TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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im bout to purchase some afr 180 heads in january but which afr head is best for my application. being an 88 GTA do i have center bolt heads.... which combustion chamber size would be good for me. I was wondering how much horsepower improvement would i see over the stock l98 heads that im currently using now.... will i feel the power difference with these heads... would these go well with my mods... the link below is the list of afr 180 heads... i dunno which one would be best for my mods which is also listed below...
5.7 350 factory l98 engine
Rebuilt l98 heads
Cranes 2032 cam 452/465 214/220 112lsa
Cranes matching springs
SA performance double timing chain
Cranes Adjustable fuel regulator set at 45psi
Flowmasters 80’s series 3.5 inch catback
Catco High Flow converter
Custom 3 inch built Y-pipe
Heated O2 sensor
Hedman Longtube Street headers
Ported and Siamesed SLP runners
Ported and Siamesed Plenum
Ported Edelbrock High flow Intake
SVO 24lb Injectors
SLP cold air intake with K&N air filter
SLP airfoil
IAT relocated to SLP air box
160 thermostat
Throttlebody Bypass
EGR delete
Heater valve delete
Air/smog delete
LT1 Starter
Heavy duty flywheel
MSD 8.5 super conductor wires
Accel super coil
Performance radiator
Pro built 700r4 rated at 500 horsepower
B&M shift kit
Tranny cooler
2500 converter
High flow water Pump
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if you could even shave them down to 60 cc if possible that would be excellent for that motor. YOu'll notice big gains even with that cam but i'd suggest going to a similar duration cam but with lots more lift. those heads will like 500-550 lift
could i just buy 1.6 rockers.... i really like this cam and it works very well within my powerband.. love the idle of this cam too, very aggressive.. the afr heads work from idle to 5500 rpm according to their website which is excellent the my 2032 cam and hogged out tpi... with 1.6 rockers that would put me around 482/496 lift i believe..... with this combo could i see over 300whp and 12sec timeslips.....
could i just buy 1.6 rockers.... i really like this cam and it works very well within my powerband.. love the idle of this cam too, very aggressive.. the afr heads work from idle to 5500 rpm according to their website which is excellent the my 2032 cam and hogged out tpi... with 1.6 rockers that would put me around 482/496 lift i believe..... with this combo could i see over 300whp and 12sec timeslips.....
I do not believe you will see more then 275 RWHP with the stock style TPI system. It may run high 12's if you can hook it up.
__________________ 1988 Formula 5.7L/6sp 3.91 gears,10.6 cr, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, Superram, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT, E-Tec 200 heads, SDPC Vortec manifold, ZZ-409 cam.
Best ET 12.17
Best 60 FT 1.754
Best MPH 113.1
RWHP 369
RWTQ 399
oh i think i am making about 275whp right now.... maybe even a little over.... none of my tpi parts are stock and every part of it is competely siamesed and ported except for the base which is not saimesed.... i beleive you can make over 300whp if you do your homework.... thats what im doin....
ok ive narrow the search on summit and i dont know which ones to get... which one would be best for my car..... i dont need the most expensive ones either...
just wondering how much hp does afr 180 heads offer compared to the stock iron l98 heads.... would i see like 50 or more horsepower with these... and how much do you think it would cost me to do a head swap at some shop.... thanks.
my dad did the all the intake and porting.. i just helped him out..... i can buy the heads but i dont have no one to put them on for me cause he said that is he too busy....
Goes back together the same way it comes apart......
Just be sure to pay attention to what your removing and where it goes.......
It's always scary @ first, but you'll be walking around like a rooster when it's done.
Maybe this is you're dads' way of sayin he's tired of doin it for ya and giving you a little push to do it for yourself......
Go out and grab yourself a Haynes Manual or the equivalent and learn how to do it..... believe me it's not rocket science......
__________________ 5.7Liter (357"+.040) 50,000kms/30,000mi, AirFlow Research Eliminator 180 Heads, Holley Stealth Ram, LPE 211/219 Cam, Comp Cams Pro Magnum 1.6 Roller Rockers, CAI, MAF screens removed, TPIS Airfoil, ADS Superchip, 24Lbs Accel Injectors, Kirban AFPR, MSD 6A Ignition Box and Blaster Coil, Moroso Ultra 40 wires, E3 DiamondFire plugs, A/C-Smog pump Delete with 1LE pulleys and Heaterbox, March 3 Piece Underdrive Pulleys, 160' Thermostat, Throttle Body Coolant Bypass, Hedman Elite Ceramic Coated Longtube Hedders pn68468, Custom Y-pipe with Flowmaster 3" Catback+80 Muffler, Trans-go Shift Kit. Corvette Servo
actually he is tired of it and he does not wanna do it again...i really thought about doing it myself but im new at this... i mean ive seen him take it all the way down to the block and it really isn't that hard but im just scared cause i really have no experience in doing it.... and all the bolts and wires and stuff... scares me...
like gta sammy said, it's no biggy, just take your time, my big peice of advice to you, label everything, every wire hose cable rod ect ect ect, also make sure that you get new head bolts(the stockers are probably stretched) also don't forget to drain your coolent before you pull your intake. I would also paint the heads of the intake bolts when the are out, not too much paint though(then a wrench won't fit) but enough to make them look a little nicer. good luck have fun! and remeber digital camaras are your friend!
Everyone's scared the first time.....
I've only done 2 rebuilds in my time & I taped and tagged everything....... It's just quicker and easier to put it back together that way.
When I did my AFR head swap this summer I took like 200 pictures..... they come in handy I'll tell ya.
I wished I lived down south where I could be doing a head swap in November / December. My car has been parked in the garage for 6 weeks already.... I guess it keeps the miles off of it
__________________ 5.7Liter (357"+.040) 50,000kms/30,000mi, AirFlow Research Eliminator 180 Heads, Holley Stealth Ram, LPE 211/219 Cam, Comp Cams Pro Magnum 1.6 Roller Rockers, CAI, MAF screens removed, TPIS Airfoil, ADS Superchip, 24Lbs Accel Injectors, Kirban AFPR, MSD 6A Ignition Box and Blaster Coil, Moroso Ultra 40 wires, E3 DiamondFire plugs, A/C-Smog pump Delete with 1LE pulleys and Heaterbox, March 3 Piece Underdrive Pulleys, 160' Thermostat, Throttle Body Coolant Bypass, Hedman Elite Ceramic Coated Longtube Hedders pn68468, Custom Y-pipe with Flowmaster 3" Catback+80 Muffler, Trans-go Shift Kit. Corvette Servo
I live in northwest florida and I am glad to say we rarely see snow, I would hate having to put off working on my camaro for several months because of the weather.
quote 88fastgta im bout to purchase some afr 180 heads in january but which afr head is best for my application. being an 88 GTA do i have center bolt heads.... which combustion chamber size would be good for me. I was wondering how much horsepower improvement would i see over the stock l98 heads that im currently using now.... will i feel the power difference with these heads... would these go well with my mods... the link below is the list of afr 180 heads... i dunno which one would be best for my mods which is also listed below...
zoom zoom is all i can say!
350 machined stock block, fully polished and balanced internals, block oil port mods (thanks Grumpy),Summit Race Damper, poly motor and trans mounts, AFR 180 comp heads,Comp 262xfi cam, 1.6rollers, X-Ram, ARP motor bolts internal and external, Dual air cleaner mod, 2.13 Tbi's, Stan'sTri -Y's, Pypes Stainless X duals with Street Pro mufflers, G-Force trans crossmember, Aeromotive AFPR with dual feed lines, 80# injectors, injector pod mods, 50psi fuel pump, Prominator, EBL, Innovative Wideband, IAT, updated CTS and knock sensors, Raptor trans wakeup kit, Shifter mod - full manual and 1st gear hold/select, 2400 Raptor convetor, trans cooler and remote filter, 3.73 rear with hardened tips, Jacobs custom ceramic plug wires, Accel shorty header plugs, Stage 8 header locks, Accel performance coil and cap, many doses of Crossfire Injection Forum wisdom filled spirit!
quote 88fastgta im bout to purchase some afr 180 heads in january but which afr head is best for my application. being an 88 GTA do i have center bolt heads.... which combustion chamber size would be good for me. I was wondering how much horsepower improvement would i see over the stock l98 heads that im currently using now.... will i feel the power difference with these heads... would these go well with my mods... the link below is the list of afr 180 heads... i dunno which one would be best for my mods which is also listed below...
zoom zoom is all i can say!
350 machined stock block, fully polished and balanced internals, block oil port mods (thanks Grumpy),Summit Race Damper, poly motor and trans mounts, AFR 180 comp heads,Comp 262xfi cam, 1.6rollers, X-Ram, ARP motor bolts internal and external, Dual air cleaner mod, 2.13 Tbi's, Stan'sTri -Y's, Pypes Stainless X duals with Street Pro mufflers, G-Force trans crossmember, Aeromotive AFPR with dual feed lines, 80# injectors, injector pod mods, 50psi fuel pump, Prominator, EBL, Innovative Wideband, IAT, updated CTS and knock sensors, Raptor trans wakeup kit, Shifter mod - full manual and 1st gear hold/select, 2400 Raptor convetor, trans cooler and remote filter, 3.73 rear with hardened tips, Jacobs custom ceramic plug wires, Accel shorty header plugs, Stage 8 header locks, Accel performance coil and cap, many doses of Crossfire Injection Forum wisdom filled spirit!
is that what the crossfire injection looks like! if it is wow, thats looks cool, I had never seen one before, how do they perform?
one more in the car... RWHP I don't know but she runs so bad I want to get the new 700r4 with the lower first gear so she's more controllable... and add offest trailing arms with 15x10 rims and some good rubber... i was told with the 3.73 rear its like a 4.66 with the low first of the 700r4 and I have a shifter mode that allows me to hold first to whatever alls I can say in a blink I am doing 70+mph...
is that what the crossfire injection looks like! if it is wow, thats looks cool, I had never seen one before, how do they perform?
That is the X-ram setup its a Weiland excelorator intake with a custom made top plate... it works fine. The thing is a real torque monster the way she is setup. Snaps your head back in the seat!
If your dad doesn't want to do it, would he consent to supervise you doing it? The idea is you would do the work while he sat and watched you, but he would be there to catch a mistake if you started to overlook something. here isn't a whole lot to doing heads. The main thing is installing them carefully so that you don't damage the head gaskets when you set them down, (should not be difficult with aluminum heads), putting sealant on the threads of the bolts that go into the water jackets so you don't get water leaks, and torquing the head bolts in the correct sequence and spec. Finally setting the valve lash correctly. The main problem that Isee is that you spent too much time watching your dad work instead of learning to do it yourself.
Another possibility for you is to take an auto shop course at your local community college. The tuition fee will be a lot less expensive than paying a mechanic to do it, and that way you can learn from a pro.
bringing this back from the dead... i will be doin the afr 180 and 1.6 rocker arm swap in feb of 2010.... building an engine from scratch with my dad and with all the deletes we have done to the car, a headswap seems really easy to me now....
