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 Crower 60243 vs. 60916 in 400?
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Phil
The Great White Buffalo

USA
7219 Posts

Posted - 04 Apr 2016 :  10:15:38 AM  Show Profile  Reply with Quote
Does anyone here have more than a passing experience with the Crower 60243 & 60916 cams?

I'm now mapping out a redo on one of my 400's and plan to use some large valve 16's (non ported-just cleanup/housekeeping) I already have. CR should end up at approx 10:1. Which of these cams would be more suited to an 8.40 effective first gear (2.56 final drive for cruising)? Since I will be changing out the existing rear gears for this project I also have the option of going with an effective 8.95 first gear (2.73 final drive for cruising) but this would be my second choice and only if it achieves a better overall balance with cam selection. 27" tall tire.

(For comparison, using a factory example of a 74 TA with 2.43 first gear (ST-10) and a 3.42 R&P, the effective first gear would be 8.31 and with comparable size tires.)

Bowties are for Pee-wee Herman. "Chevy": even the name sounds cheap, but not as cheap as your Pontiac will be with an LS transplant.

Edited by - Phil on 04 Apr 2016 1:49:46 PM

cal30_sniper
Tribal Scout

5 Posts

Posted - 12 Apr 2016 :  1:54:13 PM  Show Profile  Reply with Quote
I'm interested to see if anyone chimes in here. I'm slowly putting together a 400 at the moment, and I'm also stuck at the cam selection phase. I'll be running a zero-decked 400 block with forged pistons/rods, and a pair of Edelbrock 72cc Performer RPM heads. I have a 2801 Summit cam that I would like to run with 1.65:1 rockers, but I've also been wondering if the 60916 or 60243 wouldn't be a better choice for a smooth driver type setup. Trans is a Doug Nash 4+1 with 2.76:1 rear gears, which is about the same as an ST-10 with 3.4x-3.5x gears and an overdrive.
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Phil
The Great White Buffalo

USA
7219 Posts

Posted - 13 Apr 2016 :  10:55:49 AM  Show Profile  Reply with Quote
Well that's interesting because I too am running a 4+1 trans. I've not had issues with more aggressive cams after dialing in the carbs and timing curves, thus no issues with "chuggle" at cruising speeds so the 2801 isn't in the running for my project. If anything, I may consider the 2802 as a fall back.


Bowties are for Pee-wee Herman. "Chevy": even the name sounds cheap, but not as cheap as your Pontiac will be with an LS transplant.
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Blued and Painted
Chief PONTIAC

USA
3406 Posts

Posted - 14 Apr 2016 :  1:43:25 PM  Show Profile  Reply with Quote
My 60243 in a 455 in running around 11 or 12 inches of vacuum at idle @ 8000 ft.
Over all, I Like It. A bit soggy at low rpm's.



Bull Nose Formula/ 461/ Q-Jet/
TH400/ 3.08 8.5 / R44TS.
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cal30_sniper
Tribal Scout

5 Posts

Posted - 14 Apr 2016 :  7:17:15 PM  Show Profile  Reply with Quote
The 2802 was also on the list of suggested cams for my setup. I'm pretty certain that the 2801 is too small, so I'll probably be looking to go bigger. I have a 236/242 roller cam that I picked up used, but I feel that's a bit too large on the opposite end of the spectrum. I'd love to run a roller that was 224/230 or 230/236 with the aluminum heads. I'm going for a very streetable setup and still trying to bring in good highway and around town gas mileage. I tend to drive my cars a lot, and race them very, very little. A/C and power brakes will also call for me to keep my idle vacuum up some.

Edited by - cal30_sniper on 14 Apr 2016 7:18:33 PM
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