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  1. #26

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    Run your measurements though a calculator. Compression will really depend on how far the piston is below the block deck surface. Most are about .005-.010”, but I’ve heard some are closer to zero. A stock bore engine, piston .008” below deck, 58cc heads, -6cc valve relieve pistons and a .037” head gasket will put you at 9.4:1. If the short block is in good condition it will last just fine without a power added at that compression.
    84 LX Vert. 5.0 5speed canyon red on white
    99 cobra, electric green on medium parchment, vortech s-trim

  2. #27
    FEP Power Member richpet's Avatar
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    I got an engine stand from HF for $35. Pretty cheap really. Can always use the 20% coupon that's always available (I did).
    83 5.0 GT. Quicker than it looks! 10:1 (or just over) 306, Motorsport a332 cam, 140A alt, t5 conv, 8.8 w/ 3.27's, Edel rpm, alum rad, very worked e7's, Holley SA carb, etc... SOLD IT!!!!

    Now have a 1981 Granada! Building a 9.5:1 .040 over 302, Edel E-street heads, 268 cam, T5, 8.8 with 3.55, plus all the stiffening goodies, control arms, ...

    "Never underestimate the power of stupid people in large groups"

  3. #28

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    Appreciate all the input. Mileage? It might actually be a 69,000 original mile car (due to 5 digit odometer). It's in tremendous shape. Unfortunately the guy I bought it from didn't have a whole lot of history on it.

  4. #29

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    Thought I would come in here and update this thread. I'm getting close to getting back into this. I ended up selling the GT40 heads I had because I paid too much for them. I sold them for $10 less than I bought them from. Hoping to go to a pick-n-pull and find another pair for close to half the price. Working on a potential partnership to get a freebie or two to shave $40 or so off my shopping list to hopefully fall into budget. I'm getting excited because I almost have done all the piddly stuff that was standing in my way of the fun work. Re-reading through this thread was a good refresher, and I want to thank everyone once again for their help. If you were curious about catching up on my budget build, here's a link to my YouTube playlist - https://www.youtube.com/watch?v=X0w8...bjNanCciDvnkSc (FYI it shows newest episode first).

  5. #30

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    Scored a great deal on heads yesterday at a machine shop. $100 for a 3-bar pair. Basically it's a customer that abandoned direction after he dropped them off at the shop. I'd suggest this as a possibility to everyone out there. Go to your local machine shop and ask that question. Hoping to exchange a promotional video on my YouTube channel for maybe another 15% off of the machine work, we shall see.

  6. #31

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    OK, picked up a new set of heads. They're GT40Ps instead of 3-bars...even though I would have rather had the 3-bars to protect against the header issues, but at $125 I couldn't get too picky with the market. I'm going to now sink my head into more "what headers will work" threads, so I might be gone for awhile!

  7. #32
    FEP Power Member slow84lx's Avatar
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    If you watch the classified adds on the Mustang forums you will find that used or old but never used sets will pop up for sale occasionally. I've picked up 2 sets of Ford Motorsport headers this way and seen many others. Craigslist & Ebay are good places to look also.

  8. #33

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    I'll have to religiously do that. Thanks.

  9. #34
    FEP Power Member mcb82gt's Avatar
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    Ive "heard" the BBK unequal shorties work with 90 degree plug wires. I think that is the route I am going to try. I don't like the individual flange MAC headers, or the price of them.
    Mike

    Now stang-less.

    88 Cougar 5.0

  10. #35

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    yea BBK's are the best I can find at the moment. I did scrounge up some interesting options via Craigslist last night. Thought maybe there was a JBA product too that might work, but haven't settled on a part number to be sure.

  11. #36

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    I picked up a 89 with p heads last week. It has hooker long tubes. Someone cut the mounting flange in between the tubes and used 90 degree boots. It seems to work pretty good.

  12. #37

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    Here's an update on where I'm at - https://youtu.be/pIu6tXZyLEA

    Thought it was in this thread but it was somewhere else because I just re-read it all...but I thought someone had a suggestion for a 1.6/1.7 rocker combo. Couldn't remember if the 1.7s were designated for exhaust side or what. But if I can fit them under the stock valve covers, I'm kind of thinking about doing so. I have stock rockers with the heads, but just figure while I have to deal with those parts anyway, why not upgrade something? Would any of you worry about the combination of stock 1978 flat tappet cam + stock GT40P springs + 1.7 rockers?

  13. #38
    FEP Power Member mcb82gt's Avatar
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    Grant. I plan on using the stock 1.6 rockers, just due to the cost of roller rockers. I will be using the stock HO cam, I'm unsure that the 78 flat cam is like. I suspect milder than the HO, but don't know. I will be using clay to check PTV clearance on mine, as it has the stock flat top pistons. What pistons or engine are you using, Icant remember.
    Mike

    Now stang-less.

    88 Cougar 5.0

  14. #39

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    The motor is staying stock, just swapping heads. I'll see if my Chilton's manual has a stock cam spec in it. I'm guessing it's pretty weak. I think after some searching, there's really nothing to gain with the 1.7s considering all the other things I'm keeping as is.

  15. #40
    FEP Power Member mcb82gt's Avatar
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    When you pull your stock heads off, then you will be able to see if your pistons have valve reliefs or not.

    Are you sure you don't want to stick a stock HO cam in there?
    Mike

    Now stang-less.

    88 Cougar 5.0

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