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5.0 and 5.7 Discussion, Optispark?! What the hell?! in Cadillac Engine Technical Discussion; Originally Posted by Stoneage_Caddy so does that mean that the el caminos and mote carlos in the 80s that had ...
  1. #16
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    Re: Optispark?! What the hell?!

    Quote Originally Posted by Stoneage_Caddy View Post
    so does that mean that the el caminos and mote carlos in the 80s that had 4.3 badgeing really had a 4.3 v8 and not the 4.3 v6 ?
    Nope, that's the 262cid 4.3V6, good for 140hp or so. Not the 265cid V8.

  2. #17
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    Re: Optispark?! What the hell?!

    interesting ....well after more reading the 265 has been around off and on since 55 ....

    but why they ran that in the caprice when they had 305s is really odd ...but that gives me yet another possible crankshaft and bore combo to build my modern 302 with

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    Re: Optispark?! What the hell?!

    No, in 1975-76 there was a 262 V8 (not V6!) that was seen only in the Monza. It was a 3.5" bore 3.5" stroke or so. Tiny little thing...

    Ran ok, but wasn't a powerhouse. But in a Monza, was pretty fun!

    This 4300v8 shares more with the originial 265 V8 than any other small block.

    Yes, you can make a 302 LT1 if you want... It has been done actually on the Impala SS forums.

  4. #19
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    Re: Optispark?! What the hell?!

    A 302 LT1? Jesus I bet that thing revs to the moon! What kind of power do they get from them?

  5. #20
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    Re: Optispark?! What the hell?!

    back in the trans am days in the late 60s i think they (302 powerd z28s) were around 600-700hp and were reving above 8k ...back when the displacemnt limit was 302 inches ....chrysler even had a berif run with a 340 based 302 ...then of coarse the 302 stangs .....

    im not sure if AMC was running in trans am dureing the 302 days ...i think when they arrived with penske backing the displacembnt limit was raised to around 350 inches ....

  6. #21
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    Re: Optispark?! What the hell?!

    Gotta admit, would love to see a 95 Z28 with a 302 LT1 spinning to 7000 rpm (limit of LT1 PCM...)

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