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Author Topic:   Cheapest Backup motor we can build???
Xtreme12x
Dirt Forum Champ
Total posts: 874
posted December 03, 2004 12:53 PM  
Ok here is the challenge...
Your team needs a backup motor for the hobby stock class. You want to put decent bottom end parts in it to keep it alive, but nothing past re-done stock parts...
The cheapest I came up with was just at a grand...
Midwest Motorsports 355 Kit-$379.99
Stock Crank Re-Ground- $100.00
Stock Rods Re-Conditioned $89.99
Claimer Pan/Pickup On sale $39.99
OEM Replacement Balancer $44.00
Rocker Arms $39.99
Push Rods $24.96
Valve Spring Kit for Heads $39.99
Heads 882/441/993 $free
Valves for heads around $80.00
Vavle Covers on sale $10.00
Cast Intake $Free
Timing Cover $Free
Oil Pump Shaft $6.99
Rocker Arm Studs $9.99
This is assuming you can get a decent block that doesn't need bored, heads just do a lap job on, powerwashing the heads intake and block for cleaning.

That takes you to a total of $865.89 without tax... not too bad, it would have hyperutectic pistons, decent cam, rods and crank... the heads wouldn't be the greatest but I think it'd be respectable for a night or two..
The 355 Kit includes everything for a short block less Block rods and crank...
Lets see some other cheap motors

BrianW
Dirt Freak

Total posts: 385
posted December 03, 2004 04:07 PM  
Same thing - minus the crank reconditioning - as long as the engine didn't spin a bearing and is in OK shape... Skip the valves, for a really cheapo - elongate the slot on the rockers if you're running a high-lift cam...

Get a set of stock reconditioned rods from e-bay - recond with aftermarket 190k PSI bolts can be had for $40-50 all the time...

Where are you getting valvecovers for $10 and the pan/pickup for $39?

Wildside17
Dirt Maniac

Total posts: 119
posted December 03, 2004 04:24 PM  
Northern Auto Parts has the kits for 159 saving you 220 dollars more.

zeroracing
Dirt Forum Champ
Total posts: 1876
posted December 03, 2004 10:00 PM  
Cheapest motor I ever ran was a 355. old set of double hump heads that i got from the corner of my uncles garage. then i took 3 blown motors. stuck the pistons and rods that were good out of them into a new block that was only bored and honed and maged. then i put in an old cam(it was cheap new one just never got used) that my uncle had left over from alot of years back. stock crank with emery cloth touch up. and moroso pan. the pan was worth the most. ran all year. honestly was the best motor i ever ran.
cost a few hundred bucks.
point is if you want a cheap back up look into used parts. they may suprise you.

speedy46
Dirt Maniac

Total posts: 165
posted December 04, 2004 07:05 AM  
hey xtreme go see what parts rick has out of blown motors and just use a turned down stock crank rick or grandpa should have a set of stock rods then just get some sealed power pistons your 441's just have kent or grandpa do a cheap valve job on them and u got yourself a cheap motor but one of your buddies should have some stock parts out of old motors

rico 08
Dirt Forum Champ
Total posts: 1139
posted December 04, 2004 07:15 AM  
I don't think you can find a block that won't need bored..my el cheapo has ohio cast pistons($95 of ebay)stock x rods($50)paw cam(44.95),bowtie intake($80-ebay)882 heads($25)timing chain was left over two peice set(free)windage tray and oil pan from a vortec(free)etc..right around $700-$800 total give or take......

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted December 04, 2004 09:37 AM  
speedy if i used parts from ricks blown up motors it wouldn't pass tech

19J
Dirt Freak

Total posts: 370
posted December 05, 2004 09:51 PM  
I agree with wlid northern auto parts. About $200 then if its just for a night or 2 I wouldnt worry about studs. I would try to find a whole block or shortblock and bore it most places about $100 new kit $200 then use some of your prices I say $400. Valve covers(which you could use stock for a night or off other motor) wouldnt mess with valve springs,balancer,push rods,rockers,or studs. Just dont turn it high and it will last a night or 2. If you are looking for like a 5 6 week replacement then yeh you could do all that stuff but just a ol cheapy back up i wouldnt. Its all what you want to do and how much you want to spend.

racin78p
Dirt Freak

Total posts: 333
posted December 07, 2004 04:59 AM  
The cheapest spare engine is your buddies granpa's 327 out of the grain truck. No kidding. A friend did it and ran the you know what out of it for 5 or so weeks, and he won a race. Gotta give it up for the old 3-2-7's.

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racin78p
if it ain't fun, then don't run

sideways
Dirt Forum Champ
Total posts: 715
posted December 07, 2004 11:01 AM  
I needed an engine for a pure stock once for one weekend.Stock metric thin ring pistons(rings were chrome moly and cast mix)stock rods,left over cam,old double hump heads bought for back up used oil pump and cheap gaskets.gaskets $100,heads $200(back ups)$45 entry fee.To much power for dry slick track priceless lol

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