im about two seconds away from pulling the trigger on a set of AFR 205's and a G5X3 cam. Here are the mods i will be having installed:

AFR 205's
G5X3 Cam
FAST 90mm manifold
ASP UDP
LG Longtubes (no cats)
Vararam Intake
B&B Bullets

the only thing i cant decide on is which LSA to get on the cam and whether or not to get the chambers milled from 54cc to 66cc on the 205's. I have been and always will be running 93 octane on the vehicle so i was told the 66cc chambers and 114LSA would be a great fit for my daily driver. I dont mind lope or loudness one bit, i just want something fast and reliable. Any advice on this guys? Also, what hp #'s do you guys predicts on this setup?


as always, thanks in advance
Dave

 

Target 11:1 compression, not sure what that figures out to be on chamber size. LG Motorsports could tell you.

114 LSA has a little smoother idle than 112. I predict 460-470 rwhp with the mods listed.

 

yeah Anthony had told me that he could do 64cc that would work out to be exactly 11.1 : 1 compression. Im thinking it would probably be best to go that route, and also get the 114LSA for a tamer idle since it is my daily driver.

Dave

 

Get the 114, mill the heads to 59CC's and flycut the pistons, You will see at least 480 RWHP and will have a nice street killer setup

 

excuse my ignorance, but what exactly is "flycut the pistons"?

 

thanks for asking, because i dont know either. From the sound of it, its something i dont think i want to do.

Dave

 

Flycutting is cutting eyebrow type indentions in the piston to give a little extra valve clearance. In order to do this the heads need to be off the motor.

You could then mill the heads down more and run an overall higher compression. More compression = more HP and torque.

 

More compression would normally require higher octane fuel as well. For a street car 11:1 would be the highest I would go.

 

ok so i think ive FINALLY decided, ill be ordering the AFR 205's milled to 64cc's with the G5X3 cam in the 114LSA. Any reason to shy away from this? Like i said itll be my daily driver on 93 octane with the mods listed above.

Dave

 

Sounds like a nice setup. Let us know how it goes. Thats almost exactly what im thinking of. I have also been considering the G5X2 cam for a true daily driver. Are you going to change to a fast intake?

 

Go with a .040 cometic head gasket set too. That will add a little more power.
Did you ever consider a TSP cam like the Torquer 2?

 

thanks for the help guys heres what i went with:
AFR 205's 64cc
G5X3 Cam 114LSA
ASP UDP
ARP Bolts
Pushrods (cant remember brand)
Gaskets

so everything above paired with my FAST Intake Manifold, LG Longtubes (no cats), B&B Bullets, and Vararam Snake Charmer should make one loud obnoxious beast. Ill keep everyone posted on my results.

thanks again to all who helped, its ALWAYS appreciated.

Dave

 

What's a ballpark cost for the AFR's and labor?

 

I was going to stay out of this one since you were on the right path untill I read the above post.

I will never understand why people insist on giving information when in the real world they don't understand the very topic they are giving advice on. You sir clearly do not know what you are talking about concerning compression, valve events, overlap, and engine building. I am sorry to come across like this but it pisses me off when someone repeats mis-information to others that they read somewhere.

For starters the type of compression that allows a car to run on a certain level of octane is dynamic compression and not the static compression that you just told this guy to set at 11:1. Dynamic compression, in order to run in this engine on 93, is cam dependant and if they are using a cam that is 1-unknown duration, and 2 unknown LSA you can't just say 11:1. I run 11.5:1 with no knock retard anywhere to be seen with a much smaller cam. The cam he chose is bigger than the G5x2 so we can only assume that it has a later intake valve closing point than 72.5degrees and therefore will be able to run with static compression a bit over 11.5:1 as my intake valve closing point of 68.5 degrees. At 11.7:1 he will be at or around 8.7 DCR and will have picked up quite a bit of low end TQ.

Leave advice to guys asking questions to people that know what they are talking about instead of spreading mis-info.

Persoanlly I would recommend the torquer II from texas speed and save yourself some money while getting a proven cam that your installer will have the specs for so he know how to safely build the entire package. If you want to use LG products then go entirely on their recommendations instead of trying to get advice from people that dont know the product.

 

thanks spinmonster, i spent about 2 days speaking with Anthony at LG and he gave me some great advice. My install guy up here in cincy has a great deal of experience/knowledge with the LG products as well so he recommended the same setup.

Dave

 

Dave I know a few guys with simular set ups and use a 112 LSA. If your going with that grunt let have great idle 112

this is what a few have mentioned

387tq/444hp Voilent mid range torque and HP, not a smooth torque curve. 3500 to 7000 rpm power range

Personally Look at a different CAI, use the grills too allow air into the engine bay too help keep the engine cooler\

Good Luck on your project