May '24 Chat -- MayDay, a holiday or a cry for help?

malibu795

malibu795

misspeelleerr
Apr 28, 2007
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in the buckeye state
TheBac said:
Adam, if you still want/need a set of 243s, I found these:

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Click to expand...
Im pretty sure I'm staying with the 317s. I currently have 2 sets one on the burb and another on the spare engine that needs rebuilt. And since I'm putting new pistons in, I can easily adjust for the bigger chambers..

From what I've found, Richard Holder being one of the guys, and forum searches seam to back him up.
His 6.0/408 stuff and test of 317 heads on a 408. Though he didn't see what TQ could be made with the 317 heads with his 408/afr245 setup comparison

Stripped LQ4 with electric water pump does around 410/440 HP/TQ with factory intake and 1 7/8 headers and 317 heads..
All out the stock 317 heads support 525-550hp if CR is bumped.

The TQ test which makes most torque with a 408 with AFR 245 heads.
Lm7 cam 191/190 468" 450/522 HP/TQ with at least 500tq from 3400-4800rpm
Crane 206/212 500" 114°lsa cam 515/556hp/TQ with at least 500tq from 2700-5400. Unfortunately Crane cams doesn't exist.
I'll be keeping the CR, 87 friendly so 9.5-9.75 range. Rough plotting the 212/218 cam I'm looking at and 317 heads should put me very close to what the 206/212 and afr245 heads did.

Should end up somewhere around ~475hp and nice flat 500+TQ power curve, be happy on 87, pull 17-19mpg again and be pleasant to drive.

Scream shot of his 408/AFR245 head setup video
Screenshot_20240507-113701.png
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
7,881
302
83
42
in the buckeye state
kidturbo said:
I can today show ya an assembled SBC I did in early 90's in with serial # set 003 of AFR heads on it. I was also the first person to drop a valve in one and sent them back for repair the following week. Once they explained why ya couldn't spin a 1990 factory roller cam 7500R's, they've been fine head ever since...
Click to expand...
I wanted a set of afrs 265s for the BBC in my wagon, they were still 2-3 months out and TFS 280s were available at the time so I went with them.
 
kidturbo

kidturbo

Piston Tester
Jul 21, 2010
2,338
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Somewhere On The Ohio
www.marinemods.us
I heard some of the BBC boat guys running AFR were seeing issues with the valve guide being to tight for sustained high RPM straight outs the box a while back. Besides that I've only heard good things about em since I stopped playing with gasoline. TrickFlow was hot on the Fords back then..

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1FastBrick

1FastBrick

Well-known member
Dec 1, 2016
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malibu795 said:
Im pretty sure I'm staying with the 317s. I currently have 2 sets one on the burb and another on the spare engine that needs rebuilt. And since I'm putting new pistons in, I can easily adjust for the bigger chambers..

From what I've found, Richard Holder being one of the guys, and forum searches seam to back him up.
His 6.0/408 stuff and test of 317 heads on a 408. Though he didn't see what TQ could be made with the 317 heads with his 408/afr245 setup comparison

Stripped LQ4 with electric water pump does around 410/440 HP/TQ with factory intake and 1 7/8 headers and 317 heads..
All out the stock 317 heads support 525-550hp if CR is bumped.

The TQ test which makes most torque with a 408 with AFR 245 heads.
Lm7 cam 191/190 468" 450/522 HP/TQ with at least 500tq from 3400-4800rpm
Crane 206/212 500" 114°lsa cam 515/556hp/TQ with at least 500tq from 2700-5400. Unfortunately Crane cams doesn't exist.
I'll be keeping the CR, 87 friendly so 9.5-9.75 range. Rough plotting the 212/218 cam I'm looking at and 317 heads should put me very close to what the 206/212 and afr245 heads did.

Should end up somewhere around ~475hp and nice flat 500+TQ power curve, be happy on 87, pull 17-19mpg again and be pleasant to drive.

Scream shot of his 408/AFR245 head setup video
View attachment 123561
Click to expand...
Adam, TSP has a stage 1 truck cam similar to the crane cam. I think the stage 2 is still a better choice.

The added displacement will eat up the cam some. You can also custom order a cam if you want to change the LSA or something. They used to let you do it right on the site for an additional $25 if you wanted to change the LSA. But things have changed since the original owners sold TSP. I am sure people also made mistakes too when placing orders.



TSP Stage 1 Low Lift Truck Cam Specs: 208/214, .550/.550, 112 LSA
  • Engines best suited for: 4.8, 5.3, 5.7, 6.0
  • Desired Compression ratio for cam: 9.5:1+
  • Recommended Springs Required: GM LS6 Single Beehive Springs
  • Aftermarket Stall Converter Required: No, not needed
  • Upgraded Rear Gear Required: No, not needed
  • Operating RPM Range: 1200-5600
  • Power Increase: Gains of 45 Horsepower and 21 Ft. Pounds of Torque!
  • Drivability: Will drive just like stock after proper tuning!


TSP Stage 2 Low Lift Truck Cam Specs: 212/218, .550/.550 112 LSA
  • Engines best suited for: 4.8, 5.3, 5.7, 6.0
  • Desired Compression ratio for cam: 9.5:1+
  • Recommended Springs Required: GM LS6 Single Beehive Springs
  • Aftermarket Stall Converter Required: No, not needed
  • Upgraded Rear Gear Required: No, not needed
  • Operating RPM Range: 1200-5800
  • Power Increase: Gains of 51 Horsepower and 23 Ft. Pounds of Torque!
  • Drivability: Will drive just like stock after proper tuning!

BTR also has a 206/212 cam https://briantooleyracing.com/btr-camshaft-gen-3-4-truck-stage-1-v2-btr30612120.html

BTR STAGE 1 TRUCK CAM V2 - BTR30612120

SPECS: 206/212 .553/.553 112+0



I don't condone using Comp Cams but they also offer a 206/212 .515/.525 112 LSA SKU CL54-408-11
 
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1FastBrick

1FastBrick

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Dec 1, 2016
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I certainly hope you can find the COMP version cheaper than their MSRP if you go that route...

TSP also has a High lift version of the same cam I mentioned earlier. If you don't like the 112 I am sure they will grind it on whatever LSA you want. But it will bring the power in sooner on the 112. and that's what your after especially on a stroker.

www.texas-speed.com

TSP Stage 2 High Lift Truck Camshaft

TSP Stage 2 High Lift 5.3 Truck Camshaft
www.texas-speed.com www.texas-speed.com
TSP Stage 2 High Lift Truck Cam Specs: 212/218 .600/.600 112 LSA

  • Engines best suited for: 4.8, 5.3, 5.7, 6.0
  • Desired Compression ratio for cam: 9.5:1+
  • Recommended Springs Required: Pac 1219 or TSP/PAC Dual Valve Springs
  • Aftermarket Stall Converter Required: No, not needed
  • Upgraded Rear Gear Required: No, not needed
  • Operating RPM Range: 1200-5800
  • Power Increase: Gains of 62 Horsepower and 29 Ft. Pounds of Torque.
  • Drivability: Will drive just like stock after proper tuning!
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
7,881
302
83
42
in the buckeye state
1FastBrick said:
I certainly hope you can find the COMP version cheaper than their MSRP if you go that route...

TSP also has a High lift version of the same cam I mentioned earlier. If you don't like the 112 I am sure they will grind it on whatever LSA you want. But it will bring the power in sooner on the 112. and that's what your after especially on a stroker.

www.texas-speed.com

TSP Stage 2 High Lift Truck Camshaft

TSP Stage 2 High Lift 5.3 Truck Camshaft
www.texas-speed.com www.texas-speed.com
TSP Stage 2 High Lift Truck Cam Specs: 212/218 .600/.600 112 LSA

  • Engines best suited for: 4.8, 5.3, 5.7, 6.0
  • Desired Compression ratio for cam: 9.5:1+
  • Recommended Springs Required: Pac 1219 or TSP/PAC Dual Valve Springs
  • Aftermarket Stall Converter Required: No, not needed
  • Upgraded Rear Gear Required: No, not needed
  • Operating RPM Range: 1200-5800
  • Power Increase: Gains of 62 Horsepower and 29 Ft. Pounds of Torque.
  • Drivability: Will drive just like stock after proper tuning!
Click to expand...
Definitely go for that cam, especially if it's not much to adjust to 114 or 115lsa
 
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