AFR 180cc's for a 305 TPI, any good?
07-16-2001, 06:55 PM
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Car: 1986 Iroc Camaro
Engine: 305 TPI
Transmission: Th700R4 Jr. Raptor
AFR 180cc's for a 305 TPI, any good?
Alright, I have heard about using the aluminum L98 heads, as well as the S/R torquer heads for the 305 engines, but has anyone ever purchased a pair of AFR 180cc's?
AFR seems to have good press here, I was wondering if this set was any good? I would assume they would be better than the S/R torquer right?
Wonder what the gains would be... Already e-mailed them about it, but who knows if ill recieve a responce. Please follow up if anyone here knows anything about these heads on a 305 TPI.
Thanks!
------------------
1986 IROC Camaro
305 TPI "LB9"
3.23 gears
Doesn't know enough about cars.
AIM: jesusathome
AFR seems to have good press here, I was wondering if this set was any good? I would assume they would be better than the S/R torquer right?
Wonder what the gains would be... Already e-mailed them about it, but who knows if ill recieve a responce. Please follow up if anyone here knows anything about these heads on a 305 TPI.
Thanks!
------------------
1986 IROC Camaro
305 TPI "LB9"
3.23 gears
Doesn't know enough about cars.
AIM: jesusathome
07-17-2001, 06:47 AM
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Car: 89rs
Engine: 400Sb
Transmission: Tremec 3550
your probably going to have valve clearance issues. A 202 intake valve will not normally clear the 3.750 inch bore of a 305. If you use a very small cam maybe
07-17-2001, 09:24 AM
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from another post on this board:
I found a "Chevy High Performance" mag. article from a December 1993 issue, on pages 108-110 called, "Potluck Buildup" using a 305 with:
AFR 190 cc Alum. cylinder heads, surfaced to obtain 58cc chambers, using 2.02/1.60 valves cutback to 1.99/1.55"dia. for clearance.
A recent (Sept. '00) price check with AFR confirmed a fully assembled price of $1,595 for a set of these heads.
A hydr.(non roller) AFR camshaft (2.18/.223 @ .050, .460/.470" valve lift using 1.5 rockers, 110 lobe separation, installed w/2 degrees of advance)was used. They used 1.6 ratio stamped-steel rocker arms. Compression ratio was measured at 8.87:1. This was with +.030" overbore, using TRW flattop pistons.
An Edelbrock Performer RPM intake was used with a Holley 650 Dbl. pmpr, & 1 5/8" dia. headers.
The dyno pulls resulted in 387 hp @ 6000 rpm, 368 lb-ft of torque @ 4,000 rpm.
They felt even more power was attainable using a custom chip & some fine-tuning. T
The final engine configuration was emissions legal, idled easily @ 750 rpm and maintained 340 lb-ft of torque in the 3000-6000 rpm range.
I found a "Chevy High Performance" mag. article from a December 1993 issue, on pages 108-110 called, "Potluck Buildup" using a 305 with:
AFR 190 cc Alum. cylinder heads, surfaced to obtain 58cc chambers, using 2.02/1.60 valves cutback to 1.99/1.55"dia. for clearance.
A recent (Sept. '00) price check with AFR confirmed a fully assembled price of $1,595 for a set of these heads.
A hydr.(non roller) AFR camshaft (2.18/.223 @ .050, .460/.470" valve lift using 1.5 rockers, 110 lobe separation, installed w/2 degrees of advance)was used. They used 1.6 ratio stamped-steel rocker arms. Compression ratio was measured at 8.87:1. This was with +.030" overbore, using TRW flattop pistons.
An Edelbrock Performer RPM intake was used with a Holley 650 Dbl. pmpr, & 1 5/8" dia. headers.
The dyno pulls resulted in 387 hp @ 6000 rpm, 368 lb-ft of torque @ 4,000 rpm.
They felt even more power was attainable using a custom chip & some fine-tuning. T
The final engine configuration was emissions legal, idled easily @ 750 rpm and maintained 340 lb-ft of torque in the 3000-6000 rpm range.
07-17-2001, 02:53 PM
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Car: 1986 Iroc Camaro
Engine: 305 TPI
Transmission: Th700R4 Jr. Raptor
Wow! Thoes are really impressive gains! That still sounds cheaper to purchase than a 350 with AFR 190's.
Wonder how the heads work for supercharging...
If thoes are the gains, it sounds damn impressive to me. Wonder how much that would drop if i used my TPI system, after porting it and so forth...
------------------
1986 IROC Camaro
305 TPI "LB9"
3.23 gears
Doesn't know enough about cars.
AIM: jesusathome
Wonder how the heads work for supercharging...
If thoes are the gains, it sounds damn impressive to me. Wonder how much that would drop if i used my TPI system, after porting it and so forth...
------------------
1986 IROC Camaro
305 TPI "LB9"
3.23 gears
Doesn't know enough about cars.
AIM: jesusathome
07-17-2001, 04:31 PM
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Car: 4
Engine: 6
Transmission: 5
That sounds just like a typical magazine article...
"An Edelbrock Performer RPM intake was used with a Holley 650 Dbl. pmpr"...
"attainable using a custom chip & some fine-tuning"...
"emissions legal"...
Anybody else notice any problems with those 3 statements being used to describe one motor? This is fantasy land, pure and simple. It reads like a composite of all inexperienced wannabe hot-rodders' wet dreams. They never built any such motor, obviously. That intake isn't emissions legal, and you don't use a chip to tune a Holley double-pumper.
I find it hard to believe that someone as relatively reputable as CHP would publish such an obviously defective, fabricated article. But stranger things have happened. This is why I don't subscribe to any hot-rod magazines.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
"An Edelbrock Performer RPM intake was used with a Holley 650 Dbl. pmpr"...
"attainable using a custom chip & some fine-tuning"...
"emissions legal"...
Anybody else notice any problems with those 3 statements being used to describe one motor? This is fantasy land, pure and simple. It reads like a composite of all inexperienced wannabe hot-rodders' wet dreams. They never built any such motor, obviously. That intake isn't emissions legal, and you don't use a chip to tune a Holley double-pumper.
I find it hard to believe that someone as relatively reputable as CHP would publish such an obviously defective, fabricated article. But stranger things have happened. This is why I don't subscribe to any hot-rod magazines.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
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