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stock block or built block?

 
Old 01-07-2019, 07:54 AM
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Default stock block or built block?

After 3 years my stock long block finally dropped a valve. It was eminent as I was running 29psi on a 6466. I am not sure if I should just get a built long block or get a stock block with a built head? I want to test out the limits of the short block since the limit for the long block was reached. how long has your stock block lasted at over 650-700WHP? the most power I would want out of this platform is mid 700s.

If I go built its going to be inline pro but I dont know if it will be worth the $ considering my power goals.


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Old 01-07-2019, 11:00 AM
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I think you will get mixed answers. If my motor was already in pieces Id build it. if I had a healthy motor sitting in the car I would run that with less boost.
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Old 01-07-2019, 05:37 PM
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If you have the cash, then IP short block for sure. Either take a chance with used or start out fresh knowing that your short block is built with the good stuff.
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Old 01-07-2019, 10:51 PM
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My stock block f20c is still running great at 135,000 miles and it is now dynoed at 588whp with a gtx3075r. But I use to run a gtx35r and it was at 640whp for quite some time. It’s been turboed since about 75k miles. my head is built though

i personally think anything south of 700whp a stock block will be the most reliable.
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Old 01-08-2019, 07:07 AM
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Originally Posted by riceball777 View Post
My stock block f20c is still running great at 135,000 miles and it is now dynoed at 588whp with a gtx3075r. But I use to run a gtx35r and it was at 640whp for quite some time. It’s been turboed since about 75k miles. my head is built though

i personally think anything south of 700whp a stock block will be the most reliable.
Stock transmission the whole time?

I wanna upgrade to e85 and SOS dual but I also don’t want a car that’s constantly broken. If I only do 3rd gear - 5th gear hits, I wonder if I can make it last a while.
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Old 01-08-2019, 08:32 AM
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I upgraded to a dogbox. my stock trans held up well with the racersteve treatment.
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Old 01-08-2019, 02:18 PM
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Originally Posted by kumar75150 View Post

Stock transmission the whole time?

I wanna upgrade to e85 and SOS dual but I also don’t want a car that’s constantly broken. If I only do 3rd gear - 5th gear hits, I wonder if I can make it last a while.
i,m still on my stock 135k transmission. It still shift perfectly fine. but I'm on the 3rd diff. I blew the stock diff then i got a comptech reinforced diff. That lasted a few years till it blow up. i now have a puddymod stage 3 diff with 3.9 final drive.
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Old 01-09-2019, 06:46 AM
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you must baby it to have it last that long. i shift mine like i stole it. lol
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Old 01-09-2019, 09:51 AM
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Id say 650 or below, pretty reliable long as you take care of the motor, And you keep the torque down AKA safe timing (Oil changes, not hot lapping, regular maintenance)

over that 650-7 mark, your bearings are gonna suffer, due to the tight OEM clearances, and flexing of the crank.
I ran my car on 28-32lbs on teh 62 easily making 7+ and ran like that all summer, than decided to throw the 72 on and crank to 30lbs, probably north of 800 and lasted a night before mains went.

Its just too much stress for stock oil clearances.
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Old 01-13-2019, 04:50 PM
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Majority of the time the care will be around the 500whp mark. I would only turn it up if I have to.
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