383 stroker advice
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Thanks for all the replies. The heads I have were decked too much.
Sooo, now I need heads too :drunk: . I want to stay with the old style outer parimeter valve cover mounts and really don't want to deal with buying used. Any sugestions for the best heads for the money. Looks like I may be priced out of the stroker now,
thanks again :thumbup:
Sooo, now I need heads too :drunk: . I want to stay with the old style outer parimeter valve cover mounts and really don't want to deal with buying used. Any sugestions for the best heads for the money. Looks like I may be priced out of the stroker now,
thanks again :thumbup:
Melting Slicks
Joined: Dec 2009
Posts: 3,229
Likes: 656
From: Thunder Bay
My 79 runs a 383 with 5.7 rods, externally balanced. I've been running it for years, since before there were internally balanced cranks available. Its a great motor. I rebuilt it last winter and moved up to a hydraulic roller (Comp Cams Magnum). Didn't think the cam swap could be worth the money but it is. One of the best mods you can make. I use the Trick Flow heads, but would look at Edelbrock or another aluminum head next time. Too many issues getting the Trick Flow heads to work, and don't believe they are any better.
Bottom line: 383's are cheap to build and well worth the money. Buy the best heads you can afford. If you can still afford the roller cam, its well worth it. With aluminum heads aim for compression in the 10:1 range.
Bottom line: 383's are cheap to build and well worth the money. Buy the best heads you can afford. If you can still afford the roller cam, its well worth it. With aluminum heads aim for compression in the 10:1 range.
Melting Slicks
Joined: Apr 1999
Posts: 2,010
Likes: 3
From: Moon Twp. PA USA
My 79 runs a 383 with 5.7 rods, externally balanced. I've been running it for years, since before there were internally balanced cranks available. Its a great motor. I rebuilt it last winter and moved up to a hydraulic roller (Comp Cams Magnum). Didn't think the cam swap could be worth the money but it is. One of the best mods you can make. I use the Trick Flow heads, but would look at Edelbrock or another aluminum head next time. Too many issues getting the Trick Flow heads to work, and don't believe they are any better.
Bottom line: 383's are cheap to build and well worth the money. Buy the best heads you can afford. If you can still afford the roller cam, its well worth it. With aluminum heads aim for compression in the 10:1 range.
Bottom line: 383's are cheap to build and well worth the money. Buy the best heads you can afford. If you can still afford the roller cam, its well worth it. With aluminum heads aim for compression in the 10:1 range.
Instructor
Joined: Sep 2004
Posts: 182
Likes: 0
From: Brentwood TN
I built my 383 to be a great driver - it runs very strong but idles like its stock. I have no issues with it. It probably runs 13's - My friends wants me to race it against my wife's BMW 335i - it runs mid 13's ....
Engine Analyzer 3.3 (desktop engine dyno software). Results were 382HP at 5000 RPM with 433 ft lb torque at 4000 RPM
Stroked 383
Eagle Street And Strip Rotating Assembly Speed Pro 5.7 Rods with Hypereutectic Pistons w/Teflon Coated Skirts – 9.0:1 compression
Block Prep - Thermal Cleaned,Shot Blasted,Magnafluxed,Bored & Honed .030" over with Torque plates,Square Decked,Align Bored & Honed,Clearanced for Stroker Crank,Balanced.
Cam - Comp Cams XE256H-10
Gross Valve Lift .447/.454
Duration At 0.006 Tappet Lift 256/268
Comp Cams Pro Magnum Rocker Arms 1.52
Transmission: Four-Speed Muncie M21
Installed Manifold: Edelbrock Performer #2101
Distributor Single Point, Uniset contact, RFI shield, Vacuum Advance
Single Point Tach Drive
http://73corvetteproject.blogspot.com
Engine Analyzer 3.3 (desktop engine dyno software). Results were 382HP at 5000 RPM with 433 ft lb torque at 4000 RPM
Stroked 383
Eagle Street And Strip Rotating Assembly Speed Pro 5.7 Rods with Hypereutectic Pistons w/Teflon Coated Skirts – 9.0:1 compression
Block Prep - Thermal Cleaned,Shot Blasted,Magnafluxed,Bored & Honed .030" over with Torque plates,Square Decked,Align Bored & Honed,Clearanced for Stroker Crank,Balanced.
Cam - Comp Cams XE256H-10
Gross Valve Lift .447/.454
Duration At 0.006 Tappet Lift 256/268
Comp Cams Pro Magnum Rocker Arms 1.52
Transmission: Four-Speed Muncie M21
Installed Manifold: Edelbrock Performer #2101
Distributor Single Point, Uniset contact, RFI shield, Vacuum Advance
Single Point Tach Drive
http://73corvetteproject.blogspot.com
Last edited by Frank O'Hara; Dec 15, 2009 at 04:07 AM.
Instructor
Joined: Sep 2004
Posts: 182
Likes: 0
From: Brentwood TN
Here's a multi-part article that dyno many components
http://www.superchevy.com/technical/...ine/index.html
http://www.superchevy.com/technical/...ine/index.html
Melting Slicks
Joined: Dec 2009
Posts: 3,229
Likes: 656
From: Thunder Bay
Some (maybe all) aluminum valve covers don't fit. I had to grind the crap out of a set of LT-1 valve covers to get them on. Had some clearance issues between the rockers and the valve covers. The guide plates are unique to the TF heads, as are eight of the rocker studs. Had trouble installing aftermarket springs. Most don't fit. Comp Cams beehive springs worked. Just a lot of oddball parts. Very difficult to make them fit & work. Once they're on, they work well.
Instructor
Joined: Sep 2004
Posts: 182
Likes: 0
From: Brentwood TN
I used 1" valve cover spacers - painted orange - I think I got them from Jegs - I have roller rockers and they worked great and kept the car looking stock
Valve Cover Spacers
My Engine in the car with the spacers
Valve Cover Spacers
My Engine in the car with the spacers
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