Author Topic: Help with a 390 stroker for my 56 fairlane  (Read 5284 times)

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hondakilla98

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Help with a 390 stroker for my 56 fairlane
« on: September 24, 2012, 11:06:13 AM »
I have a 56 Fairlane Club Sedan with a 390/C6 and a 3.00 9" rear with 28" tires. The 390 is a mild rebuild done in the 80's, .30 over, too much cam, stock small port heads, stock manifolds, performer 390, holley 735 vacuum secondary, with 100 shot NOS plate system. The trans is stock with a 2500 stall converter. I bought this from a friend that did most of the work on the car in the late 80's.

 The car has a louvered hood and I made the mistake of parking it outside with no cover on the air cleaner. Now it has had water in it for probably 2 years ( it's been a lost project for a while). I'm finally moving it up on my priority list and after I rebuild the front suspension, add discs and rebuild the steering box, I'll start on the engine.  My goals are to have a nice weekend cruiser that I take to car shows, drag race 5-10 times a year, and take on poker runs or short trips to the coast(150 miles each way) with my wife. I'd like to eventually have a 12 second car (with NOS and drag radials).

I'm mechanically inclined and do most of the work on my cars, but I've never built an engine. I  have a good friend that has built quite a few, that will help me with assembly. I also have a good local machine shop, I'll have to check with him and see how familiar he is with FE's. I was thinking I'd use the 428 crank I have sitting in the garage, but with the price of an internally balanced stroker. I think I'll sell it and buy a 4.25" stroker setup from Barry R, Keith Craft etc... So now that I know I want a 445, how should I proceed?

From reading this and the other fe forum, this is what I think I want to build. 4.25" stroker rotating assembly with H beam rods, .30 over 390 block, 10.8:1 compression, edelbrock 428 heads, performer rpm intake, 294s cam, 1 3/4"-2" headers, dual 3" exhaust with some kind of high flow muffler. If i put this short block together and put my small port heads on it with the performer 390 and the holley 735, would I be able to use it for a year until I could afford the top end? I realize the compression would be a little high for pump gas with stock heads, I can mix some race fuel in with 92 octane to fight detonation. My other concern is will I have enough vacuum for power brakes? Will I need a higher stall converter? Or maybe slightly higher gears(I'd rather not go over 3.25:1 in the rear)?

bartlett

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #1 on: September 24, 2012, 07:48:30 PM »
No on the vacume for power brakes, and yes you will need a stall .. I have that cam and its alot of cam .. and thats alot of motor .. I have just done that motor and It might be to much for the car .... I have a 3,500 stall and a vacume pump for the brakes....

jayb

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #2 on: September 24, 2012, 10:37:22 PM »
+1 on the vacuum; you are going to be marginal on vacuum with that cam.  You could run the engine with the old heads and the Performer intake, but it would be a significant mismatch for performance purposes.  But it wouldn't hurt anything to run it like that, and you'd notice a big difference when you put the new heads and intake on.  If you can swing it, maybe you should think about going with the Performer RPM right away; that would be a big help.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

hondakilla98

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #3 on: September 24, 2012, 11:30:27 PM »
Well I don't want to run a vacuum pump, and a new convertor isn't happening right away. So, what cam should I go with? Maybe the 282s or 270s??  I plan on running the minimum as far as valve train as well. Shaft end stands, restrictors in the heads, factory adjustable rockers, and appropriate valve springs. I don't plan on running this past 5,500 rpm. Headers, performer rpm, and exhaust will depend on budget. It currently has 2 1/4 or 2 1/2 duals with glass packs.

jayb

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #4 on: September 25, 2012, 11:55:41 AM »
I think the 282S would be about the perfect cam for that combination, because it will peak in power in the 5200-5500 RPM range, and give you a decent idle and enough vacuum for the brakes. 
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

rockhouse66

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #5 on: September 25, 2012, 05:33:29 PM »
This is more a question than an answer, but why would you go with a solid cam if you are running tall gears and a low stall converter in a street car?  Why not just use a hydraulic, like a Comp 270H or 268H?  I am guessing even the 282S solid will be on the ragged edge for PB vacuum.
Jim

hondakilla98

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #6 on: September 25, 2012, 10:53:41 PM »
I'm not going to drive it that many miles a year, so the maintenance of a solid lifter isn't a big deal. I'm going to step up to a 3000 or 3500 stall when the funds are available. And I'll end up changing the rear ratio after I get some miles on it and decide how steep I want it. But at least 3.25:1 or 3.50 with some form of limited slip.

hondakilla98

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Re: Help with a 390 stroker for my 56 fairlane
« Reply #7 on: October 01, 2012, 05:25:00 PM »
After crunching some numbers, I will run 3.50 gears in the rear end. I have 275/60/15's in the back now, and they barely fit. That's a 28" tire and with 3.50's cruising at 60 I'll be at 2600 rpm and 3000 at 70.