Re: Which cam for this budget 351w build ?

gmsmkr April 14th 2016, 10:32 am

I see what ya saying

supervel45 April 14th 2016, 11:26 am

whitefield wrote:I am building a customer his first street / strip car. I am basing this build off of the parts that he already has and off of the GT40 crate engine . [URL=https://s1097.photobucket.com/user/mustang872/media/image_18.jpeg.html][/UR]

So the cam that was in the crate 351 was a Hyd flat tappet . 491 in lift 509 ex lift. Duration @.050 in 220 ex 230 Lsa is 112. Compression is 9.0:1 compression on the for GT40 engine.

The block he has is 96 351w roller block , GT40P heads.speed pro .030 hypereutectic flat top Pistons with 4 valve reliefs. Which cam would be the best for this combo ?

Cam 1 Trick Flow Specialties TFS-51403001 - Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L
Camshaft, Hydraulic Roller, Advertised Duration 275/279, Lift .499/.510, Lobe Sep. 112, Small Ford, 5.0L, Each

Cam 2 Trick Flow Specialties TFS-51403002 - Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L
Camshaft, Hydraulic Roller, Advertised Duration 286/294, Lift .542/.563, Lobe Sep. 112, Small Ford, 5.0L, Each

The cam that came in it
is starting to sound better after all this almost if it just had a little more
lift.

rmcomprandy April 14th 2016, 7:21 pm

gmsmkr wrote:I see what ya saying

The heads which came on this "B351" crate engine were the original GT-40 heads as on the 93 Cobra Mustangs but, it was said that he has the "P" versions which came on later Explorer vehicles so, it seems that without an entire inventory, (as it is not a true "B351" crate engine), it would be an impossibility to figure out what is and is not preferred.

Using the original parts list presented here ... the Trick Flow STAGE 3 hydraulic roller cam or the CompCams hydraulic roller camshaft used in the FRPP original A392 crate motor #35-522-8 would be the "off the shelf" winners.

whitefield April 14th 2016, 7:41 pm

IDT-572 wrote:
gmsmkr wrote:With my limited knowledge on the iron gt40 heads most of what I have messed with they run out of steam around 580 valve lift... now there are ways to crutch them but with the heads flowing so well down low they are a killer head for a solid flat tappet cam combo with 600 valve lift or less... this is all just from what I have messed with them

Your correct on a 302 inch engine, but I'm with Randy on air speed, I think you will see a choke and power loss on a good cammed Windsor.

Cross section is very small on the intake and exhaust. peak flow is less than 200 cfm @ .600 and exhaust wont break 130 cfm.

Blending won't pick up much.

Blake you and Randy are correct and I too agree. That's why I was basing it off the ford crate GT40 headed build. That is why I was looking for a cheap off the shelf Hyd roller cam . I was looking for a Hyd roller cam that will work as good or better than the none available Hyd flat tappet crate engine cam and with his 96 roller cam block.

rmcomprandy April 14th 2016, 7:57 pm

whitefield wrote:

Blake you and Randy are correct and I too agree. That's why I was basing it off the ford crate GT40 headed build. That is why I was looking for a cheap off the shelf Hyd roller cam . I was looking for a Hyd roller cam that will work as good or better than the none available Hyd flat tappet crate engine cam and with his 96 roller cam block.

I particularly like that CompCams FRPP Crate motor cam but, you said inexpensive and I don't think it is;
probably around $285.00

supervel45 April 14th 2016, 9:56 pm

http://www.ebay.com/itm/Ford-Performance-M-6250-X303-Cam-Roller-Lifters-and-Double-Roller-Chain-Kit-/281998650033?hash=item41a86deab1:g:F2YAAOSwAvJXCV-m&vxp=mtr

Don't know where this X is going to end at but, it looks pretty affordable now.

IDT-572 April 15th 2016, 9:32 am

The TFS hyd roller cams used to be the best bang for the buck, but I haven't bought one in a while.

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