Building a 383 w/ AFR205s
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From: The Woodlands/N.Houston
Building a 383 w/ AFR205s Well I'm looking to turn my stock short block ls1 into a forged 383. If I run with afr205s and a fast 92/92 with a good cam through a M6 what kind of numbers can I be looking at putting down?
I also want to run N20 on the motor, what would the max be on a forged balanced motor like this? I do not currently have a stand alone fuel system for the N20 or anything like that, same as the pump gas in the tank.
If I did have a stand alone fuel system with some race fuel in it how much more N20 could I run?
What cam size would I need to hit 450+ hp? I have the afr205s and the block so my only real variations are the pistons and cam.
The heads are shaved to 59cc chambers. What pistons would you use for a good pump gas N20 motor? -4cc?
Thanks!
I also want to run N20 on the motor, what would the max be on a forged balanced motor like this? I do not currently have a stand alone fuel system for the N20 or anything like that, same as the pump gas in the tank.
If I did have a stand alone fuel system with some race fuel in it how much more N20 could I run?
What cam size would I need to hit 450+ hp? I have the afr205s and the block so my only real variations are the pistons and cam.
The heads are shaved to 59cc chambers. What pistons would you use for a good pump gas N20 motor? -4cc?
Thanks!
Last edited by ultradriver10000; May 23, 2010 at 09:30 PM.
Its gonna depend on what size hit you are running. Highest octane you can get would probably be ideal. VPC-16 or something of the like for SA fuel sys. You are gonna want to measure with the cam you plan on running to be sure you don't over do the valve reliefs to keep your CR up.
Well I'm looking to turn my stock short block ls1 into a forged 383. If I run with afr205s and a fast 92/92 with a good cam through a M6 what kind of numbers can I be looking at putting down?
What cam size would I need to hit 450+ hp? I have the afr205s and the block so my only real variations are the pistons and cam.
What cam size would I need to hit 450+ hp? I have the afr205s and the block so my only real variations are the pistons and cam.
575hp at the crank! and enough torque to bury what-ever pulls up next to me.
LPE built my 383 block and used JE pistons. They are a flat top piston with reliefs.
I'm running AFR's 234/238 cam and Tony Mamo ported the heads.
Couldn't be happier with the setup.
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From: The Woodlands/N.Houston
Currently my head/cam combo with an LS6 intake and ported stock TB put down 448whp and 428wtq. I was hoping maybe 475whp450wtq and maybe a 225hp N20? I'd like to hit 700whp with N20, even if it is only once on a dyno then dialing it back to maybe a 175 shot for the street on pump.
Would that be a reasonable goal?
I'm thinking 4.0" Crank, some 6.125" rods and maybe some 3.905" -4cc pistons.
Cam I was thinking about something like a TRex or maybe the one Pat G had them make that made more torque.
I really wanted to do a forged LS3 but I don't want to be that greedy, as I know my wife wants a new dining room set. :/ If I have toys I need to let her have some too lol.
Would that be a reasonable goal?
I'm thinking 4.0" Crank, some 6.125" rods and maybe some 3.905" -4cc pistons.
Cam I was thinking about something like a TRex or maybe the one Pat G had them make that made more torque.
I really wanted to do a forged LS3 but I don't want to be that greedy, as I know my wife wants a new dining room set. :/ If I have toys I need to let her have some too lol.
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Thread Starter
On The Tree
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From: The Woodlands/N.Houston
I currently have an M3, a police interceptor crown victoria, the corvette and a 1973 triumph tiger 750. She has a colorado lol.
Plus I'm working on picking up an E36 M3 that might be a LSx car in the future, so I need to let her have her girlie things. Plus it is nice coming home to a house that looks all pretty.
I'll probably have LME of Houston build the thing for me as I really don't have time right now to do it myself.
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I do understand where he's coming from. Although I only one toy in the garage I still get heat for spending time/money on it. In fact after last summer's head/cam install and this Spring clutch swap my wife officially hates the vette. Probably doesn't help that she's a stay at home mom with our 1 1/2 year old and when I get home from work she really wants me to spend time with him and not in the garage (same with weekends). I just refuse to pay the labor costs to have someone else do it when I enjoy doing the installs myself. 
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ITs kinda of funny how our wives, gf's act about how we spend the money that we worked for. I could see if the bills weren't paid etc, but if they are then don't bother me about spending my money on what I want to spend it on. I'm lucky as hell, my friend with benefits says I owe her a million bucks is willing to accept payments in the form of C**k. So you can imagine I make regular payments. A little off track from the OP's intent but since we're on the subject of women and money etc, I had an ex that I had to prove a point to. The final straw was her complaining about what I did with the money I made (in essence she was just mad I didn't spend it all on her). So I pulled 2400 out of my pocket since I just came from the bank, announced I have to take a sh*t. Preceded to wipe my *** with one of the 100$ bills and brought it out and asked if she understood my point about what I do with my money. This story has another win too. I took that $hi**y 100$ bill and bought gas with it. The look on the clerks face was priceless. SORRY FOR THE HIJACK, I just can't understand why a woman gives a **** about where her mans money goes when the bills are paid, food in the refrigerator, and cash in the bank !! A little history, 2 x divorced, cost me a total of 3000.00 take that gold diggin bit**es ! Happy as hell !! Marriage, never again.
224/228 got me 454rwhp on a SB LS1 with non-ported heads so you don't need a big cam to hit 450.
... Will be posting soon, hopefully, what porting my heads and going to a slightly larger cam did.
... Will be posting soon, hopefully, what porting my heads and going to a slightly larger cam did.
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Unless I'm mis remembering I don't think that'll work. The afr 215 requires a larger bore, interference with the valves or bad shrouding of the valves with the small bore. OP is only stroking his 3.898 bore 346 to make it a 383. I thought Tony said his new heads needed a 4.000 or 4.002 minimum. MR Mamo could you set the record straight. I don't want to spread bad info.
The AFR 215's will work on an LS1/6 block. Per AFR website:
is aimed specifically to maximize 4” bore combinations (364 - 408 CID). However this head is very versatile and could also be considered for aggressive 346 applications and should also be a prime consideration in larger stroker motors as well (415-430 CID) if the focus of the build is more aimed at enhancing street performance than all out strip performance (where our 225 or 240 cc offerings potentially make more sense).
is aimed specifically to maximize 4” bore combinations (364 - 408 CID). However this head is very versatile and could also be considered for aggressive 346 applications and should also be a prime consideration in larger stroker motors as well (415-430 CID) if the focus of the build is more aimed at enhancing street performance than all out strip performance (where our 225 or 240 cc offerings potentially make more sense).
ITs kinda of funny how our wives, gf's act about how we spend the money that we worked for. I could see if the bills weren't paid etc, but if they are then don't bother me about spending my money on what I want to spend it on. I'm lucky as hell, my friend with benefits says I owe her a million bucks is willing to accept payments in the form of C**k. So you can imagine I make regular payments. A little off track from the OP's intent but since we're on the subject of women and money etc, I had an ex that I had to prove a point to. The final straw was her complaining about what I did with the money I made (in essence she was just mad I didn't spend it all on her). So I pulled 2400 out of my pocket since I just came from the bank, announced I have to take a sh*t. Preceded to wipe my *** with one of the 100$ bills and brought it out and asked if she understood my point about what I do with my money. This story has another win too. I took that $hi**y 100$ bill and bought gas with it. The look on the clerks face was priceless. SORRY FOR THE HIJACK, I just can't understand why a woman gives a **** about where her mans money goes when the bills are paid, food in the refrigerator, and cash in the bank !! A little history, 2 x divorced, cost me a total of 3000.00 take that gold diggin bit**es ! Happy as hell !! Marriage, never again.
What gas station takes over a 20$ bill?!!!!? (yes, that was all I got out of this)
How the fudge did you manage to get those numbers?!?
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The AFR 215's will work on an LS1/6 block. Per AFR website:
is aimed specifically to maximize 4” bore combinations (364 - 408 CID). However this head is very versatile and could also be considered for aggressive 346 applications and should also be a prime consideration in larger stroker motors as well (415-430 CID) if the focus of the build is more aimed at enhancing street performance than all out strip performance (where our 225 or 240 cc offerings potentially make more sense).
is aimed specifically to maximize 4” bore combinations (364 - 408 CID). However this head is very versatile and could also be considered for aggressive 346 applications and should also be a prime consideration in larger stroker motors as well (415-430 CID) if the focus of the build is more aimed at enhancing street performance than all out strip performance (where our 225 or 240 cc offerings potentially make more sense).
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Orangepeel are you serious? How much gas do plan on buying ? Considering gas just recently came down to a bit more affordable level some stations may be more reluctant, now. Remember when gas was in the 4$ per gal range just a couple years ago? 100 bucks wouldn't even take care of my 2 gran prix's let alone putting premium in the FRC. Must be different rules in your area. They do scrutinize the hell out of the bill before they accept it though. Use the marker in two places, one attendent goes as far as using a needle to scratch a red or blue fiber before he'll take the bill. Don't blame him, here in Metro Detroit we got real scumbags.
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I already have AFR205s so I'm planning on using them, if I loose some power up top I'm ok with that.
I talked to LME and they are saying I should be able to do 500whp pretty easy and spray up to a 250hp N20 shot. I'll probably do a ~150hp shot until I get bored and run a stand alone fuel system for the N20 then I'll step up my game to a 200+ shot. Probably do Callie's crank and connecting rods with Wesco pistons.
I talked to LME and they are saying I should be able to do 500whp pretty easy and spray up to a 250hp N20 shot. I'll probably do a ~150hp shot until I get bored and run a stand alone fuel system for the N20 then I'll step up my game to a 200+ shot. Probably do Callie's crank and connecting rods with Wesco pistons.