Eagle Hemi race build

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gumper

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Need some guidance on building a 600+ horse Eagle for my Duster since my 410 LA engine is dead and gone. Starting with a complete 09 5.7 I traded small block parts for. Have TTI headers, MSD ignition, Manley 392 stroker kit, and various swap parts since it was already in another A-body. Going to send the heads off to a friend of mine in Idaho to have them opened up as much as possible, new springs and whatever else needs done. Need to buy a single plane carb intake and choose a cam to get me where I want to be.
I wanted to try to make it to 600 on pump gas, but may not be possible according to others I’ve talked to. Going with the carb setup so I can swap gas and methanol carbs for occasional street driving and racing on alcohol. It’s going to be 90% drag strip use, so pulling timing to cruise the street is no big deal especially at my 5000’+ altitude. I don’t know how forgiving the modern Hemi heads are for detonation.
I do need some direction on building this. The pistons I have are advertised at 12.5:1 with the 65cc chambers and .040” gasket. I’m not married to those pistons as they came with the used stroker crank and rods. There’s lots of cams out there, but doesn’t seem to be a lot off the shelf that’ll be aggressive enough. I did see Summit has some big ones available if they are decent quality. I’ll be using a 727, roughly 4500 stall and 4.10s.
My goal is run right around the 10.0-10.1 ET at sea level with a 3000# car. Don’t want to break into the 9s and deal with putting a cage in the car that needs certification every couple years. The best I ran with the 410 was 10.68 in those conditions.
 
I don’t have a lot to suggest, but one thing for sure, if it’s 90% race and you’re willing to run alcohol, don’t stop at 12.5:1. Run the compression up as high as you can. 15:1 isn’t unreasonable for alcohol. Pull 10 degrees out of it and cruise it on 93 octane occasionally will be no big deal.
 
Also, Texas Speed has a line of gen 3 hemi cams you should look at. They have a few grinds that will get you where you want to go. Most other cams on the market are geared towards guys that just want to stick a cam in a stock engine and make it sound good.

Texas Speed and Performance Gen 3 Hemi Stroker Cam Stage 1

Their stage 1 stroker cam claims 699hp on 426 cubic inches at 11.3:1 on pump gas.
 

I ran an 11.7 with my Hardtop maybe 5 years ago at N.E. Dragway. Street only car with 323's on Nostagia day. They came up to me and said if I go 11.5 I will need a cage?
Don’t want to break into the 9s and deal with putting a cage in the car
 
The Gen 3 doesn't require lots of timing. My 6.1/426 is 13:1, built to run on pump gas. 93 is the minimum requirement for mine. My timing is at 24*. I would agree with most here, if it's 90% drag, get as much compression for the booze. With limited street use, spring for few gallons of race gas. You could just keep it pump gas and still easily achieve your HP goal.
 
Need some guidance on building a 600+ horse Eagle for my Duster since my 410 LA engine is dead and gone. Starting with a complete 09 5.7 I traded small block parts for. Have TTI headers, MSD ignition, Manley 392 stroker kit, and various swap parts since it was already in another A-body. Going to send the heads off to a friend of mine in Idaho to have them opened up as much as possible, new springs and whatever else needs done. Need to buy a single plane carb intake and choose a cam to get me where I want to be.
I wanted to try to make it to 600 on pump gas, but may not be possible according to others I’ve talked to. Going with the carb setup so I can swap gas and methanol carbs for occasional street driving and racing on alcohol. It’s going to be 90% drag strip use, so pulling timing to cruise the street is no big deal especially at my 5000’+ altitude. I don’t know how forgiving the modern Hemi heads are for detonation.
I do need some direction on building this. The pistons I have are advertised at 12.5:1 with the 65cc chambers and .040” gasket. I’m not married to those pistons as they came with the used stroker crank and rods. There’s lots of cams out there, but doesn’t seem to be a lot off the shelf that’ll be aggressive enough. I did see Summit has some big ones available if they are decent quality. I’ll be using a 727, roughly 4500 stall and 4.10s.
My goal is run right around the 10.0-10.1 ET at sea level with a 3000# car. Don’t want to break into the 9s and deal with putting a cage in the car that needs certification every couple years. The best I ran with the 410 was 10.68 in those conditions.
If you are wanting to raise up your compression. I have a brand-new new I think 14.1 compression 5.7 hemi stroker pistions I would sell. They are set up to use a 4.050 stroke crankshaft
 
If you are wanting to raise up your compression. I have a brand-new new I think 14.1 compression 5.7 hemi stroker pistions I would sell. They are set up to use a 4.050 stroke crankshaft
Another guy is supposed to be selling me a rotating assembly with 12.5 pistons. If he falls through I’ll let you know.
 
The Gen 3 doesn't require lots of timing. My 6.1/426 is 13:1, built to run on pump gas. 93 is the minimum requirement for mine. My timing is at 24*. I would agree with most here, if it's 90% drag, get as much compression for the booze. With limited street use, spring for few gallons of race gas. You could just keep it pump gas and still easily achieve your HP goal.
I was going to give 12.5 a whirl. We only have 91 here, but also live over a mile high in elevation. Should be able to get away with it no problem.
 
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