Cam recommendations 540 Build 1966 Coupe
06-07-2007, 12:34 PM
#41
Drifting
[SPOILER][QUOTE= I'd still look to build a big cube motor...they sure are fun. Just use good enough heads etc to get it to rev.[/SPOILER]
Spoke with guys today who would be doing my porting/gas flowing etc (who have also done many of Europes top drag & race cars) and they said to 'go whatever way I wish' as they can open out the heads/inlet to suit. They said "to just remember what I want to use the car for" i.e. street. Over here in Blighty we have to bear in mind the cost of our gas. At the equivalent of $2.25 a gallon even a small journey can be a wallet breaker. I would be mortified having layed out good money for a high-spec big cube engine to then get mileage significantly below 10 mpg like some of the pro-street guys. We have a guy over here who only now builds-up drag & pro-street cars using F.A.S.T injection software/hardwear on whatever intake set-up you want. One of his customers runs an injected single quad 11 sec. big cube Chevy truck and is supposed to record 20 mpg on a run. Don't know what speed that is at however. Makes a Kinsler/Hilborn set-up seem less of a dream (except for the cost!)
Spoke with guys today who would be doing my porting/gas flowing etc (who have also done many of Europes top drag & race cars) and they said to 'go whatever way I wish' as they can open out the heads/inlet to suit. They said "to just remember what I want to use the car for" i.e. street. Over here in Blighty we have to bear in mind the cost of our gas. At the equivalent of $2.25 a gallon even a small journey can be a wallet breaker. I would be mortified having layed out good money for a high-spec big cube engine to then get mileage significantly below 10 mpg like some of the pro-street guys. We have a guy over here who only now builds-up drag & pro-street cars using F.A.S.T injection software/hardwear on whatever intake set-up you want. One of his customers runs an injected single quad 11 sec. big cube Chevy truck and is supposed to record 20 mpg on a run. Don't know what speed that is at however. Makes a Kinsler/Hilborn set-up seem less of a dream (except for the cost!)
06-07-2007, 01:36 PM
#42
Le Mans Master
Spoke with guys today who would be doing my porting/gas flowing etc (who have also done many of Europes top drag & race cars) and they said to 'go whatever way I wish' as they can open out the heads/inlet to suit. They said "to just remember what I want to use the car for" i.e. street. Over here in Blighty we have to bear in mind the cost of our gas. At the equivalent of $2.25 a gallon even a small journey can be a wallet breaker. I would be mortified having layed out good money for a high-spec big cube engine to then get mileage significantly below 10 mpg like some of the pro-street guys. We have a guy over here who only now builds-up drag & pro-street cars using F.A.S.T injection software/hardwear on whatever intake set-up you want. One of his customers runs an injected single quad 11 sec. big cube Chevy truck and is supposed to record 20 mpg on a run. Don't know what speed that is at however. Makes a Kinsler/Hilborn set-up seem less of a dream (except for the cost!)
Gas is around $3.00 a gallon, you can buy it cheaper?
06-07-2007, 06:45 PM
#43
Drifting
06-09-2007, 02:51 PM
#44
Le Mans Master
YIKES !!!
About 20 minutes from me I can get 110 octane for 4.99 a gallon and there is a place right at the corner that has 100 for 5.99. However I notice on my bike that when I run the 100 there is soot on the swingarm but with the 110 it is clean
Sorry about that price. If I was to have to pay that much it would have to go scary fast............ maybe that way the thrill would last awhile.
Doug
06-09-2007, 04:31 PM
#45
Race Director
Is there any difference in the cam bearings and cam from year to year starting with a 1965 L78 396, then a 1966 427, and from 67 to whatever year BB?
06-09-2007, 06:33 PM
#46
Le Mans Master
The rear cam bearing has a grove and three holes.
The camshaft has to have a groove so the oil will go past the camshaft to the other two holes that supply oil to the lifters.
Pic of the groove on the camshaft.
06-09-2007, 09:35 PM
#48
Drifting
YIKES !!!
About 20 minutes from me I can get 110 octane for 4.99 a gallon and there is a place right at the corner that has 100 for 5.99. However I notice on my bike that when I run the 100 there is soot on the swingarm but with the 110 it is clean
Sorry about that price. If I was to have to pay that much it would have to go scary fast............ maybe that way the thrill would last awhile.
Doug
About 20 minutes from me I can get 110 octane for 4.99 a gallon and there is a place right at the corner that has 100 for 5.99. However I notice on my bike that when I run the 100 there is soot on the swingarm but with the 110 it is clean
Sorry about that price. If I was to have to pay that much it would have to go scary fast............ maybe that way the thrill would last awhile.
Doug
06-10-2007, 04:53 PM
#49
Le Mans Master
Late stuff. Or at least if should. What is the casting number of the block?
The block number means more than anything. A 942 block (1966 427) is the early cam even though some people say thay came in early 1967 corvettes.
The block number means more than anything. A 942 block (1966 427) is the early cam even though some people say thay came in early 1967 corvettes.
06-10-2007, 10:58 PM
#51
Race Director
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If you have a correct sized carb...next to nothing. *Might*be better on driveability...but I know some folks who constantly tinker with their EFI trying to make it perfect. Just depends on how picky you are I guess. But with a cam like yours, a carb should be very smooth anyway.
JIM
JIM
06-11-2007, 05:02 PM
#52
Drifting
To '75400' Interesting remarks from '427Hotrod' re. your cam specs and that it should be a smooth driver whether it has injection or carb. i looked at your engine specs. and have a question, are the duration figures at .050" lift?
08-17-2008, 01:21 PM
#53
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Good thread!
I'm going to repeat a few things already stated and throw in a few things of my own!
For a 540 in anything other than a tow rig, go rectangle port heads!
Match the cam and heads (along with everything else) but cam and heads first, THE PRICE!
It's my veiw that a hyd roller is the BEST way to go for good hp and still make some bottom and mid range torque! I currently have a GMPP 572/620 in my 1990 454SS pickup. 3.73 gears, 3000 converter, weight around 4500#, best time of 12 flat @ 114 mph, 325/50/15 M/T drag radials and stock suspension. Best 60' is high 1.7's, any harder and it goes up in smoke!
The GMPP cam is in fact a Crane peice and I'm not that happy with it! It does sound GOOD! The 572 in the 454SS is a temporary thing. If I were to leave it in I would change the intake for sure and maybe the cam as well! Awhile back Chevy High Performance magazine did an intake and cam change on a 572/620, going to an Edelbrock RPM Air Gap it only lost 10-15 peak hp. Both the average hp and torque went up! Right now I'm not sure what I'm going to do with the 572 but any thing other than all race in a light car I would get rid of the HUGH GMPP intake!
Al
I'm going to repeat a few things already stated and throw in a few things of my own!
For a 540 in anything other than a tow rig, go rectangle port heads!
Match the cam and heads (along with everything else) but cam and heads first, THE PRICE!
It's my veiw that a hyd roller is the BEST way to go for good hp and still make some bottom and mid range torque! I currently have a GMPP 572/620 in my 1990 454SS pickup. 3.73 gears, 3000 converter, weight around 4500#, best time of 12 flat @ 114 mph, 325/50/15 M/T drag radials and stock suspension. Best 60' is high 1.7's, any harder and it goes up in smoke!
The GMPP cam is in fact a Crane peice and I'm not that happy with it! It does sound GOOD! The 572 in the 454SS is a temporary thing. If I were to leave it in I would change the intake for sure and maybe the cam as well! Awhile back Chevy High Performance magazine did an intake and cam change on a 572/620, going to an Edelbrock RPM Air Gap it only lost 10-15 peak hp. Both the average hp and torque went up! Right now I'm not sure what I'm going to do with the 572 but any thing other than all race in a light car I would get rid of the HUGH GMPP intake!
Al
