Upgrading my Roadrunner - Hemi Truck Club
 
Go Back   Hemi Truck Club > HEMI | Trucks and Special Editions > Other Vehicles

Reply
 
Thread Tools Display Modes
 
Old 08-08-2007, 12:26 PM   #1
Senior Member
 
jlhram's Avatar
 
Join Date: Aug 2004
Location: Roanoke, Texas
Posts: 1,812
Upgrading my Roadrunner

Hoping to get some recommendations, upgrading from a mostly stock 383, with 906 heads, edelbrock performer intake and holley 670 street avenger carb. biggest complaint is valve train noise so I deffinetly want to go with a roller rocker setup. currently she puts out about 220hp to the rear hoping to get up past 300 on pump gas. Mostly street but wouldn't mind a few passes on the local 1/8 mile track and don't want to embarass myself. Also trying to not have to sell a kidney. So let me know what you think. I allways apppreciate the advice....Thanks ....Jim

jlhram is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-08-2007, 01:09 PM   #2
Senior Member
 
TheBoss's Avatar
 
Join Date: Dec 2006
Location: Kansas City
Posts: 5,440
Garage
Upgrading my Roadrunner

There's a guy at the track I've been meaning to talk to that's got a '68 RR with a 383. He's running low 13's high 12's, I'll see when he comes around if I can talk to him and pick his brain a bit. It's nothing that radical either, though it does sound mean.
TheBoss is offline   Reply With Quote
Old 08-08-2007, 01:59 PM   #3
Board of Directors (Jay)
 
Superjay's Avatar
 
Join Date: Jun 2004
Location: Isle of Palms, SC
Posts: 43,454
Upgrading my Roadrunner

Hey buddy, I'm very familiar with the 383-440 motors. What you've done so far, are good choices. The stock MoPar distributor is junk, even brand new. Replace it with any aftermarket Dist. A set of headers would be next. As time and money permit, a small Hyd. cam, with about 284 advertised duration, would work well. The heads really respond well to modifications. Installing the 2.14 Intake valve, and the 1.81 exhaust valve will make quite a difference. Good luck, and PM me if I can be of further help.
Superjay is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-08-2007, 03:29 PM   #4
Senior Member
 
TheBoss's Avatar
 
Join Date: Dec 2006
Location: Kansas City
Posts: 5,440
Garage
Upgrading my Roadrunner

Well... uh... yeah... what he said.
TheBoss is offline   Reply With Quote
Old 08-08-2007, 06:17 PM   #5
Senior Member
 
jlhram's Avatar
 
Join Date: Aug 2004
Location: Roanoke, Texas
Posts: 1,812
Upgrading my Roadrunner

Thanks for the replys, Jay, I believe the cam I have now is a 484 with a 260 duration. I was told it has a hemigrind cam in it. I'm running a steel crank and forged pistons. Got good compression and oil pressure. The valve train noise has me puzzled , I've replaced lifters once already and it still sounds pretty bad. Last set I put in were made by clevite, gonna pull the valve covers this weekend and see what it looks like. What's a good aftermarket distributor ? Thanks again I'll keep you updated on my progress.....Jim
jlhram is offline   Reply With Quote
Old 08-08-2007, 11:19 PM   #6
Board of Directors (Jay)
 
Superjay's Avatar
 
Join Date: Jun 2004
Location: Isle of Palms, SC
Posts: 43,454
Upgrading my Roadrunner

There should be no valve train noise. Something is wrong. Choices are; 1. Valve train geometry is off. 2. Worn rocker arms/or shafts.#3. and the most likely, the 906 heads where meant for leaded fuel. Unless hardened valve seats where installed, valve recession into the head is inevitable. #4, weak valve springs.
Superjay is offline   Reply With Quote
Old 08-14-2007, 02:17 AM   #7
Senior Member
 
Join Date: Aug 2004
Location: Daly City, CA
Posts: 1,470
Upgrading my Roadrunner

jlhram-I caught this a little late....I like the MSD distributors(pro-billet)with one of their 6-series ignitions boxes(I had this on my 65 Polara w/a 383)with one of there blaster coils.Hooker used to make a super-comp style header(I had these in my 69 RR about 22 years ago),recently,I had a set of Schumacher tri-y's(in the Polara).Mopar has a purple-shaft cam that is supposed to be a 276 duration cam(I think with 480-490 lift).Rocker-wise,to correct your problem-I would side with whatever advise Superjay would have as I haven't changed rockers in the 2 383's that I had.
kc1965 is offline   Reply With Quote
Old 08-18-2007, 10:15 AM   #8
Senior Member
 
jlhram's Avatar
 
Join Date: Aug 2004
Location: Roanoke, Texas
Posts: 1,812
Upgrading my Roadrunner

thanks again for the replys, with everything goin on I haven't had time to get in the garage and now the truck is acting up think the fuel pump is goin out. thanks again guys I'll keep you informed on any progress
jlhram is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Premium Vendor Showcase
n2 Speed Edge InTune Edge OCPerformance Parts

All times are GMT -6. The time now is 12:30 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.