Budget 383 rotating assembly ?
Thread Starter
Racer
Joined: May 2004
Posts: 288
Likes: 0
From: Tigard OR
Budget 383 rotating assembly ?
What do you guys think of a 383 rotating assembly like this for a budget build?
Has anyone used a kit like this, good or bad experiences?
http://cgi.ebay.com/ebaymotors/Eagle...Q5fCarQ5fParts
Has anyone used a kit like this, good or bad experiences?
http://cgi.ebay.com/ebaymotors/Eagle...Q5fCarQ5fParts
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
What do you guys think of a 383 rotating assembly like this for a budget build?
Has anyone used a kit like this, good or bad experiences?
http://cgi.ebay.com/ebaymotors/Eagle...Q5fCarQ5fParts
Has anyone used a kit like this, good or bad experiences?
http://cgi.ebay.com/ebaymotors/Eagle...Q5fCarQ5fParts
Befoe you do anything with the crank try a harmonic blancer on as we had a cusotmer bring in 2 for balancing and both you could push the balancer on by hand and he called Eagle and they said it was fine HMMMMMMMMM
He sent them back and went to a scat crank the snouts measured fine.
Becareful
Last edited by BLOCKMAN; Sep 15, 2010 at 09:13 PM.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I really don't care for Eagle either I returned one their more expensive forged stroker cranks because it wasn't straight enough for me, you can get a scat9000 crank and use their forged rods for about the money 
Drifting
Joined: Aug 2004
Posts: 1,883
Likes: 124
From: Lubbock TX
Scat stuff tends to be a lot closer to spec, as BlockMan said.
I'd buy the parts individually, then have them balanced locally AFTER trial fitting and grinding where needed. Scat makes a good cast crank, their entry level capscrew rods are solid pieces, I'd probably use SpeedPro pistons and Clevite bearings along with moly rings. There's a lot bigger selection of pistons for this combo with 5.7" rods than either stock or 6.0, keep that in mind.
While you're at it, check at your local machine shops and see if you can find a good 4-bolt 1-piece rear main seal block that's drilled for a mechanical fuel pump. OEM roller lifters are inexpensive as are cams for 'em, plus you'll get the 1-piece rear main for less headaches. Also, if your engine is original, you'll get to store it for future use, if you ever decide to take it completely back to stock.
I'd buy the parts individually, then have them balanced locally AFTER trial fitting and grinding where needed. Scat makes a good cast crank, their entry level capscrew rods are solid pieces, I'd probably use SpeedPro pistons and Clevite bearings along with moly rings. There's a lot bigger selection of pistons for this combo with 5.7" rods than either stock or 6.0, keep that in mind.
While you're at it, check at your local machine shops and see if you can find a good 4-bolt 1-piece rear main seal block that's drilled for a mechanical fuel pump. OEM roller lifters are inexpensive as are cams for 'em, plus you'll get the 1-piece rear main for less headaches. Also, if your engine is original, you'll get to store it for future use, if you ever decide to take it completely back to stock.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
also ...best to state up front what year-model you're working with & how you'll use it.
also ... if you use small combustion chamber heads (like most '69 sbc came with) you probably will not want a flattop 383 ... the compression will likely be too high for mild street ... see dish/reverse dome piston
before you buy anything ... identify what heads you'll use & learn to use a reliable static compression ratio calculator such as this one from Federal-Mogul aka sealed power/speedpro
http://www.fme-cat.com/Calculator4.aspx
also ... if you use small combustion chamber heads (like most '69 sbc came with) you probably will not want a flattop 383 ... the compression will likely be too high for mild street ... see dish/reverse dome piston
before you buy anything ... identify what heads you'll use & learn to use a reliable static compression ratio calculator such as this one from Federal-Mogul aka sealed power/speedpro
http://www.fme-cat.com/Calculator4.aspx
Pro
Joined: Apr 2005
Posts: 591
Likes: 7
From: Batavia IL
Well I have used eagle components for several engines I have built including a 383 stroker, 496 stroker, 408, 540 bbc. All were very powerful engines that never had a rotating component failure after several dragstrip passes and street miles. The 383 engine could do low 11's in the quarter mile on motor and was sprayed with a 150hp shot of nitrous to go low 10's in a 3400lbs camaro. I used pretty much the same kit you posted. This was my little brothers car and he must of put over 20,000 miles on the engine and over 100 1/4 passes on it before we sold it in perfect working condition so that we can upgrade the engines power. the vette in my sig had an all eagle rotating assembly 496 that was doing 8.30's on 400 shot of nitrous. 9.90's on motor only. never hurt the short block on it.
Last edited by Tumarr; Sep 16, 2010 at 02:23 PM.
