500rwhp NA thread #2.
Registered User
Joined: Mar 2001
Posts: 375
From: Glen Burnie, MD
500rwhp is my goal also. i think the key is awesome low/mid lift heads(afr w/big valves), awesome exhaust #'s!, longer runner intake with matched runner angles (sheetmetal). mid duration high lift cam. liteweight liteweight liteweight.... upgraded ignition coil packs or custom rear dist. an upgraded ecm is a big + but not required. oh and HEADERS! more performance gained 40rwhp from there $2900 race headers that you could have made w/ hookers by good custom exhaust guy for about $300-400
joe overton put together a stock bottom end combo that dynoed 457rwhp on a dynojet (afr 195 heads, ported lt4 intake, lite valvetrain and custom cam) from what jimlab and more performance have told me i think there is 50hp to be made from a sheetmetal intake. and there you go 500rwhp.
also "the opti is a big weak point" comparing lt1-ls1
oh and im on my way to makeing 420rwhp 400rwtq with box cnc afr195's, shelf cam..
joe overton put together a stock bottom end combo that dynoed 457rwhp on a dynojet (afr 195 heads, ported lt4 intake, lite valvetrain and custom cam) from what jimlab and more performance have told me i think there is 50hp to be made from a sheetmetal intake. and there you go 500rwhp.
also "the opti is a big weak point" comparing lt1-ls1
oh and im on my way to makeing 420rwhp 400rwtq with box cnc afr195's, shelf cam..
Registered User
Joined: Dec 1969
Posts: 1,431
From: Pacific North West
I am hoping to get the rest of my parts together.
If I do we are shooting for 525-550RWHP with a stock PCM.
Brodix heads, Hogins intake and 383 are on the menu. Not sure how it will take the fogger after that.
I can think of two that are not posting here shooting on the order of 600+RWHP here in Washington state. I know one of them has heads on the order of 360 Intake with a fairly low volume on his 396LT1. The block is rocked and he is going to shoot a 300 shoot into it.
The other one is runing a "Thumper"
There are some nasty cars hanging around here. Not all of them want people to know
I just hope to finish mine after getting married and buying a house LOL
If I do we are shooting for 525-550RWHP with a stock PCM.
Brodix heads, Hogins intake and 383 are on the menu. Not sure how it will take the fogger after that.
I can think of two that are not posting here shooting on the order of 600+RWHP here in Washington state. I know one of them has heads on the order of 360 Intake with a fairly low volume on his 396LT1. The block is rocked and he is going to shoot a 300 shoot into it.
The other one is runing a "Thumper"
There are some nasty cars hanging around here. Not all of them want people to know
I just hope to finish mine after getting married and buying a house LOL
Registered User
Joined: May 2000
Posts: 799
From: Redmond, WA
Originally posted by OneFlyn95z28
I can think of two that are not posting here shooting on the order of 600+RWHP here in Washington state. I know one of them has heads on the order of 360 Intake with a fairly low volume on his 396LT1.
I can think of two that are not posting here shooting on the order of 600+RWHP here in Washington state. I know one of them has heads on the order of 360 Intake with a fairly low volume on his 396LT1.
BTW, here's a view down the "business end" of my Hogan's intake...
http://www.rx7club.com/attachment.php?s=&postid=2271197
http://www.rx7club.com/attachment.php?s=&postid=2271226
http://www.rx7club.com/attachment.php?s=&postid=2271239
My 215cc raised runner heads flow in the mid 330s, and Brian (B&B Performance) said that with the ignition problem resolved (see dyno sheet below), the engine is in the 660-670 range as-is, and he estimated 680-700 after tuning, based on what they saw on the dyno and the richness of the fuel map on those pulls.
Dyno sheet... the Opti-spark was to blame for the big dips in power.
http://www.rx7club.com/forum/attachm...postid=2206653
I'm assuming that 570+ RWHP is not going to be a problem.
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