|
427 stroker
Hi there..first post...just purchased a factory five kit, and still trying to choose an engine set up.. I originall was going with an injected 347 stroker but when thinking about the overall cost to build, a 427 stroker non injected seems like the better way to go.. looking at the coast high kit. Is anyone using this kit?? what are your thoughts..also what heads are people recommending and intake??Any help would be greatly appreciated.
Thanks |
clk2 - hi there. I had the same issue when I built my car and specc'd the engine. In the end, I stayed with the 408 stroker, for the following reason - to get to 427, I understand that the piston pin ends up so high in the piston, that the oil control rings have to bridge the pin area, leading to poorer oil control.
Also, rod ratio is getting fairly poor on the 427 stroker. Wether these are real issues for engines like ours, that rarely see very high mileages, I am unsure, but my personal decision was to stick with the 408 (4" stroke, 4.03" bore, 6.2" rod length). you will need some good flowing heads to feed that stroker - I used Edelbrock Vic jrs, sure that other folks will have their own favourites. Were I building it now, I might look at the AFR heads. Because of height restrictions, I stayed with a performer rpm inlet manifold - this dual plane manifold actually gives my engine better low down torque than the Vic jr single plane item I was thinking about to begin with. Very streetable, but still kicks out 450+bhp. Starts to get breathless above 5500 because of the inlet manifold. Makes wonderful induction noises through the 800cfm edelbrock carby. I also used the Ford X303 roller cam. HTH |
clk2 --
I built a 425ci Windsor stroker. Wilf had a valid point about the oil ring being in the wrist pin bore, but I got away with that not being the case. Here's the highlights: 1979 351W block bored .060" Eagle ESP 4.100" stroke crank Eagle H-Beam rods Main girdle Comp Cams 230 duration, .544" lift 110 lobe separation Probe pistons, 22cc dish....10.3:1 Victor Jr Heads (bought bare, assembled myself to match cam) Demon 750cfm carb Comp 1.6:1 roller rockers and roller lifters Victor Jr. single plane intake Canton 7 qt T-sump oil pan Manley pushrods Edelbrock Victor water pump Cloyes double roller timing chain Ford Racing aluminum pulleys Streetdampr harmonic balancer All ARP studs...even valve covers, carb, oil pan, etc. MSD Pro Billet distributor MSD Blaster 2 coil Hays Borg & Beck pressure plate Hays Clutch Disc for Tremec TKO Hays Flywheel Lakewood Scattershield CVR 4.41:1 starter I assembled it myself, took it to Carl Grover Motorsports to have it tuned and dyno'd....it made 484hp at 5800 and 500 lb-ft at 4500. Total cost including bellhousing and clutch assembly..... ~$9500 |
clk2 --
I built a 425ci Windsor stroker. Wilf had a valid point about the oil ring being in the wrist pin bore, but I got away with that not being the case. Here's the highlights: 1979 351W block bored .060" Eagle ESP 4.100" stroke crank Eagle H-Beam rods Main girdle Comp Cams 230 duration, .544" lift 110 lobe separation Probe pistons, 22cc dish....10.3:1 Victor Jr Heads (bought bare, assembled myself to match cam) Demon 750cfm carb Comp 1.6:1 roller rockers and roller lifters Victor Jr. single plane intake Canton 7 qt T-sump oil pan Manley pushrods Edelbrock Victor water pump Cloyes double roller timing chain Ford Racing aluminum pulleys Streetdampr harmonic balancer All ARP studs...even valve covers, carb, oil pan, etc. MSD Pro Billet distributor MSD Blaster 2 coil Hays Borg & Beck pressure plate Hays Clutch Disc for Tremec TKO Hays Flywheel Lakewood Scattershield CVR 4.41:1 starter I assembled it myself, took it to Carl Grover Motorsports to have it tuned and dyno'd....it made 484hp at 5800 and 500 lb-ft at 4500. Total cost including bellhousing and clutch assembly..... ~$9500 |
For a 427W, AFR 185 heads are the way to go.
Pete |
I have a 427 small block built on a Dart Block. Very happy with it.
Eric @ Performance Engineering built it. It did 559 Hp & 564 Ft Lbs of Torque. It is a short stroke (4.00 in Stroke & 4.125 Bore) Some of the Specs: Dart 9.5 deck block AFR 205 Heads Comp Cams Hyd Roller (Eric's custom grind) Victor Jr Demon 850 Scat Fordged Crank H Beam Rods MSD It is in SPF 1572 and I am still breaking in. Very streetable Put on FE Valve covers (Cobra 427) with adepters for the traditional look Wayne |
427 stroker guys, what are the torque characteristics of your engines relative to RPM. Do they idle well around 1K? Also, do the AFR heads have the same exhaust manifold pattern as the Windsor heads?
|
AFR 185s do have the same exhaust header pattern as Windsor heads.
Mine's not quite a 427 (it's a 408), but it's got a pretty smooth idle. This is dependent more on your choice of camshaft than the displacement of the motor. Pete |
I'm running a 418 stroker with the AFR 225 heads, the bolt patern is the 3" wide pattern ( same as dart ).
As far as idle goes it"s pretty good at about 850 - 900 rpm. Motor makes 606 hp @ 6100 rpm and 572 ft. lbs of torque @ 5100 |
I'm in process of building a 427w on a Dart block. 4in stroke and 4.125 bore, King crank, J&E forged pistons, Victor Jr, Holley 750hp, Eagle H-rods, Brodix Track 1X heads, and LOTS OF MONEY!!!!! Builder said 600hp on pump gas and it will idle!
There anit nothin money cant build... Can I sell another quart of blood yet..?? |
clk2,
I have the CHP "427 Classic" that you are thinking about. I went with the base package with no upgrades what so ever. I have had it done and on the road for about 3 months now. I ordered it through their local distributor. Took a little longer to get than they said it would but I think that it was well worth the wait. With sending it to the distributor I was able to do the break in on the dyno so I have a baseline that this engine puts out. We hit 529HP @ 5700 RPM and 535 ft/lbs of Torque @4700 RPM. Very good in my opinion for a Windsor. On the road it is very drivable and doen't have any problems with any aspect of driving. Not sure of my current milage averages, my speedo is slightly off right now. One of my concerns was with having the warrenty, I wanted something with one if I was to plunk down a large amount of cash, you just can't go wrong with it. You will be very sastified with CHP in my opinion. Good luck, Todd |
Stroker with EFI
Anyone running EFI
|
I'm running EFI on my 408W
Pete |
| All times are GMT -7. The time now is 11:54 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: