head size question
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,022
Likes: 6
From: CT
head size question
I posted last week about aluminum heads. But I'm still undecided on what size head I should get. The car is a street car but not a daily driver. I want to make 400+hp without losing all my low end torque.
heres the setup:
4sp with 3.73 gears
MOTOR:
355ci
comp xs274s solid cam (236/242 .501/ .510 110LSA)
roller rockers
rpm intake
750 speed demon
1 5/8" headers
compression will be about 10.5:1 with a 64cc head
I wanted to get canfield 200cc, 2.05", 65cc aluminum heads. But I don't know if the intake runners and valves will be too big.
Should I stay with a 2.02" valve and something in the 180-195cc range for the runners?
heres the setup:
4sp with 3.73 gears
MOTOR:
355ci
comp xs274s solid cam (236/242 .501/ .510 110LSA)
roller rockers
rpm intake
750 speed demon
1 5/8" headers
compression will be about 10.5:1 with a 64cc head
I wanted to get canfield 200cc, 2.05", 65cc aluminum heads. But I don't know if the intake runners and valves will be too big.
Should I stay with a 2.02" valve and something in the 180-195cc range for the runners?
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,022
Likes: 6
From: CT
Has anyone ever heard of engine pro heads??
I found a guy who sells engine pro aluminum heads. They have 64cc, 190cc, 2.02". He said they just came out.
they are suppose to flow at:
cfm@28" int. ext.
.100 77.23 61.79
.200 123.58 92.68
.300 173.00 132.84
.400 219.35 151.38
.500 248.70 160.65
.600 265.69 163.74
I found a guy who sells engine pro aluminum heads. They have 64cc, 190cc, 2.02". He said they just came out.
they are suppose to flow at:
cfm@28" int. ext.
.100 77.23 61.79
.200 123.58 92.68
.300 173.00 132.84
.400 219.35 151.38
.500 248.70 160.65
.600 265.69 163.74
Team Owner
Joined: Feb 2005
Posts: 32,519
Likes: 1
From: central America
St. Jude Donor '08-'09
Check out Pro Topline heads...kind of what I'm considering for when I make the shift to aluminum heads...I'm following this thread fairly closely as my goals are similar to yours (I'd like 300hp at the wheels from my 355). Here's a link to their 23 degree 64cc chamber 200cc intake heads.
http://www.procylinderheads.com/123400000a.htm
trw
http://www.procylinderheads.com/123400000a.htm
trw
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,022
Likes: 6
From: CT
those pro topline look pretty good. I know a guy who used them on a 383 with a milder cam and made like 430hp.
does anyone know a good place to get these heads? I would have to check on the springs, my cam requires dual springs.
does anyone know a good place to get these heads? I would have to check on the springs, my cam requires dual springs.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Not saying anything bad about either head but the Pro top line 200 head flows very close to the AFR 195 head and price is pretty close. It looks like a toss up between the two. Anyone have first hand knowledge of the Pro Top Line head.
Team Owner
Joined: Feb 2005
Posts: 32,519
Likes: 1
From: central America
St. Jude Donor '08-'09
If you go to their homepage they have a where to buy page that shows different vendors. Don't see anything in CT, but there may be some places near you where you can order them...looks like Jegs and Summit don't carry them anymore.
http://www.procylinderheads.com/wheretobuy.htm
trw
http://www.procylinderheads.com/wheretobuy.htm
trw
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,022
Likes: 6
From: CT
I just called summit up on the phone and they said that pro topline was bought out by another company. This company is called (RHS) Racing head service, and they bought the Pro Topline name. The new RHS versions of the pro topline heads will be more money and are not coming out until next month.
If you want the pro toplines you have to find a supplier that has left overs.
How much are the AFR heads??
If you want the pro toplines you have to find a supplier that has left overs.
How much are the AFR heads??
Team Owner
Joined: Feb 2005
Posts: 32,519
Likes: 1
From: central America
St. Jude Donor '08-'09
I've seen them go for about $1300 on ebay, which I think is the rough cost. Used seem to go for around $1000 from my minimal research. They aren't cheap, but those who do have them, swear by them. Although some extra machining may have to be done after you buy them (check out thevetterisbetter threads on his problems with oil pooling).
trw
trw
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,022
Likes: 6
From: CT
ya I think that the AFRs might be a little out of my price range right now. I was hoping to stay around 1,000 maybe 1,100 tops. I still need to buy roller rockers and probably new pushrods.