Horse 🔋 power - Chevy Impala SS Forum
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post #1 of 30 (permalink) Old 11-20-2018, 04:17 PM Thread Starter
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Horse 🔋 power

How do I increase horse power...I put a k&n intake on it....thinking about. Chip tune...is pcm for less a good choice...94 caprice...
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post #2 of 30 (permalink) Old 11-20-2018, 10:10 PM
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We don't have "chips." You have a PCM. There are many threads about increasing horsepower here. Installing a K & N CAI isn't necessarily going to gain much if any. Get your wallet out and start at the back, Catback, gears, correct headers, PCM tune. Spend some time reading the threads. Before you start, make sure everything is in good condition stock. Plugs, wires, properly functioning Opti vent harness, wiring and grounds good. Good luck.
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Jim B.

'95 9c1, pcmperformance.com 93 tune, Dynomax Ultraflo catback, K & N box filter, LT4 KM, 160 stat, 3.08 Posi.
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post #3 of 30 (permalink) Old 11-20-2018, 10:32 PM
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I would say along with the filter to do a TB airfoil, and aluminum elbow. That is simple stuff. From there progress to headers and gears which are more costly. After the headers and or gears get a tune. I suggest Solomon.


Neil P.
1996 Federal hearse. CAI, Delphi 3.5 MAF, Aluminum elbow, airfoil, coolant bypass mod, 36lbs injectors, LE 223/231 110 LSA cam, Trickflow pushrods, Comp Cams rocker studs, Lunati 1.6 roller rockers,double spring kit and lifters, F-body heads, Cometic MLS .027 head gasket, Hooker headers, Cloyes timing chain, PowerBond balancer, EGR, air pump and AC delete. Solomon tune. CPT Pro-Race trans, 9.5 inch 3200 stall converter, 9.5 inch 14 bolt rear, 4.10 gear and TruTrac helix gear diff
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post #4 of 30 (permalink) Old 11-20-2018, 10:43 PM
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Airfoils and aluminum elbows are simple and also ineffective. Do not do headers without first doing the Catback. There are very good reliable posts from people who have been here a long time and have proven results. There is no cheap route to more power with these cars. The best way to start is get your car into excellent stock shape. That is worth some power in itself. Take advice from those guys.
If you have had all those ball joint failures, you already have some work to do before you worry about more power.

Jim B.

'95 9c1, pcmperformance.com 93 tune, Dynomax Ultraflo catback, K & N box filter, LT4 KM, 160 stat, 3.08 Posi.
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post #5 of 30 (permalink) Old 11-20-2018, 10:51 PM
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Quote:
Originally Posted by fbi9c1 View Post
Airfoils and aluminum elbows are simple and also ineffective. Do not do headers without first doing the Catback. There are very good reliable posts from people who have been here a long time and have proven results. There is no cheap route to more power with these cars. The best way to start is get your car into excellent stock shape. That is worth some power in itself. Take advice from those guys.
If you have had all those ball joint failures, you already have some work to do before you worry about more power.



I doubt they are ineffective. They may not make big gains but cleaning up the airflow before the intake is never a bad idea. If you can't get the airflow in smoothly you can't get it out. One thing builds on another. Take this from someone that knows something about aero and fluid dynamics.


Neil P.
1996 Federal hearse. CAI, Delphi 3.5 MAF, Aluminum elbow, airfoil, coolant bypass mod, 36lbs injectors, LE 223/231 110 LSA cam, Trickflow pushrods, Comp Cams rocker studs, Lunati 1.6 roller rockers,double spring kit and lifters, F-body heads, Cometic MLS .027 head gasket, Hooker headers, Cloyes timing chain, PowerBond balancer, EGR, air pump and AC delete. Solomon tune. CPT Pro-Race trans, 9.5 inch 3200 stall converter, 9.5 inch 14 bolt rear, 4.10 gear and TruTrac helix gear diff
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post #6 of 30 (permalink) Old 11-21-2018, 09:23 AM
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For their cost, the aluminum elbow and airfoil are incredibly ineffective. The $125 that would be spent on those two items could be better spent towards something else.

Mike - '94 BBB SS (RIP 06/16) - '95 DGGM SS - '96 DCM SS - '92 BBB Wagon
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post #7 of 30 (permalink) Old 11-21-2018, 10:41 PM
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Quote:
Originally Posted by threeimpalas View Post
For their cost, the aluminum elbow and airfoil are incredibly ineffective. The $125 that would be spent on those two items could be better spent towards something else.



Please explain how they are ineffective? And if you are paying $125 you are out of your mind.



https://www.ebay.com/itm/LT1-LT4-Alu...6138:rk:1:pf:0


Smoothing out the airflow is never a bad thing. Take a look inside a stock rubber Elbow and see all the cavities that disturb airfow at a critical point right before the TB. My car with CAI(filter,straight tube, aluminum elbow, airfoil, coolant bypass mod) headers and a tune made 295hp at the wheels with a header gasket leak. Which mean over 300hp if not for the leak. Now stock should be 210-225 at the wheel. Soare you going to try and tell me headers and a tune got me 75+hp alone and that the CAI intake did nothing? And that the elbow and airfoil are ineffective? Whatever that means.


Neil P.
1996 Federal hearse. CAI, Delphi 3.5 MAF, Aluminum elbow, airfoil, coolant bypass mod, 36lbs injectors, LE 223/231 110 LSA cam, Trickflow pushrods, Comp Cams rocker studs, Lunati 1.6 roller rockers,double spring kit and lifters, F-body heads, Cometic MLS .027 head gasket, Hooker headers, Cloyes timing chain, PowerBond balancer, EGR, air pump and AC delete. Solomon tune. CPT Pro-Race trans, 9.5 inch 3200 stall converter, 9.5 inch 14 bolt rear, 4.10 gear and TruTrac helix gear diff
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post #8 of 30 (permalink) Old 11-22-2018, 05:32 AM
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Stock LT1's are good for 240-255 RWHP (A4).

Airfoil has been dyno proven to give you 0-2 horsepower.

Otherwise stock LT1: CAI is good for about 10 horsepower.

Most of your gain was from the tune and the headers. The stock manifolds in particular were very restrictive and there's a lot of corked-up power in the PCM.

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Originally Posted by The Stickman View Post
Soare you going to try and tell me (SNIP) that the elbow and airfoil are ineffective?


1995 Caprice ERE 383, CIA long tubes, Dynomax VT's, RAISS, Kore3/Z06 brakes, 3.42 posi, Boss 338 20's, 12 way seats, Impala SS console, etc etc etc
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post #9 of 30 (permalink) Old 11-22-2018, 05:37 AM
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Quote:
Originally Posted by [email protected] View Post
How do I increase horse power...I put a k&n intake on it....thinking about. Chip tune...is pcm for less a good choice...94 caprice...
Yesterday, three hours before you posted this, I suggested to you that you use the search function because this topic - PCM4L in particular - has a lot of threads here. You appear to have ignored that advice. I would encourage you to reconsider.

Here is how you do it:


1995 Caprice ERE 383, CIA long tubes, Dynomax VT's, RAISS, Kore3/Z06 brakes, 3.42 posi, Boss 338 20's, 12 way seats, Impala SS console, etc etc etc

Last edited by atlantadan; 11-22-2018 at 06:00 AM.
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post #10 of 30 (permalink) Old 11-22-2018, 06:40 AM
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Quote:
Originally Posted by atlantadan View Post
Stock LT1's are good for 240-255 RWHP (A4).

Airfoil has been dyno proven to give you 0-2 horsepower.

Otherwise stock LT1: CAI is good for about 10 horsepower.

Most of your gain was from the tune and the headers. The stock manifolds in particular were very restrictive and there's a lot of corked-up power in the PCM.



You aren't actually trying to say you only lose 5-20 hp through driveline lose are you? Most everyone agrees it is 14-20%. The stock B-D body cars were stock at 260hp at the crank. And that is a New engine not one with over 100K miles like mine. Your figures really are suspect. First you said those parts were $125 which is twice what they cost. And if they make any hp they are not ineffective. No one ever said they made tons of hp. But any and all helps. Also with a tune they do take it into consideration so it makes a difference. And if it didn't matter then why do aftermarket TB's have airfoils built in? And I might add that while it might not make much difference on a stock engine that as you add hp the benefits add up. The more air the engine injests the more it should help. And as far as the elbow how many racers do you see running a stock rubber elbow?


Neil P.
1996 Federal hearse. CAI, Delphi 3.5 MAF, Aluminum elbow, airfoil, coolant bypass mod, 36lbs injectors, LE 223/231 110 LSA cam, Trickflow pushrods, Comp Cams rocker studs, Lunati 1.6 roller rockers,double spring kit and lifters, F-body heads, Cometic MLS .027 head gasket, Hooker headers, Cloyes timing chain, PowerBond balancer, EGR, air pump and AC delete. Solomon tune. CPT Pro-Race trans, 9.5 inch 3200 stall converter, 9.5 inch 14 bolt rear, 4.10 gear and TruTrac helix gear diff
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