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Author
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Topic: Who all has 390's in thier pony
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67mike
Gearhead Posts: 164
From: Arab,AL
Registered: Mar 2001
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posted 11-14-2002 01:13 PM
   
Any one have 390's in their pony. I am leaning hard towards this.Pro's and con's appreciated.
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Robert K
Gearhead Posts: 514
From: Nashville, TN
Registered: Apr 2000
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posted 11-14-2002 01:57 PM
I'm not sure about other years but for 67/68 clearance is very tight around the sides of the engine for spark plug or exhaust work etc. I've also heard they don't handle as well as the small blocks. I personally would prefer the small block but I know the 390's seem to be popular. ------------------
67convertible 289/auto
65fastback 302/4sp
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1trickpony
Gearhead Posts: 107
From: Escondido, Ca
Registered: Oct 2001
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posted 11-14-2002 04:28 PM
I have a 390 in my Mach 1. I love the power this thing makes. They are expensive to build and they have some quirks you have to deal with(Oiling issues etc)but they are reliable and capable of gobs of power. If youa re going to build one I would strongly recommend picking up Steve Christs' FE based book. The information he provides in this book is invaluable to the FE builder.Dave ------------------
1969 "S" code Mach1
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68 S-code GT
Gearhead Posts: 1129
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 11-15-2002 09:04 PM
Changing the plugs or tightening the header bolts can be a real pain! They do weigh more than a small block but don?t all big blocks? If you run an aluminum intake you will save a lot in the weight department because the cast iron ones weigh a ton. I think my fastback handles great with GT springs, front and back sway bars, KYB shocks and 15?-60s.------------------
68 S-code FB GT 4spd(now C6)/3.25 PS PDB
68 J-code(now 289) Cp Sprint"B" C4/3L00-9" PDB PS AC
99 F150 XLT Ext/cab, 4X4, 5.4L, 3L55
95 Exploder XLT with the works! (Wife?s car)
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joe
Gearhead Posts: 517
From: Los Angeles
Registered: Feb 2001
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posted 11-15-2002 10:22 PM
My '67 has one. I have aluminum heads and intake. The intake is supposed to save about 96 pounds, while the heads about 50, give or take.
If it's true, then the engine wouldn't be much heavier than a stock 351. I don't think mine handles bad at all, I can take the corners pretty fast when I want to. The real pain is changing the plugs.
I remember when my engine was stock, it would tend to run hot. Since the rebuild and the addition of an oil cooler, it's been great. 
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67mike
Gearhead Posts: 164
From: Arab,AL
Registered: Mar 2001
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posted 11-15-2002 11:32 PM
Thanks. I go tomorrow to look at a couple hopefully - rain rain rain
Can you run 620 coil spring or need higher rated ones? thanks Mike------------------
'67 coupe, factory R* code (Rust Code)
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