Thatblack03
Junior Member
What would you do in this situation for an engine build?
This is my first build and the goals have changed and do change as time passes, sometimes due to my ignorance, other times due to deals I find online and my impulse to change everything when I'm knee deep.
That being said, the original goal was a BUDGET boosted 650whp, pump 93 fuel, non-pi iron block build with 3v heads. I was gonna be running the stock 3v intake, Comp cams, and the fuel system from the car it's going in, an 03 gt. I'd began buying parts for the romeo iron block when I came across a steal of a deal for a nemak block. Fast forward and I've also found a super cool and rare intake that I bought a few months ago.
So, before I spend another dime, I need some insight. I need a plan.....
I still need ALOT and I'm not sure what direction to take. Being my first build, I'd bought pistons of stock bore thinking I'd just do a dingle berry hone and slap it together and go. Bad idea obviously, and now I have some shiny paper weights because even a slight hone would likely ruin my piston to wall clearance. A slight hone wouldnt work in my opinion though, there are vertical scratches and with it being on the stand for months, its likely rusted from moisture.
I'd also bought gen 2 coyote rods that I won't be using now that my budget is out the window. I'd prefer safety more than budget now anyway since I have already wasted so much on the romeo block itself and the romeo specific ARP hardware and King XP bearings.
I guess now the goal is a proper build making 650whp on 93 but with the ability to go 800whp safely on e85. One big thing I want is a safe but high rev limit of 8500rpm, which won't be cheap but will be sooo worth it to me. Yes, I know it'll be far out of it's power band and so on, but it's what I want. The limiting factor in my opinion will be head flow.
The MMR intake I've bought will flow great, the custom turbo (if I do go turbo) manifolds I'm gonna make will flow great aswell. As for heads, I'm planning on going Livernois or MHS CNC ported heads with the bigger steel valves. I'm also gonna be using the Jesel followers and lash adjusters which are supposedly rated at 9k rpm. For cams, I'm going with Comp 127650s. I've heard these cams have so much lift, they actually break the stock followers pretty often, so the Jesels will be good here. Not sure about springs, I'm likely gonna go with Comp 26125-24 .650 lift beehives.
Now for the block itself, I'm thinking I want to stroke it instead of a built 4.6 displacement. I really want to build a high revving NA 11.0:1 compression monster, but realistically I'd never see over 450whp best case scenario. So that leaves me stumped on what to do with this build.
I have nothing as far as rotating assembly goes since I'm not using stock 6 bolt crank or the rods and pistons I bought. As I said, the pistons probably wont fit after a good hone and the rods just don't seem like the right choice. Better to have the added insurance the manley H beams would bring over stock gen 2 yote rods.
Right now, I'm looking at the MMR 5.0 stroker kit with maybe 10.2:1 compression, .020 over pistons with big cam valve reliefs. Just wondering what you guys think. Comes with Manley H beams, Manley pistons of choice, and Manley Forged 8 bolt crank with bearings.
Will the stroke ACTUALLY cause piston wear due to the piston exiting the bore on the downstroke? Is the piston speed gonna be detrimental at that stroke with the rpm I'm gonna turn? Would that compression level be okay for a healthy performing engine that's out of boost while also taking boost safely? Should I do the 4.75 stroker kit? If you've pieced together a build, what did you do? Not looking to have 20k into parts alone on this build, but I want it to be done right for the power level.
I'm in the process of learning HP Tuners currently and do plan on tuning myself, so I'm open to suggestions on the ecu I should be using too. Thinking I'm gonna eventually go ms3 pro as of now. I have only dipped my toes in on researching tuning though, so I'm not even sure HP Tuners can tune that ecu. The first start and tune will be on the stock 03 gt ecu. It will run a 3v fine but I do want to upgrade before I push much power. With the 03 ecu not being able to detect knock, that scares me a bit.
Any help is appreciated and I'm sorry for such a long winded post. I just had to lay out my goals for the build and why I want to "buy once, cry once" this time around rather than throwing the wallet at the internet and hoping I buy the right stuff only to change the plan later on.
One other thing, if anyone has a tune file they wouldn't mind sharing, I'd love to check it out to help learn. I'd specifically like a stock 3v gt tune and one with bolt ons to compare them. I'd also LOVE to have a tune file from a boosted gt making close to my goal above.
This is my first build and the goals have changed and do change as time passes, sometimes due to my ignorance, other times due to deals I find online and my impulse to change everything when I'm knee deep.
That being said, the original goal was a BUDGET boosted 650whp, pump 93 fuel, non-pi iron block build with 3v heads. I was gonna be running the stock 3v intake, Comp cams, and the fuel system from the car it's going in, an 03 gt. I'd began buying parts for the romeo iron block when I came across a steal of a deal for a nemak block. Fast forward and I've also found a super cool and rare intake that I bought a few months ago.
So, before I spend another dime, I need some insight. I need a plan.....
I still need ALOT and I'm not sure what direction to take. Being my first build, I'd bought pistons of stock bore thinking I'd just do a dingle berry hone and slap it together and go. Bad idea obviously, and now I have some shiny paper weights because even a slight hone would likely ruin my piston to wall clearance. A slight hone wouldnt work in my opinion though, there are vertical scratches and with it being on the stand for months, its likely rusted from moisture.
I'd also bought gen 2 coyote rods that I won't be using now that my budget is out the window. I'd prefer safety more than budget now anyway since I have already wasted so much on the romeo block itself and the romeo specific ARP hardware and King XP bearings.
I guess now the goal is a proper build making 650whp on 93 but with the ability to go 800whp safely on e85. One big thing I want is a safe but high rev limit of 8500rpm, which won't be cheap but will be sooo worth it to me. Yes, I know it'll be far out of it's power band and so on, but it's what I want. The limiting factor in my opinion will be head flow.
The MMR intake I've bought will flow great, the custom turbo (if I do go turbo) manifolds I'm gonna make will flow great aswell. As for heads, I'm planning on going Livernois or MHS CNC ported heads with the bigger steel valves. I'm also gonna be using the Jesel followers and lash adjusters which are supposedly rated at 9k rpm. For cams, I'm going with Comp 127650s. I've heard these cams have so much lift, they actually break the stock followers pretty often, so the Jesels will be good here. Not sure about springs, I'm likely gonna go with Comp 26125-24 .650 lift beehives.
Now for the block itself, I'm thinking I want to stroke it instead of a built 4.6 displacement. I really want to build a high revving NA 11.0:1 compression monster, but realistically I'd never see over 450whp best case scenario. So that leaves me stumped on what to do with this build.
I have nothing as far as rotating assembly goes since I'm not using stock 6 bolt crank or the rods and pistons I bought. As I said, the pistons probably wont fit after a good hone and the rods just don't seem like the right choice. Better to have the added insurance the manley H beams would bring over stock gen 2 yote rods.
Right now, I'm looking at the MMR 5.0 stroker kit with maybe 10.2:1 compression, .020 over pistons with big cam valve reliefs. Just wondering what you guys think. Comes with Manley H beams, Manley pistons of choice, and Manley Forged 8 bolt crank with bearings.
Will the stroke ACTUALLY cause piston wear due to the piston exiting the bore on the downstroke? Is the piston speed gonna be detrimental at that stroke with the rpm I'm gonna turn? Would that compression level be okay for a healthy performing engine that's out of boost while also taking boost safely? Should I do the 4.75 stroker kit? If you've pieced together a build, what did you do? Not looking to have 20k into parts alone on this build, but I want it to be done right for the power level.
I'm in the process of learning HP Tuners currently and do plan on tuning myself, so I'm open to suggestions on the ecu I should be using too. Thinking I'm gonna eventually go ms3 pro as of now. I have only dipped my toes in on researching tuning though, so I'm not even sure HP Tuners can tune that ecu. The first start and tune will be on the stock 03 gt ecu. It will run a 3v fine but I do want to upgrade before I push much power. With the 03 ecu not being able to detect knock, that scares me a bit.
Any help is appreciated and I'm sorry for such a long winded post. I just had to lay out my goals for the build and why I want to "buy once, cry once" this time around rather than throwing the wallet at the internet and hoping I buy the right stuff only to change the plan later on.
One other thing, if anyone has a tune file they wouldn't mind sharing, I'd love to check it out to help learn. I'd specifically like a stock 3v gt tune and one with bolt ons to compare them. I'd also LOVE to have a tune file from a boosted gt making close to my goal above.
