Need help on rebuilding my l31 into a 383

Bigredburb47 · Oct 30, 2017

I’m guessing I would have to upgrade my rockers for the zz4 or not?

Bigredburb47 · Nov 2, 2017

Okay so my build took a different turn hence the machine/engine shop wanted to charge 5k to turn my motor into a 383 and gave a long story about I had to change my heads and told him that is horse ****. So I decided to save a little more money and just buy the crate ht383

Chewy1576 · Nov 2, 2017

If you're looking at crate motors, Blueprint Engines puts together a pretty good 383 for less than a HT383. My TBI replacement 383 isn't wild by any means, but still puts out 280 HP / 400 TQ.

jasons99hoe · Nov 2, 2017

Chewy1576 said:
If you're looking at crate motors, Blueprint Engines puts together a pretty good 383 for less than a HT383. My TBI replacement 383 isn't wild by any means, but still puts out 280 HP / 400 TQ.

yes i would go with the blueprint engines crate motor.

Bigredburb47 · Nov 7, 2017

jasons99hoe said:
yes i would go with the blueprint engines crate motor.

I still wanted to remain a Vortec engine tho

drenolov · Nov 20, 2017

Bigredburb47 said:
I still wanted to remain a Vortec engine tho

Hello I have a fresh 383 dished and forged with Comp cams 8-300-8 cam what can I do to get to 450hp I have a proflo xt intake and marine intake not installed all stock at the moment

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drenolov · Nov 20, 2017

drenolov said:
Hello I have a fresh 383 dished and forged with Comp cams 8-300-8 cam what can I do to get to 450hp I have a proflo xt intake and marine intake not installed all stock at the moment

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O yea and 411 swaped

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jasons99hoe · Nov 21, 2017

drenolov said:
O yea and 411 swaped

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i need that pin out sheet. lextech doesent respond

jasons99hoe · Nov 21, 2017

Bigredburb47 said:
I still wanted to remain a Vortec engine tho

you could get the specs on the ht-383 motor and have a machine shop do the block and then just build it from there. i believe its a crank from a 400c.i. its hard getting the vortec fuel/intake system to put up good numbers. the motor and heads are great. the ht-383 is the best i have seen but its a steep price tag. if you have a 4l60e you might wanna upgrade that as well because she doesent like that kind of power

drenolov · Nov 21, 2017

jasons99hoe said:
i need that pin out sheet. lextech doesent respond

He's pretty good at getting back to people that p.m him

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Need help on rebuilding my l31 into a 383

Bigredburb47

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