Afr 180cc vs 195cc
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
There is more to it than port size; here is an article for your reading pleasure on the AFR Eliminator Heads.
http://airflowresearch.com/articles/article113/A-P1.htm
http://airflowresearch.com/articles/article113/A-P1.htm
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Anything spent on comp ports (beyond that) would be throwing money out the window.
Even if he considered another (short-runner) intake down the road, the 195 (w/o comp ports) is still be best choice. If he want's to build a high-rpm, big stroker, then it would be time to consider starting over with a clean sheet build.
With any luck, that TPI intake (of Eduardos) will have been extrude honed to flow more air.
Last edited by GREGGPENN; Aug 3, 2013 at 02:19 PM.
Safety Car
Joined: Feb 1999
Posts: 4,724
Likes: 16
From: Little Elm TX
I agree with Greg on that..... comp ports for a TPI motor is just spending money for little to no return.(You might find yourself with another 5 HP.... but even that might be a stretch in my opinion)
Now, get rid of that TPI and let the motor spin to 6000+ rpm.... and I would recommend it if you're et hunting for that last tenth.
Now, get rid of that TPI and let the motor spin to 6000+ rpm.... and I would recommend it if you're et hunting for that last tenth.
Safety Car
Joined: Feb 1999
Posts: 4,724
Likes: 16
From: Little Elm TX
Please help me to choose properly the heads size
1991 L98 automatic 2.59 rear end
I already bought some parts
Mods
Trans and rear end
1.-2200 stall converter (bought it, not installed)
2.- 3.07 rear end (bought it, not installed)
3.- transgo (bought it, not installed) and oil cooler
4.- beam plates (bought it, not installed)
5.- speedo gears, red,green 92 sensor for 3.07 (bought it, not installed)
6- nitto treadwear 100 installed
engine
1.- Long tube headers installed
2.- no cats, doublé 2 1/4 exhaust to borla mufflers installed
3.- 3 wire heated 02sensor installed
4.- 1.6 rr self align installed
5.- stock 48mm throttlebody
6.- edelbrock ported base manifold AND slp siamese ported runners(bought it, not installed)
[/URL]
7.- lt4 springs (bought it, not installed), afr springs I supose are better option for 268 xfi cam
8.- 30 lb injectors (bought it, not installed), I red that 24 is enough but pcmforless suggested 30lb
9.- walbro 255 fuel pump (bought it, not installed)
10.- k&n,cutted airlid,adjustable fuel pressure regulator installed
11.- msd 6al installed
12.- moates apu1 for fine tuning installed
13.-pcmforless chip not boughted until buy cam (baseline)
14.- egr, frisbie,airpump deleted
brakes
15.- c5 front discs, calipers, zr1 booster, hawk racing pads,stainless hoses
I wanted 180cc afr heads and 268xfi cam
the Price between 180cc and 195cc is the same, I know that I will need to reduce combustión chambers.
what is your advice about the size of heads ?
I dont use this car as daily driver and I dont use it as drag car (maybe 3 times a year), I use it for fun and ocasionally trips
difference in torque and hp ?
bigger body throttle is needed ? 52mm I guess, not 58mm
edelbrock base is heavily ported to work with 195cc heads probably reach 5500 rpm with thsi intake
I dont have the camshaft then I can buy another model if is better for this setup
i have the car since new, only have 50,000 miles, the engine is running strong, I dont plan to stroke it to 383 then if leave 350cid the 180cc is better option ?, I red that 195cc Works great on 350 and you have opportunity to grow later but this is not my plan
1991 L98 automatic 2.59 rear end
I already bought some parts
Mods
Trans and rear end
1.-2200 stall converter (bought it, not installed)
2.- 3.07 rear end (bought it, not installed)
3.- transgo (bought it, not installed) and oil cooler
4.- beam plates (bought it, not installed)
5.- speedo gears, red,green 92 sensor for 3.07 (bought it, not installed)
6- nitto treadwear 100 installed
engine
1.- Long tube headers installed
2.- no cats, doublé 2 1/4 exhaust to borla mufflers installed
3.- 3 wire heated 02sensor installed
4.- 1.6 rr self align installed
5.- stock 48mm throttlebody
6.- edelbrock ported base manifold AND slp siamese ported runners(bought it, not installed)
[/URL]7.- lt4 springs (bought it, not installed), afr springs I supose are better option for 268 xfi cam
8.- 30 lb injectors (bought it, not installed), I red that 24 is enough but pcmforless suggested 30lb
9.- walbro 255 fuel pump (bought it, not installed)
10.- k&n,cutted airlid,adjustable fuel pressure regulator installed
11.- msd 6al installed
12.- moates apu1 for fine tuning installed
13.-pcmforless chip not boughted until buy cam (baseline)
14.- egr, frisbie,airpump deleted
brakes
15.- c5 front discs, calipers, zr1 booster, hawk racing pads,stainless hoses
I wanted 180cc afr heads and 268xfi cam
the Price between 180cc and 195cc is the same, I know that I will need to reduce combustión chambers.
what is your advice about the size of heads ?
I dont use this car as daily driver and I dont use it as drag car (maybe 3 times a year), I use it for fun and ocasionally trips
difference in torque and hp ?
bigger body throttle is needed ? 52mm I guess, not 58mm
edelbrock base is heavily ported to work with 195cc heads probably reach 5500 rpm with thsi intake
I dont have the camshaft then I can buy another model if is better for this setup
i have the car since new, only have 50,000 miles, the engine is running strong, I dont plan to stroke it to 383 then if leave 350cid the 180cc is better option ?, I red that 195cc Works great on 350 and you have opportunity to grow later but this is not my plan
- 2200 rpm converter
- transgo shift kit (keep the cooler)
- Dual exhaust with Borla mufflers (keep the borlas if you can and put on your stock pipe)
- edelbrock ported base and SLP runners
- LT4 springs
- Walbro 255
- MSD6AL
With the money.... buy a 2800 rpm 10" converter, put on a stock pipe if you have it. Buy one of the following: Superram/Miniram/HSR/EFI SP/converter LT-1.... doesn't matter so much which one.... just pick one. Buy the AFR 195's, run your stock fuel pump and ignition. Find a few bucks for good drag radials. Cam it based upon the intake and heads you choose. Consider a Mike Jones cam... he always seems to find an extra 10-20 hp over the shelf grinds.
The set-up you were contemplating building is a 340-350 HP combination.... but why do that, when you can have a 400+ HP set-up for about the same money ? This can be the difference between a mid 12 second car and a mid to high 11 second car. Fairly dramatic difference.
Good luck with whatever you choose !
Thread Starter
Pro
Joined: Apr 2000
Posts: 589
Likes: 3
From: Acapulco Guerrero
If I was you, I'd sell or return the:
- 2200 rpm converter
- transgo shift kit (keep the cooler)
- Dual exhaust with Borla mufflers (keep the borlas if you can and put on your stock pipe)
- edelbrock ported base and SLP runners
- LT4 springs
- Walbro 255
- MSD6AL
With the money.... buy a 2800 rpm 10" converter, put on a stock pipe if you have it. Buy one of the following: Superram/Miniram/HSR/EFI SP/converter LT-1.... doesn't matter so much which one.... just pick one. Buy the AFR 195's, run your stock fuel pump and ignition. Find a few bucks for good drag radials. Cam it based upon the intake and heads you choose. Consider a Mike Jones cam... he always seems to find an extra 10-20 hp over the shelf grinds.
The set-up you were contemplating building is a 340-350 HP combination.... but why do that, when you can have a 400+ HP set-up for about the same money ? This can be the difference between a mid 12 second car and a mid to high 11 second car. Fairly dramatic difference.
Good luck with whatever you choose !
- 2200 rpm converter
- transgo shift kit (keep the cooler)
- Dual exhaust with Borla mufflers (keep the borlas if you can and put on your stock pipe)
- edelbrock ported base and SLP runners
- LT4 springs
- Walbro 255
- MSD6AL
With the money.... buy a 2800 rpm 10" converter, put on a stock pipe if you have it. Buy one of the following: Superram/Miniram/HSR/EFI SP/converter LT-1.... doesn't matter so much which one.... just pick one. Buy the AFR 195's, run your stock fuel pump and ignition. Find a few bucks for good drag radials. Cam it based upon the intake and heads you choose. Consider a Mike Jones cam... he always seems to find an extra 10-20 hp over the shelf grinds.
The set-up you were contemplating building is a 340-350 HP combination.... but why do that, when you can have a 400+ HP set-up for about the same money ? This can be the difference between a mid 12 second car and a mid to high 11 second car. Fairly dramatic difference.
Good luck with whatever you choose !
1.-2800rpm torque converter with 3.07 rear end ?
2.- transgo shifter kit, I already use this in other cars, and I like it
3.- exhaust ; i have headers to 1 central muffler 2 intake 2 exhaust (2 1/4) to 2 rear mufflers (sounds great and I believe the central muffler Works like a balancer
4.- msd 6al, I alraady have it; i supose thta no gave any imprvement but Works like a rev limiter
5.- I use nitto treadwear 100 tires, improves the handling and better grip
6.- I will try to found a superram intake
Last edited by Eduardo L98 1991; Aug 12, 2013 at 12:37 PM.
Thread Starter
Pro
Joined: Apr 2000
Posts: 589
Likes: 3
From: Acapulco Guerrero
