[hobbyhorse]

I need some opinions on about where I need to start as a baseline line for jetting my fast back. The 289 has a ported torker 289 intake, 165cc afr heads, 230 degrees intake duration, 1/58 hooker comps, around 11:1 compression, mallory unilite ( needs recurving), and a stock Holley 650dp with stock 66/72 jets. It doesn't get a lot of road time or strip time, still not complete. I really need a recommendation for a good safe starting point. It seems fairly strong now but I feel the jetting needs some help.

 

[tjcrawfo]

[No message]

 

[tjcrawfo]

sorry, anyway my combo is comp 270hr 357windsor with 9.8:1 and world sr heads. I have a quick fuel technologies 650 vs not dp but I found that 70/76 works well w/ my combo.

 

[Motorhead]

When I had the 650dp on my 289, which is very similar to yours except for my Windsor Jr. heads and 236 camshaft, and mine liked to be a little richer than stock, I settled on 70/76 jets which seemed to run great.

 

[thekingofazle]

I ended up with 71/72's if I remember correctly on my 302 with Roush 200's a Xtreme 268h and a 650DP.

 

[ckelly]

Start with the stock jetting and only change it if the car dictates it. Mine ran stock for 2 years before I installed the funnelweb, then I had to go up one all around.

 

[igo1090]

72 - 78

 

[gork1rogues]

My comparable setup with both 650vs and 700dp liked 70-75 the best.

<font size=-1>[ This Message was edited by: gork1rogues on 3/31/06 4:21am ]</font>

 

[tonys10sec306]

i would use stock jetting and go from there