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Author
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Topic: Cheapest way to go to 400cid SBF?
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Bloose
Gearhead Posts: 751
From: Milwaukee, WI
Registered: Dec 2001
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posted 08-01-2004 03:04 AM
   
I finally took possesion of my new to me 1968 Fairlane wagon. It is going to be a long slow road to restoration because this thing needs just about everything. The body is near rust free (with the exception of the storage area in the rear) so it was worth the purchase, but everything else is rough. The car has a 302 now, but it's on it's last leg. I am shooting for using this thing to tow my Failane to the track and possibly tow our camper around so I'm looking for ideas for the motor. Nothing fancy but I want plenty of towing power. I'd like to stay with a SB because I have lot of stuff around for one. My thought is a really mild (towing torque only needed) stroked 351. Because it will be a low RPM motor I am thinking cast crank and stock type rods along with cast pistons. I would like it to be stone reliable, smooth, easy to drive, start, and run, and most of all cheap as possible. Any one have any suggestions? i.e. block, crank, rods, etc. I'm just starting the thought prosess on this but it's never too early to start researching. B-loose
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Rustang
Gearhead Posts: 805
From: Clarion PA
Registered: Nov 2000
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posted 08-01-2004 09:00 AM
I'd go with the 392 deal. It uses 302 pistons, 351W rods, and there's alot of choices for cranks. There's some dirt cheap bottom end kits out there for this combo------------------
'68 mustang 351 clevor- 10.92@124
'67 Stang, 351W -11.18@118
'69 351C Torino-14.90@100
'78 Pickup 351W-15.56@88
'79 Pickup 460 ET=??
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kid vishus
Gearhead Posts: 6395
From: middle of NC
Registered: Oct 2000
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posted 08-01-2004 09:05 AM
quote:
Originally posted by Rustang:
I'd go with the 392 deal.
I'll second that. With a mild cam it could be made to idle at 700 rpm, and would have a ton of off idle torque to help get a trailer moving.
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Bloose
Gearhead Posts: 751
From: Milwaukee, WI
Registered: Dec 2001
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posted 08-01-2004 10:15 AM
That's just the sort of thing I'm looking for. Who makes the crank for this kit? Any more info?B-loose
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scottford351
Journeyman Posts: 96
From: reedsville ohio usa
Registered: May 2003
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posted 08-01-2004 11:24 AM
Beware of the cheapie cast cranks.The Hawk brand cranks for the stock length rods have big time piston to counter weight problems.  I have one of these $275 boat anchors but no boat.  ------------------
91 LX 398w street/bracket 6.88 1/8 60FT 1.44
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Kyle
Gearhead Posts: 426
From: Sumner, WA
Registered: Dec 2001
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posted 08-01-2004 11:28 AM
The best deal I have found on a 3.85" stroke crank (what you will need) is from Speed-o-motive (http://www.speedomotive.com/NEW%20CRANKS.HTM). They want $264 for a new nodular cast crank, and they offer free shipping on the cranks. Another brand that has got great reviews is Scat. They make the 3.85" crank in their 9000 series nodular cast material, and CNC-Motorsports (http://www.cnc-motorsports.com/category.asp?CtgID=7658) has them for $359.10, and also free shipping.You also need to take into account a balance job. According to most people who build these "poor man's strokers" it's a very important step. Also, using flat top 302 pistons with a 64cc head will net around 10.6:1 compression, and with 60cc heads you get 11.4:1. So, unless you want higher compression, you may want to think about dished pistons.
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Bloose
Gearhead Posts: 751
From: Milwaukee, WI
Registered: Dec 2001
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posted 08-01-2004 11:32 AM
Thanks guys! Good point about the pistons. I'm thinking 9:1 for compression. With the size cam I'll be looking I'm thinking I'll have to keep compression pretty low.B-loose
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