2004r upshift 6500?

[elcamino383]

2004r upshift 6500? boost valve?

thinking about roller cam for my 383, might have power band of 3500-7000.. whats the highest shift rpm you can get from drilling govinor.. anything else you can do?

also wondering if i should get a 0.570" diameter TV boost valve
and 0.400" diameter low/rev boost valve. tranny builder told me i have .500 main boost valve now... this will make lots more holding pressure right? will that effect shift feel? how tough install?

 

[elcamino383]

anyone? thanks.

 

[chris718]

if you use an ss vbody and governor and modify the governor itll be good to about 6000rpms.if not ,use a non gn or ss valve body with an aa,by ,cr or ct valve body and itll go to 6800 plus.if you need the parts or further advice give me a ring,

 

[Lee Thompson]

shift points

I believe you can get a BRF to shift higher than 6000. I have a BRF trans that shifts @ 5800-5900 in my car. I loaned it to a friend with a Stage II eng. with Champion heads that ran 135 mph @ Bristol last year. It shifted @ 6300 in his car with no changes to the governor. Now I did remove 1 gram of weight from it originally to get my 5800-5900 shift points. This is a fact--1 gram off the small weight will raise your shift point 200 RPM.

 

[elcamino383]

ok thanks guys, what about the boost valves? should i get them for my application? will they change shift feel? how to install? thanks.