Performance Needs...
Thread Starter
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Senior User
Joined: Sep 2006
Posts: 162
Likes: 0
From: MN
Performance Needs...
My first Ford Truck was a '90 F150 4x4 with the EFI 4.9 and a four
speed. High miles and fuel consumption retired the truck to the farm...
I always liked the six and now I would like to build a highly respectable
torqued-out performance version...
Where to start? I see cams everywhere, flat top pistons, headers,
intakes, chips for EFI, and the list goes on.
How many ways can this be accomplished? Has anyone built a low-
end hauler? What kinds of mods? Maximum bore sizes? Aspiration?
If only I could find a sroker crank!
Any and all input and experience would be appreciated, Thanks!
BTW, and "oh yeah, i got a turbo laying around too..."
speed. High miles and fuel consumption retired the truck to the farm...
I always liked the six and now I would like to build a highly respectable
torqued-out performance version...
Where to start? I see cams everywhere, flat top pistons, headers,
intakes, chips for EFI, and the list goes on.
How many ways can this be accomplished? Has anyone built a low-
end hauler? What kinds of mods? Maximum bore sizes? Aspiration?
If only I could find a sroker crank!
Any and all input and experience would be appreciated, Thanks!
BTW, and "oh yeah, i got a turbo laying around too..."
Thread Starter
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Senior User
Joined: Sep 2006
Posts: 162
Likes: 0
From: MN
Originally Posted by scottfreeman
Mine runs 300hp, 300ft-lbs naturally aspirated. great torque monster.
Last edited by Gofigurethis_01; Feb 21, 2007 at 04:39 PM.
Elder User
Joined: Nov 2005
Posts: 733
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if you're looking for a stroker crank, take a look under my past posts, or do a search for col. flashman. there was a recent string discussing the method of getting a stroker crank for the six. its called offset grinding, and its about the only way other than a custom order. make sure you get the right turbo, as the wrong one will not help, and may hurt, or destroy your engine.
Elder User
Joined: Nov 2005
Posts: 733
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okay... i found it, col. has a very nice, clean, quality build...
https://www.ford-trucks.com/forums/5...questions.html
check out his gallery and build stats
https://www.ford-trucks.com/forums/5...questions.html
check out his gallery and build stats
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Posting Guru
Joined: Jan 2005
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From: the beaches of florida
Originally Posted by scottfreeman
Mine runs 300hp, 300ft-lbs naturally aspirated. great torque monster.
Also, what have you done to your six?
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Fleet Owner
Joined: Sep 2005
Posts: 28,609
Likes: 18
From: Lake Tahoe, Nevada
I think you can spend your money more wisely than increasing stroke. The 300 is basically a stroked 240. It's greatest performance deficiency is in the the breathing department. The stock intake and exhaust manifolds are restrictive and so are the ports and valves. If you want to go all out, increasing the valve size, porting and polishing is probably your best starting point. Lots of people have gotten good performance with the stock valves, but the ultimate rpm is limited. The bottom end can take all kinds of top end mods though. An easy route to higher compression is to start with a 240 cylinder head and go to work on it to improve the breathing capacity.
Dual Webers are great, but you have to do head, cam and headers to take advantage of the additional flow that they offer.
Dual Webers are great, but you have to do head, cam and headers to take advantage of the additional flow that they offer.
Elder User
Joined: Feb 2006
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From: Cascade, ID
My 300
Starting at the top:
Ported & Polished 240 head
Bigger Valves, 5 angle valve job
Offy DP Intake, Holley junk 390cfm
Hedman full length headers
2.5" x-pipe, dual 3" exhaust
Fischer balancer from Clifford
Bored to 309 cid
9.5:1 compression
rebalanced rotating assembly
custom ground cam
Pertronix, distributor curved for application
MSD 6A, MSD Offroad coil
Ported & Polished 240 head
Bigger Valves, 5 angle valve job
Offy DP Intake, Holley junk 390cfm
Hedman full length headers
2.5" x-pipe, dual 3" exhaust
Fischer balancer from Clifford
Bored to 309 cid
9.5:1 compression
rebalanced rotating assembly
custom ground cam
Pertronix, distributor curved for application
MSD 6A, MSD Offroad coil
