There are no headers on car ......was looking on ways to make the car have more horsepower and to sound beefier ...suggestions ?
327/275 HP 67 RS --- What can you do to the engine ?
pdm1968620
1 - 9 of 9 Posts
Joined
·
79 Posts
There are no headers on car ......was looking on ways to make the car have more horsepower and to sound beefier ...suggestions ?
No more than a good 268 to 272 cam and a Holley 1850, 600 cfm 4-barrel on their 300-36 high-rise and a set of headers and free flowing exhaust will wake the little jewel right up!
Nothing fancy at all!!
Been there, had a hopped up 300hp/327 so know!
pdq67
Nothing fancy at all!!
Been there, had a hopped up 300hp/327 so know!
pdq67
Joined
·
10,183 Posts
My 67 was a 275hp 327, I installed the GM 350hp 327 Corvette hyd cam in it and it ran very nicely. No lope and it perked it up real nice. I agree on the TH350.
David
David
Joined
·
661 Posts
PDQ67,
What kind of HP do you think your 327 combination (that you described above) would have.
What kind of HP do you think your 327 combination (that you described above) would have.
355hp at 5,000 rpm and 385 t at 4,000 rpm w/ no more than being about 9.75 to 1 CR and doing a bowl blend to the stock medium valve heads and running open headers, imho. (CC's 268HE hy-cam is all)..
Make it a solid lifter cam like a good old CC 270S and you get..
375hp at 5500 rpm and 405 t at 4,000 rpm!!
pdq67
Make it a solid lifter cam like a good old CC 270S and you get..
375hp at 5500 rpm and 405 t at 4,000 rpm!!
pdq67
Joined
·
10,183 Posts
I forget the specs of the 350 hp 327, but that's the engine I was looking at when I bought that cam for my 67. It was the highest HP hydraulic cammed Small Block chevy of the day. I don't recall if the 350 hp 327 had the 2.02 heads or not, but I think with that cam you get pretty close to 350hp out of it if you have a good carb and intake. Pocket porting the heads adds another 15-25hp, headers about the same, so if you have the cam, pocket port and headers I'd say you are getting pretty close to the 350 hp level even if the 350 horse Corvette engine had larger valves. Remember GM rated these engines on the dyno with no accessories like water pump and open exhaust. engines of today are net HP.
I found the cam to be very smooth running, and still got 17mpg with the 3.08 gears I had in it. There may be a better cam grind these days, but this one worked well for me back around 1969.
I actually snuck the cam in by working on it all night, it was done by morning.
My dad would not have approved of my hopping up my car at age 18, so my goal was a stock sounding cam that would make more power.
David
I found the cam to be very smooth running, and still got 17mpg with the 3.08 gears I had in it. There may be a better cam grind these days, but this one worked well for me back around 1969.
I actually snuck the cam in by working on it all night, it was done by morning.
My dad would not have approved of my hopping up my car at age 18, so my goal was a stock sounding cam that would make more power. David
I think the old -151 cam is like 290(?)/221, 114/110, 447" lift.
Excellent old cam by me and I ran it in my 350SS engine 1200 from new back then as my daily driver!! Sucker would pull like a freight train!!
I could chase a 300hp/327 that got 2.5 cars on me down by the top of 3rd gear EASY!!!!
And I'd beat my Buddy, Nuts' 1/2 ton '50 Chevy 5 window P/U that he installed a new '64 375hp/327 FI and 4-speed and 3.36 posi- in by right at a half a car!! Nuts installed the old -151 cam in my engine for me for a 6-pack!
Nuts would just say, "Dam that thing run's!!"
pdq67 and my M-20, 3.31, posi- car!
Excellent old cam by me and I ran it in my 350SS engine 1200 from new back then as my daily driver!! Sucker would pull like a freight train!!
I could chase a 300hp/327 that got 2.5 cars on me down by the top of 3rd gear EASY!!!!
And I'd beat my Buddy, Nuts' 1/2 ton '50 Chevy 5 window P/U that he installed a new '64 375hp/327 FI and 4-speed and 3.36 posi- in by right at a half a car!! Nuts installed the old -151 cam in my engine for me for a 6-pack!
Nuts would just say, "Dam that thing run's!!"
pdq67 and my M-20, 3.31, posi- car!
1 - 9 of 9 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
