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Author
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Topic: Horsepower figures for a 331
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93Snyper
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Member # 1058
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Anbybody have any ideas for what 331 with a mild cam such as an E303 with performer rpm heads and a gt40 intake would make at the wheels?...and also if i wanted to stay smog legal are my options for a cam limited to an "E" with the same set up? Any feedback would be great.
Posts: 147 | From: FiveTen | Registered: Mar 2002
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PunkINa5.SLOW
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Member # 10
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Well you can use any heads that have an EO number.
As for camshafts I have heard that up to TFS stage 2 cams pass the sniffer.
If you are limited to an E cam then I dont see much HP gain with a 331.
There will be some torque and hp gained, but not much with just an e cam and those heads.
Posts: 2495 | From: MTZ | Registered: Sep 2000
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PunkINa5.SLOW
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Member # 10
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posted
If you are up for suggestions consider this smog legal combo.
306 rebuild with 10 to one TRW pistons
AFR out of the box 165 heads
TFS stage 1 cam
That will run pretty hard
Now that 185 heads have an EO number then I would try a 306 with 10 or as close to 10.5 with TFS stage 2 cam.
Of course this will be borderline for smog but it would pass the sniffer
Posts: 2495 | From: MTZ | Registered: Sep 2000
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JoeT
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Member # 298
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331 at say 9:1 with edelbrock heads, e-cam, and GT-40 intake would probably only make ~300 to the wheels. It could be a little lower.
Dan's combo sounds better. Course a 331 will have about a 10% power potential greater than a 302/6. It's all in the combo.
302 might be happy with AFR 165's, but the 331 would probably be better with 185s, possibly even 205s.
Posts: 6785 | From: San Jose | Registered: Jun 2001
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PunkINa5.SLOW
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Member # 10
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yeah Id say 10-12% more power out of a 331 with the right heads/cam.
If you go to AFR website they have 306s DYNO at 420-440 that are pretty mild.
Posts: 2495 | From: MTZ | Registered: Sep 2000
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93Snyper
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Member # 1058
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posted
So if the TFS stage 2 will pass the sniffer, how much hp will I gain ungrading over the E...I believe that the stage 2 is 222 int. and 232 exh.? Also would there be much of a problem using nitrous on a high com. engine with the right tune? Thanx
Posts: 147 | From: FiveTen | Registered: Mar 2002
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PunkINa5.SLOW
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Member # 10
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Nitrous loves compression and it loves duration at .050.
It is hard to say how much hp you can gain using that cam versus another cam etc etc.
Im sure there is 10-15hp to be gained using the TFS stage 2 cam over the Stage 1 cam, in the correct application.
Heck AFR motors are seeing 30hp gain from going to a bigger header primary tube (1 5/8 to 1 3/4) so it is hard to say could be more.
Dunno.
Posts: 2495 | From: MTZ | Registered: Sep 2000
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PunkINa5.SLOW
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Member # 10
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posted
A good case in point would be FMS old crate motors with aluminum heads. One puts out like 5hp more than the other going from an E to a B cam if I remember correctly.
Posts: 2495 | From: MTZ | Registered: Sep 2000
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93Snyper
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Member # 1058
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I was actually thinking about changing the cam i have in my car...would u guys have any idea of where i should get this done at i know that apex does excelent work but i just wanna talk to a few different folks...also whats the going rate on cam swap?
Posts: 147 | From: FiveTen | Registered: Mar 2002
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JoeT
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Member # 298
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posted
.
[ May 06, 2002, 09:49 AM: Message edited by: shade-tree ]
Posts: 6785 | From: San Jose | Registered: Jun 2001
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JoeT
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Member # 298
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posted
pick up the tool from anderson ford motorsports that allows you to swap a cam without pulling the intake off.
that way, all you have to do is pull the front cover off and use the 'magnet' things to hold the lifters up.
shouldn't take more than 2-3 hours the first time you do it.
APEX/Mustang Ranch would probably charge $500 to do it, not including the price of the cam.
Posts: 6785 | From: San Jose | Registered: Jun 2001
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Stimson
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Member # 51
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posted
What intake are you going with? TheBrain made about 315 rwhp if I remember right with a 331, AFR 165's, TFS stage 2 cam and a GT40 intake. AFR 185's and a holley intake will make even more power.
Posts: 2373 | Registered: Jun 2000
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PunkINa5.SLOW
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Member # 10
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posted
quote:
Originally posted by 93Snyper:
I was actually thinking about changing the cam i have in my car...would u guys have any idea of where i should get this done at i know that apex does excelent work but i just wanna talk to a few different folks...also whats the going rate on cam swap?
I charge 300 for a cam swap, you provide the cam and new timing chain/gear if you want that too.
Posts: 2495 | From: MTZ | Registered: Sep 2000
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93Snyper
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Member # 1058
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posted
Yea the holley and the 185, now thats a great combo...has anybody heard of an X or an F passing smog?...Sounds like deal for a cam swap...do you use that tool that uses the "magnet"?
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Positive Energy Activates Constant Elevation
Posts: 147 | From: FiveTen | Registered: Mar 2002
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PunkINa5.SLOW
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Member # 10
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posted
F cam passed smog in one of my cars b fo
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OUTTA THA DRAMA
R.I.P. MIKE STARKEY MY BABY BROTHER
12/8/77-5/17/03
Posts: 2495 | From: MTZ | Registered: Sep 2000
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cobraman_1994
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Member # 467
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posted
quote:
Originally posted by PunkINa5.SLOW:
F cam passed smog in one of my cars b fo
good, i just ordered mine ![[Big Grin]](biggrin.gif)
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86 GT
Posts: 4882 | From: eldorado hills | Registered: Sep 2001
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AaronC
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Member # 86
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posted
IMO the X cam would be better than the TFS #2 cam. It shares the same intake lobe but will have a smaller exhaust lobe for less exhaust overlap. That should help smog even more. Probably would gain more power too in an NA application.
Posts: 776 | From: woodland | Registered: Dec 2000
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v8302stangs
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Member # 530
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posted
Hey Cobraman 94 - have you lowered your car at all? I just picked up some cobra r rims and they should be on real soon, was trying to figure out if there will be any clearance problems - I have a 95
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1995 GT 5.0
Mac Off-Road H pipe
00' Cobra R wheels
2 Chamber Flowmasters
3 MTX 10" subs
Posts: 137 | Registered: Nov 2001
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cobraman_1994
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Member # 467
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i havnt lowered my car... yet ![[Wink]](wink.gif) i will soon. did you get 17's or 18's. i still have the stock cobras on there, but ill have the 18's on soon ![[Razz]](tongue.gif)
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86 GT
Posts: 4882 | From: eldorado hills | Registered: Sep 2001
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TheBrain
I'm the Real
John Force
Member # 35
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posted
quote:
Originally posted by st5150:
What intake are you going with? TheBrain made about 315 rwhp if I remember right with a 331, AFR 165's, TFS stage 2 cam and a GT40 intake. AFR 185's and a holley intake will make even more power.
Keep in mind that the 315 RWHP was with a "custom" chip from Terry @ Mustang Ranch ![[Mad]](mad.gif)
The car has run a best of 12.36 @ 110 mph WITHOUT the chip but only 13.27 @ 103 mph with the POS chip.
The car weighed just shy of 3600 lbs on both runs so I am positive that there are around 350 -355 @ the rear wheels.
FWIW,
My car passes the "sniffer" w/TFS stage 2 cam without ANY problems
Good Luck
Brian
Posts: 1264 | From: Back in Redding CA | Registered: Jul 2000
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Stimson
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Member # 51
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posted
quote:
Originally posted by TheBrain:
The car weighed just shy of 3600 lbs on both runs so I am positive that there are around 350 -355 @ the rear wheels.
[/QB]
I know. Everyone was impressed at with the numbers your heavy LX put up using that 331 bottem end. with box stock 302 parts above it.
Posts: 2373 | Registered: Jun 2000
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PunkINa5.SLOW
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Member # 10
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posted
quote:
Originally posted by AaronC:
IMO the X cam would be better than the TFS #2 cam. It shares the same intake lobe but will have a smaller exhaust lobe for less exhaust overlap. That should help smog even more. Probably would gain more power too in an NA application.
I argree for smog but I dont like same lift on exhaust sas on the intake i like to see more lift/duration on the exhaust side on SB dorfs
Posts: 2495 | From: MTZ | Registered: Sep 2000
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93Snyper
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Member # 1058
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posted
Ok, here's a big question concerning the clearance with the lift of the cam-.542/.563...Can i run it with 1.7's? ![[Confused]](confused.gif)
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Positive Energy Activates Constant Elevation
Posts: 147 | From: FiveTen | Registered: Mar 2002
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Stimson
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Member # 51
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posted
quote:
Originally posted by 93Snyper:
Anbybody have any ideas for what 331 with a mild cam such as an E303 with performer rpm heads and a gt40 intake would make at the wheels?...and also if i wanted to stay smog legal are my options for a cam limited to an "E" with the same set up? Any feedback would be great.
Sorry, I read your post more closely. That virtual combo you listed would pretty much be a "joke". It'll give stroker 5.O's a bad name with the numbers it'll put up. Since you're going to be running non stock pistons, why not get aftermarket ones with reliefs that will clear what ever cam you want to run? Look at TheBrains combo and spruce it up a bit, here is a cookie cutter smog-able combo: 331+AFR 185's + tfs stage 2 cam + tfs track heat intake. If you're not going to add a power adder, why not go with a 347?
Posts: 2373 | Registered: Jun 2000
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93Snyper
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Member # 1058
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posted
quote:
Originally posted by TheBrain:
quote:
Originally posted by st5150:
[qb]What intake are you going with? TheBrain made about 315 rwhp if I remember right with a 331, AFR 165's, TFS stage 2 cam and a GT40 intake. AFR 185's and a holley intake will make even more power.
Keep in mind that the 315 RWHP was with a "custom" chip from Terry @ Mustang Ranch
The car has run a best of 12.36 @ 110 mph WITHOUT the chip but only 13.27 @ 103 mph with the POS chip.
The car weighed just shy of 3600 lbs on both runs so I am positive that there are around 350 -355 @ the rear wheels.
Possible faulty chip...happened to me once, car ran like crap so i went back an got a new chip, come to find out there was a problem with the internals of the chip...what kind of chip and was Byron there?
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Positive Energy Activates Constant Elevation
Posts: 147 | From: FiveTen | Registered: Mar 2002
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