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im interested in a 351 stroker as a project with for use in my puller. I looked at a book called "how to build a big-inch ford small block" and the stroker kits listed for the 351W are advertised for most of em to make max torque around 4000-6000 rpm. Sure the midrange i there, but can anyone suggest a stroker with awesome low-mid range torque? I dont wanna spin this thing high cuz of gas prices and shorter engine life. (i would like the stroker kit, camshaft, reccomended heads and whatnot with prices)
It would seem most kits are indeed designed to produce the biggest HP numbers.. it's gotta be a marketing thing. If you want a TQ based stroker for hauling, otherwise known as a mild build, then all you need to do is select a stroker rotating assembly with pump gas friendly compression.. 9-10:1 max, and then top end parts to complement your desired powerband. Use an RV style cam, good but not massive heads, like ported GT40's, WP Windsors, or maybe the smaller AFR heads, and an intake more tuned for low to mid power.
you can design the build anyway you want and get what you want. I'm working on a wheezer stroker build as well. Most people build strokers for upper rpm performance.
What you want is to do is choose the cam based on powerband desire and build the engine around your cam. ie a comp xe262 and 9:1cr will burn 87 pump and give you a flat torque curve from 2k-3600 but will not be much good over 4k. The stroke increase will increase volume so heads and ex system will need to match etc.
I am going to put together a build sheet in a week or so let me know if your interested in what i find...searching should also give you what you need.
What year is the engine. Carb or FI. With a 408 you'll have plenty of torque. The main problem, with EFI is you'll have to switch to a Mustang style manifold and TB to get the best performance. The stock and aftermarket truck SBF stuff is too restrictive for a stroker. The thing has got to breathe. I did mine trying to stay with regular bolt on truck stuff and only got 310 HO and 418 lbs of torque. This is still twice the stock numbers, but the fuel efficiency went to 9 MPG. If your serious about doing it right let me know and I'll give you some contacts for the right stuff. There was another guy Justin, "mustangGT221",that did a 393 and had the same restriction problems.
Last edited by 408bronco; Jan 17, 2008 at 08:51 PM.
Not Bone stock. Edelbrock truck EFI (just a tad better than stock) BBK 61mm Duel TB, 42lb injectors, FMS shortys, Bisanti 3" complete exaust.
The engine is a 408 stroker with a comp cam custom for the engine. Comp Cam Magnum Rollers and Lifters. comp cam hardened push rods. a Pro M 72mm alum billet mass air coupled to a K&N air charger. Afr 185 aluminum heads.
The 310 was rear wheel HP on a Dyno ( real one not a desk top like some of these speed freaks brag about) and 418 Lbs torque.
My mistakes 1. The heads, intake, MAF are too small. The 408 starves for more air, so much so that it sounds like a JET ENGINE sucking for air.
My correction, to be installed shortly, I have all the parts: 1. RHS 215cc Custom built heads and a Custom Cam from Jay at Cam Shaft Inovations. 2. TFS-R intake with 90mm flange. 3. Generation 2 lighting 90mm MAF. 4. 90mm Accufab throttle body.
Will require elimination of the EGR sensor as it is a 96. Earlier models can use a mustang type EGR using the TFS-R 75mm intake the 96 can't as it uses a different method of sensing.
Should get a min of 450 HP and gobs of torque. Don't let people tell you the runners are too short on the larger intakes. If you stroke the engine it drops the rpm range. And a .5" to a 1" spacer can help. There is another guy who converted his F150 or 250 using the mustang manifold and had a 427 stroker. He loves it. And he got alot of the stuff for his build right out of the junk yard. His name is James Duncan. His FTE name is termytOO, check out his gallery.
Also the Lightning forum here is good. Blurry94 has a GEn1 lightning that is basically the setup I am doing. He and his brother converted a earlier F150 over using the old stuff off his Lightning. He now has a super, super charger. I was going to use the GT 40 intake but it is too restrictive.
Hope that helps. Just don't go too small on the induction as you won't get the results you want.
Last edited by 408bronco; Jan 18, 2008 at 07:48 PM.
It's just the Mustang setup uses an internal EGR compared to the external truck style. So using non emission heads like RHS which don't have the intake exhaust crossover still renders the EGR useless. I don't even know if the heads could be drilled for it.