ms4 better than the 205's . Those heads seem like they would like the .600 lift more. Maybe not as big of a cam. But I really dont want to drop 2200 again if you know what I mean.

sparkwirez06

iTrader: (18)

With those heads and a 346 your cr is going to be in the low 9s. not a good cr for na.

cammedss2000

iTrader: (1)

yea I switched to the ls6 stage 1 heads for now. I figure with that cam it would make good power along with the fast 92/92. I dont know well see how it goes. Thanks for the help.

Full-Force

iTrader: (11)

If you have not put money down yet maybe you should consider the prc 5.3 heads and ms3 cam combo. No flycutting. Likely a little more power due to higher compression.

500 rwhp .... you have a tall order in front of you. Thats gonna require every bolt on known to man and the best that money can buy. Only a few have done it and Im not convinced that they could repeat the numbers on someone elses dyno.

You are looking at:

-pro ported fast 92
-afr or tfs heads that have been "worked over" (hand finished & milled)
-high 230 intake / low 240 exhaust cam with .600+ lift (no need for monster)
l-longtubes with ory with a big merge with either a cutout or a very free flowing exhaust
-electric water pump
-underdrive pulley
-lid

Im sure Im missing a thing or two, but even with all of this you are probably looking at 475 rwhp real world.

Good luck

Full-Force

iTrader: (11)

should not have left other heads out but those seem to be the most popular