expected power/power range?
Thread Starter
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Tuned
Joined: Apr 2001
Posts: 443
Likes: 1
From: Athens, AL
expected power/power range?
here's the plan:
460 bored .030 over, polished rods, risers removed from crank, crank .010 under, ARP rod bolts/rods resized, TRW flattop pistons, 92 cc heads, 2.08/1.6 valves, 3-angle, street port, 218 @.050 cam, edelbrock intake, 750 cfm edelbrock carb, stock exh manifolds, dual exh w/ flowmasters or glass packs, and k&n filter.....just want to know what to expect out of it....
thanks all
(this'll be replacing the 429 in my 78 bronco: 9" total lift, 39" M/Ts, 4.56 gears.............)
460 bored .030 over, polished rods, risers removed from crank, crank .010 under, ARP rod bolts/rods resized, TRW flattop pistons, 92 cc heads, 2.08/1.6 valves, 3-angle, street port, 218 @.050 cam, edelbrock intake, 750 cfm edelbrock carb, stock exh manifolds, dual exh w/ flowmasters or glass packs, and k&n filter.....just want to know what to expect out of it....
thanks all
(this'll be replacing the 429 in my 78 bronco: 9" total lift, 39" M/Ts, 4.56 gears.............)
Postmaster
Joined: Feb 2000
Posts: 2,759
Likes: 2
From: Auburn,Al
expected power/power range?
similar to mine, except mine has headers and roller rockers, george davila ran it on the desktop dyno..... 380 hp@4300 rpm, 515 ft lbs from 2000-3500
1985 F-150/351Ho/c6/4wd~96,000 miles
1979 F-150extcab4x4/460/c6/6inchlift w/60rear44frnt 4.10 gears, 250 springs
37 boggers
1985 F-150/351Ho/c6/4wd~96,000 miles
1979 F-150extcab4x4/460/c6/6inchlift w/60rear44frnt 4.10 gears, 250 springs
37 boggers
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
expected power/power range?
If you run flattops with 92cc heads, I think your c/r is going to be around 8.5:1. The 460, like most internal combustion gas engines, is somewhat of a dog under 9.5:1. TRW (now Sealed Power Speed Pro)and others make forged, domed pistons that will bring your c/r up to where your planned mods will make you grin.
Thread Starter
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Tuned
Joined: Apr 2001
Posts: 443
Likes: 1
From: Athens, AL
expected power/power range?
the TRW flat tops i found have 19cc cups...i compared them to Keith Black 15cc cups, which advertise 9.2:1 with 92cc heads....KB 22cc cups advertise 8.8....i figured the TRW pistons will give around 9:1....also, the heads and block will probably need resurfaced....there is some pitting on the deck surfaces...how do i know if there is too much??
what i forgot to add is i want to use 87 octane without problems....
and what to do about heads...do i need hardened seats??
what i forgot to add is i want to use 87 octane without problems....
and what to do about heads...do i need hardened seats??
Mountain Pass
Joined: Jan 2001
Posts: 229
Likes: 0
expected power/power range?
If the heads are off a pre-74 engine (which they probably are not, due to the larger chambers) you should install hardened seats... But, since they are probably later model heads designed for use with unleaded, you shouldnt have to... they should already be in there...
Best of luck to ya.
J/.c
1965 Ford Galaxie 500 (okay, so not quite a truck)
ANOTHER 460/C6 @ 365hp/519 lb.ft.
14.36@100.4, 16-18 mpg AHHAAAHAAAHAAA!
Best of luck to ya.
J/.c
1965 Ford Galaxie 500 (okay, so not quite a truck)
ANOTHER 460/C6 @ 365hp/519 lb.ft.
14.36@100.4, 16-18 mpg AHHAAAHAAAHAAA!
New User
Joined: Oct 2001
Posts: 6
Likes: 0
expected power/power range?
hard seats not a big issue, use 2.19 anf 1.7 valves. ALWAYS have a block sonic checked BEFORE having it bored. Jake
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Thread Starter
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Tuned
Joined: Apr 2001
Posts: 443
Likes: 1
From: Athens, AL
expected power/power range?
[font size="1" color="#FF0000"]LAST EDITED ON 14-Oct-01 AT 09:36 AM (EST)[/font][p]yup...gonna have it checked....also, i went ahead and put in an order for 92 cc heads cut for 2.19/1.7 valves, 3-angle, hardened seats...all that good stuff
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