Efuel, which heads? - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 06-14-2014, 01:47 PM Thread Starter
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Efuel, which heads?

Some may remember my thread a few months ago when my 7.3 decided to let go. Well I'm finally getting somewhere. Long story short my block was shot so I found a $300 '02 used long block on craigslist that "had a knock". My hope was that it could be built relatively inexpensive. Well after tearing down I discovered that wasn't the case. It would need machining, a cyl sleeve pistons and I didn't want the pmr rods. So I found another complete "low mileage" 7.3 that was said to be pulled from a running '97 f-450. Just tore it down today because I couldn't just put it in my truck based on what some guy told me. It's in really good shape. I think I'll hone it put new bearings and rings in it and put it in. My question is which heads do I use? Obviously I will check for straightness but is there an advantage to using the sd heads over the obs since I'm doing efuel? I know the sd heads are a deadhead system and I'll be better off doing a reg return but didn't know if there was any reason to choose one versus the other. Btw I will be doing the 6.0 fuel pump efuel conversion.

'97 F-350 7.3 CCLB SRW ZF5 4x4
360,000+ miles
South Bend Stage 1
DP-Tuner - 40T,80T,80E,100P
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DE 3" DP & 5" Exhaust
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'77 F-250 Highboy 460ci SCLB C6 4x4
Rebuilt 460ci
Comp Cam, P&P DOVE-C Heads, Holley 770cfm
Flat top pistons. 10.5:1ish compression
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post #2 of 9 Old 06-14-2014, 02:33 PM
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As long as the OBS motor truly is a 97 the heads are exactly the same. The older 94.5/95 heads have 8 bolt intakes instead of 10 bolt and the heads are build a little heavier in 96+ years.

As for the fuel the heads are the same with plugs instead of fittings

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DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
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post #3 of 9 Old 06-14-2014, 02:41 PM
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I would use the heads that came with the engine.

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post #4 of 9 Old 06-14-2014, 09:01 PM
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Also the 99+ heads have 3" intake runners instead of the stock obs 2" style

-Kris-
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post #5 of 9 Old 06-16-2014, 06:01 AM Thread Starter
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I have the filter housing from the sd enginge. Should i use that as a post pump filter since i would assume it is designed to handle the full psi of the system? Or just go aftermarket with the housing.

'97 F-350 7.3 CCLB SRW ZF5 4x4
360,000+ miles
South Bend Stage 1
DP-Tuner - 40T,80T,80E,100P
Boost & EGT Gauge
DE 3" DP & 5" Exhaust
DIY 6637



'77 F-250 Highboy 460ci SCLB C6 4x4
Rebuilt 460ci
Comp Cam, P&P DOVE-C Heads, Holley 770cfm
Flat top pistons. 10.5:1ish compression
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post #6 of 9 Old 06-16-2014, 05:39 PM
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Go aftermarket for better filtration and to get rid of everything in the valley

FRANK THE TANK
DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
05 AXLE SWAP 3.73 - 2.5" PURE PERF. LIFT COILS - FOX SHOCKS
BTS TRANS - TYMAR DOWN PIPE - 4" EXHAUST
Waiting To Be Installed... gtx4294r, studs, springs, HPOP?
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You are so smart Frank, I dont care what Terry says.
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post #7 of 9 Old 06-16-2014, 10:00 PM
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Can I ask why the opposition to a deadhead setup?

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post #8 of 9 Old 06-17-2014, 04:41 AM Thread Starter
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well just from my research it seems that a regulated return is an improvment. Figured while I was doing efuel i would do a rr setup too.

'97 F-350 7.3 CCLB SRW ZF5 4x4
360,000+ miles
South Bend Stage 1
DP-Tuner - 40T,80T,80E,100P
Boost & EGT Gauge
DE 3" DP & 5" Exhaust
DIY 6637



'77 F-250 Highboy 460ci SCLB C6 4x4
Rebuilt 460ci
Comp Cam, P&P DOVE-C Heads, Holley 770cfm
Flat top pistons. 10.5:1ish compression
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post #9 of 9 Old 06-17-2014, 01:58 PM
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The regulated return provides more constant fuel pressure to the injectors with the surges in the rails due to injectors opening and closing

FRANK THE TANK
DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
05 AXLE SWAP 3.73 - 2.5" PURE PERF. LIFT COILS - FOX SHOCKS
BTS TRANS - TYMAR DOWN PIPE - 4" EXHAUST
Waiting To Be Installed... gtx4294r, studs, springs, HPOP?
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You are so smart Frank, I dont care what Terry says.
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