390 question??
#1
390 question??
Hey everybody it's been a while since I have been on here but I have a question about my 68 with a 390. After doing some looking around on here and reading some earlier threads I decided to replace the two barrel intake with a Holley Street Dominator that I already had an put a 650 holley(spreadbore) that I also already had. I'm not fond of the q-jet replacement over a square bore but thats what I had. And I also installed a set of Heddman headers too. There was a significant power improvement and I was just wondering if anyone could give me some rough numbers on hp now as I've got the old fella flowing pretty good now Thanks guys for any info!
#2
New pictures of progress
Here is also a picture of what else I have been up too. I replaced both inner fenders and swapped the radiator support with a good one from a 74. Installed the clear headlights and replaced the Ranger emblem. And also the engine I described in the last post. Just thought I'd share these pictures for others to see
https://www.ford-trucks.com/forums/p...ctureid=121618
https://www.ford-trucks.com/forums/p...ctureid=121619
https://www.ford-trucks.com/forums/p...ctureid=121618
https://www.ford-trucks.com/forums/p...ctureid=121619
#3
Hey Lucas, you have that engine looking good. The stock truck 390 came at about 235 hp. With headers, intake/carb combination I'd guess you've added 30-50 hp. Depends on your ignition system and how you tune it now. The compression ratio of the truck is what holds the engine back, but it does make it a good work engine. If you want more power/torque then your next step would be the cam. If you want to increase the idle and throttle response as well as any mis-fires at higher rpms, them you'll need to upgrade the ignition system. There is a good article in the 73-79 forum in the tech sticky about the ignition upgrades.
Cheers.
Cheers.
#4
Thread
Thread Starter
Forum
Replies
Last Post
earnie
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
5
09-12-2009 06:27 PM
adamraaron
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
23
10-13-2007 01:34 PM
1976F2504X4
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
11
08-05-2004 10:12 PM
hbtwarrior
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
6
02-01-2004 03:47 PM