LT1 383 Stroker HP Question!!!!!!!
Thread Starter
Teching In
Joined: Feb 2015
Posts: 6
Likes: 0
Ur moms a troll. I have a 98 that was originally a V6 than i found a cheap lt1 and trans for $400 i rebuilt and dropped it in. Half you guys have never even rebuilt an engine or done a build yourself. It was a 355 before makeing about 360 to the wheels. Now im makeing it a 383. I simply asked what kind of hp i might be looking at with a 383. Now you key bored monkeys that stay on these forums like **** come and talk all this **** for no reason keep your comments to youself if your just gonna talk ****. Thanks for all your replies.
Thread Starter
Teching In
Joined: Feb 2015
Posts: 6
Likes: 0
Lol you people crack me up who has the time to wright a whole book just to reply to a post lmao and nothing but talking **** for no reason thats how you know you have no life and you sit on here looking for people to talk **** about and hate on.
TECH Apprentice
Joined: Oct 2014
Posts: 369
Likes: 3
From: Murica
Ur moms a troll. I have a 98 that was originally a V6 than i found a cheap lt1 and trans for $400 i rebuilt and dropped it in. Half you guys have never even rebuilt an engine or done a build yourself. It was a 355 before makeing about 360 to the wheels. Now im makeing it a 383. I simply asked what kind of hp i might be looking at with a 383. Now you key bored monkeys that stay on these forums like **** come and talk all this **** for no reason keep your comments to youself if your just gonna talk ****. Thanks for all your replies.
TECH Addict
Joined: Dec 2010
Posts: 2,610
Likes: 4
From: Maricopa, AZ
OP, stop being *** hurt. You provided little information. The difference between a 300HP 383 and a 500HP 383 is in the details. Cam specs as typically given (xxx/xxx duration, xxx/xxx lift, xxx LSA) are better than what you provided, and those are actually not very detailed either. Head flow DOES matter and that is tied to BRAND. Cross section vs flow isn't linear, and it's even less so in complex shapes like intake and exhaust ports.
How much horsepower? If your last 355 (of which you provided NO details of, which is important) is what you started with to make your 383, and you stepped up the cam, increase CR and tightened quench, plus had a decent tune done, if you did it RIGHT and it doesn't ping, I'll guess right around 400rwhp. That extra stroke is worth about 20-30hp (BMEP for a 355 at 360rwhp is roughly 10.6 bar, throw in the added stroke and the BMEP -assuming nothing else changes and the engine likes it- increases about 7% so about 11.342 bar or 382 rwhp, a 22hp jump). But there's more to it than static SCR's vs stroke vs HP. You have velocities and flow plus DCR, so done right you could gain 30rwhp with the same cam and heads: IF your cam and heads are good with the SCR/DCR of a 383 build.
Last edited by hrcslam; Jun 21, 2015 at 01:22 PM.
Hey guys I have a 383 with 2 bananas and its $3 a bushel of hammers on eBay, how many vacuums can a turtle use if it has wings? GT5honey.
Take it to the track and tell us what it traps or strap it to a dyno instead of looking for participation trophies and pats on the back. You didn't give any real information, yet you say we don't know as much as you.
Take it to the track and tell us what it traps or strap it to a dyno instead of looking for participation trophies and pats on the back. You didn't give any real information, yet you say we don't know as much as you.
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