Ford 4.9 build
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Cross-Country
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Ford 4.9 build
Hi, im wanting to build the inline 6 in my 1995 ford f150. Im wanting to do a cnc ported head, micro squirt ecu, 1000cc injectors, custom intake manifold to run a mustang throttle body, turbo exhaust manifold with a s376, roller rocks, custom ground cam, forged rods and pistons. Can someone help me pick the right ones of each that I need? And can someone help me build a cam that will give me chop but still work well with the turbo. Thank you!
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Joined: Dec 2007
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From: Boise, Idaho
Agreed on talking to a cam manufacturer, as that's their specialty.
Sounds like an awesome build, please keep us posted on it.
On the throttle body, I would keep it as small as you can where it'll still feed the turbo. Progressive linkage would be your friend in that case. Something like a 1000cfm TB will give you plenty of air, but you're going to have a very touchy throttle at low RPM when you're not using boost.
Sounds like an awesome build, please keep us posted on it.
On the throttle body, I would keep it as small as you can where it'll still feed the turbo. Progressive linkage would be your friend in that case. Something like a 1000cfm TB will give you plenty of air, but you're going to have a very touchy throttle at low RPM when you're not using boost.
More Turbo
Joined: Nov 2015
Posts: 702
Likes: 111
Hi, im wanting to build the inline 6 in my 1995 ford f150. Im wanting to do a cnc ported head, micro squirt ecu, 1000cc injectors, custom intake manifold to run a mustang throttle body, turbo exhaust manifold with a s376, roller rocks, custom ground cam, forged rods and pistons. Can someone help me pick the right ones of each that I need? And can someone help me build a cam that will give me chop but still work well with the turbo. Thank you!
In that engine build there was a gross mismatch which resulted in a very short power band.
As far as cam selection, what rpm range do you want the engine power to be at?
This will also determine the engines compression ratio.
How much horsepower are you looking at making?
Promaxx CNC ported head with Harland Sharp roller rocker arms.
Molnar "H" beam rods
The next thing I'm going to tell you is that we are done with flat tappet performance camshafts because of the high failure rate.
We had two Crower custom performance cams fail last year.
The two very high performance 300 sixes built this year used roller cams from Bullet Cams roller along with the Crower roller lifters.
We are working with Straub Technology to be able to supply a set of roller cams and lifters at a lower cost.
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Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
Please keep me posted on the roller cam and lifters. My flat tappet is well broken in at this point and has been good for about 5 years now, but if I could get away from it, I'd be more than happy. I wanted to go roller when I built it, but couldn't find anyone with 300 blanks that they could make a roller cam out of.
More Turbo
Joined: Nov 2015
Posts: 702
Likes: 111
Please keep me posted on the roller cam and lifters. My flat tappet is well broken in at this point and has been good for about 5 years now, but if I could get away from it, I'd be more than happy. I wanted to go roller when I built it, but couldn't find anyone with 300 blanks that they could make a roller cam out of.
The Bullet cam and Crower lifters were $1500 but has gotten more expensive since the 8620 alloy steel for their billet roller cams is no longer available and Bullet has moved up to the more expensive tool steel.
Staub is using a different alloy steel and will keep the price low as stated.
Straub will offer a hydraulic roller lifter as soon as I can test one for fit and function in a 300 block.
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Cross-Country
Joined: Aug 2022
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A s376 turbocharger with a 76mm compressor inducer is too big for a 300 six for any street application as demonstrated by the Power Nation Video.
In that engine build there was a gross mismatch which resulted in a very short power band.
As far as cam selection, what rpm range do you want the engine power to be at?
This will also determine the engines compression ratio.
How much horsepower are you looking at making?
Promaxx CNC ported head with Harland Sharp roller rocker arms.
Molnar "H" beam rods
The next thing I'm going to tell you is that we are done with flat tappet performance camshafts because of the high failure rate.
We had two Crower custom performance cams fail last year.
The two very high performance 300 sixes built this year used roller cams from Bullet Cams roller along with the Crower roller lifters.
We are working with Straub Technology to be able to supply a set of roller cams and lifters at a lower cost.
In that engine build there was a gross mismatch which resulted in a very short power band.
As far as cam selection, what rpm range do you want the engine power to be at?
This will also determine the engines compression ratio.
How much horsepower are you looking at making?
Promaxx CNC ported head with Harland Sharp roller rocker arms.
Molnar "H" beam rods
The next thing I'm going to tell you is that we are done with flat tappet performance camshafts because of the high failure rate.
We had two Crower custom performance cams fail last year.
The two very high performance 300 sixes built this year used roller cams from Bullet Cams roller along with the Crower roller lifters.
We are working with Straub Technology to be able to supply a set of roller cams and lifters at a lower cost.
- what size turbo would u suggest? I want something that’s not going to lag but is still going to maximize the power. I’m not 100% on what I want the power band to be, what would u suggest for a street/daily driver. Also, what would be ur exact recommendations for cam, roller lifters etc
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More Turbo
Joined: Nov 2015
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- what size turbo would u suggest? I want something that’s not going to lag but is still going to maximize the power. I’m not 100% on what I want the power band to be, what would u suggest for a street/daily driver. Also, what would be ur exact recommendations for cam, roller lifters etc
if you are focusing more on upper rpm horsepower, then use a turbine housing with an .84 A/R (or close to it)
A roller camshaft with single profile around 210 to 214 degrees of .050" duration with a 112 LSA will get the job done.
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