402 for a v-drive?
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402 for a v-drive?

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    Member hondo339's Avatar
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    Default 402 for a v-drive?

    i',ve got a Chevy 402 short block out of a 71 truck. 2 bolt mains, steel crank. I'm thinking of throwing a set of 990 heads (once i find a decent set) on it and trying to make roughly 500 or so horses. i figure if i keep it under 6500 rpm's it'll stay together. does anyone have any info or advice on this?
    maybe something i should know before i attempt to run this block.
    any info would be appreciated.
    it's going in a first run XH511. 12 degree Casale with 15 gears.
    thanks.

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    I'm famous ! Lucky's Avatar
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    Quote Originally Posted by hondo339 View Post
    i',ve got a Chevy 402 short block out of a 71 truck. 2 bolt mains, steel crank. I'm thinking of throwing a set of 990 heads (once i find a decent set) on it and trying to make roughly 500 or so horses. i figure if i keep it under 6500 rpm's it'll stay together. does anyone have any info or advice on this?
    maybe something i should know before i attempt to run this block.
    any info would be appreciated.
    it's going in a first run XH511. 12 degree Casale with 15 gears.
    thanks.
    396/402 are fine in a boat - cruising rivers and a little jet boat action . build it with a blower and a set of ls6 rods a steel crank and a decent valve train and you will have years of fun .

    Do take the time to go threw the oiling system . I think early blocks had the groved rear cam bearing - this can be a issue !
    " my carbon footprint is gonna kick your green ass"


    Quote Originally Posted by 396_Ways_To_Spit View Post
    WOWO!!!!! THat has to be the most beautiful crank that Ive ever seen!!!!!!!!!!!!!!!!


    Quote Originally Posted by MAXIMUS View Post
    He has been allowing me to park my equipment in his backyard for a few years now...
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    steelcomp was here
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    Quote Originally Posted by hondo339 View Post
    i',ve got a Chevy 402 short block out of a 71 truck. 2 bolt mains, steel crank. I'm thinking of throwing a set of 990 heads (once i find a decent set) on it and trying to make roughly 500 or so horses. i figure if i keep it under 6500 rpm's it'll stay together. does anyone have any info or advice on this?
    maybe something i should know before i attempt to run this block.
    any info would be appreciated.
    it's going in a first run XH511. 12 degree Casale with 15 gears.
    thanks.
    Before you spend $$ on a set of 990's, you might want to look at these. The 990's will make that 402 pretty lazy under 6500.

    http://www.performanceboats.com//showthread.php?t=20842
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Lucky View Post

    Do take the time to go threw the oiling system . I think early blocks had the groved rear cam bearing - this can be a issue !
    That is correct, on a 65, maybe 66 block, but the 1971 factory 402 should be fine.

    I have a nice set of 990's for sale, but agree that you are probably better off with 049's.

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    65-66 blocks require a groove in the rear cam journal!.. The 049's are the way to go with this project!...

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    steelcomp was here
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    Quote Originally Posted by obnoxious001 View Post
    That is correct, on a 65, maybe 66 block, but the 1971 factory 402 should be fine.

    I have a nice set of 990's for sale, but agree that you are probably better off with 049's.
    Dang it... Sorry Barry...didn't mean to step on toes...
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    Member hondo339's Avatar
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    well what i f i was running say 12.5 to 1 comp. a big solid cam and a tunnel ram with two 750's?

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by steelcomp View Post
    Dang it... Sorry Barry...didn't mean to step on toes...
    You didn't in the least Scott, I was giving him a push towards a set of yours actually.

    Quote Originally Posted by hondo339 View Post
    well what i f i was running say 12.5 to 1 comp. a big solid cam and a tunnel ram with two 750's?
    If you are going to try and turn higher rpms,, as previously stated, perhaps over 6500 the larger heads might work a little better.

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    Quote Originally Posted by hondo339 View Post
    well what i f i was running say 12.5 to 1 comp. a big solid cam and a tunnel ram with two 750's?
    it will be fine - just buy race gas . and rev the piss out of it , When it gets mad at you . YOU will know it
    " my carbon footprint is gonna kick your green ass"


    Quote Originally Posted by 396_Ways_To_Spit View Post
    WOWO!!!!! THat has to be the most beautiful crank that Ive ever seen!!!!!!!!!!!!!!!!


    Quote Originally Posted by MAXIMUS View Post
    He has been allowing me to park my equipment in his backyard for a few years now...
    [/SIGPIC]

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