What is compression and did you have hardened seats installed for the exhaust valves? If you did not have hardened seats installed then I would run a 50/50 mix of av-gas all the time. That is 50%premium/50% av-gas.
Fuel Mixing?
So, I'm more or less a complete Novice.
Never fully rebuilt a engine before, or tranny/t-case
But I'm going to some mud drags this weekend, and it was suggested to me that maybe i should mix in some AV gas and play with timing, to see if i can get a boost.
Rig:
1973 Ford F-450 Frame (shortened... ALOT)
1975 Jeep CJ5 Body
1971 Lincoln 460 DIVE-6015-A2B Block
C-6, NP205, 6.72 geared Rockwell Top Loaders
47" Super Swamper LTB's
TOPS 4300-4500 # loaded (with Fuel, and Me)
*EDIT* Forgot, Motor is stock, minus the Rebuild (all bearings 10 over, and overbore of 0.030)
I was plenty fast last year, But i want to see what i can weasel out of this puppy. Any thoughts on AVgas mixes, like AV+87/89/92, and in what ratios?
Also, what sort of timing adjustments should i make for that mixture?
Any help is appreciated, I'm just a n00b
Thanks!
Never fully rebuilt a engine before, or tranny/t-case
But I'm going to some mud drags this weekend, and it was suggested to me that maybe i should mix in some AV gas and play with timing, to see if i can get a boost.
Rig:
1973 Ford F-450 Frame (shortened... ALOT)
1975 Jeep CJ5 Body
1971 Lincoln 460 DIVE-6015-A2B Block
C-6, NP205, 6.72 geared Rockwell Top Loaders
47" Super Swamper LTB's
TOPS 4300-4500 # loaded (with Fuel, and Me)
*EDIT* Forgot, Motor is stock, minus the Rebuild (all bearings 10 over, and overbore of 0.030)
I was plenty fast last year, But i want to see what i can weasel out of this puppy. Any thoughts on AVgas mixes, like AV+87/89/92, and in what ratios?
Also, what sort of timing adjustments should i make for that mixture?
Any help is appreciated, I'm just a n00b
Thanks!1 - 7 of 7 Posts
bigblok86ranger:
As far as i know, Compression is stock, minus whatever difference the 0.030 overbore made. And i was given a set of rebuilt heads, and told they were Standard Rebuilds. If hardened seats are a regular on head rebuilds, then I'm sure i have them. If not, then no
95lightiningguy:
That may be True, Actually it probably is. But, I figured may as well try it once, see what happens. Motor is plenty strong, and is already scaring me sometimes - But thats part of the fun
So, 50/50 mix. What should i do with the timing? Advance, or retard? How far? Realisticly, following through this those, what would you expect it to pick up? Stock ratings i've found for the 68-81 Lincoln 460's were already rating 365hp and 380-400tq at the flywheel, though I'm probably wrong.
As far as i know, Compression is stock, minus whatever difference the 0.030 overbore made. And i was given a set of rebuilt heads, and told they were Standard Rebuilds. If hardened seats are a regular on head rebuilds, then I'm sure i have them. If not, then no
95lightiningguy:
That may be True, Actually it probably is. But, I figured may as well try it once, see what happens. Motor is plenty strong, and is already scaring me sometimes - But thats part of the fun
So, 50/50 mix. What should i do with the timing? Advance, or retard? How far? Realisticly, following through this those, what would you expect it to pick up? Stock ratings i've found for the 68-81 Lincoln 460's were already rating 365hp and 380-400tq at the flywheel, though I'm probably wrong.
Well, The heads are ported/polished rebuilt heads, not sure from what. Forgot i had a edelbrock performer intake, and i forgot that my standalone engine management system compensates timing/fuel stuff for me. Threw in av gas bout 60/40 mix, thing flew. When the fuel pump worked
1 - 7 of 7 Posts
