4.8 w/317's
Thread Starter
Joined: Feb 2006
Posts: 356
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From: SoCal-Victorville
4.8 w/317's I'm building a 4.8 turbo for my datsun and I just need to know if 317's will work ok for it, being that the compression will be low(not sure how low). The bottom end will be stock but with ARP rod/mains, LS6 cam/oil pump, LS6 intake manifold. I plan on a .70mm+ turbo, 60lb+ injectors, dual walbro's . My goal is 550whp in a 2500lb car.
They will work but scr will be in The 8s. For that Hp level makes more sense IMO to keep stock heads, and keep the 4.8s 9.4:1 scr. Will support 10+psig on pump gas assuming your fuel and cooling system can handle it, with fmic
Thread Starter
Joined: Feb 2006
Posts: 356
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From: SoCal-Victorville
Thanks ! My uncles are pretty awesome with porting and they'll do do it for free I just have to buy the burr's . Are you using 1 walbro or 2 ? I'll be running 60lbs injectors and maybe a truck intak or ls1/6.
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If you put in 1 Racetronixs pump, you should be fine with Premium gas and 60's.
If you want to go beyond 600 HP, you will want bigger injectors, especially if you want to run E85. The 70mm can get you pretty far in HP.
If you want to go beyond 600 HP, you will want bigger injectors, especially if you want to run E85. The 70mm can get you pretty far in HP.
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Verdad Gallardo Thread Starter
Joined: Feb 2006
Posts: 356
Likes: 3
From: SoCal-Victorville
No, No ! That will be plenty for me for a while ! The car weighs around 2600lb stock. and about 2830lb with me in it(stock). I've removed some stuff on it so I'm guessing around 2600lb with me in it at around 500+whp will be crazy fast for me plus it'll be able to corner too. E85 would be nice if I didn't have to drive so far to get it ! Thanks for the info !
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Would the compression still be too low with a set of 317's on a 5.3? I was thinking I would be around 9 for compression. I am debating if I should just leave the stock 862's on there. I could mill the 317's a little. Is it just too low on a 4.8?
Thread Starter
Joined: Feb 2006
Posts: 356
Likes: 3
From: SoCal-Victorville
