I used to own a set of TFS heads. I bought them a few years back when they were a very decent head. I since sold them when the AFR Eliminator head came on the scene. I have had both heads flowed and I am posting the results. Just for one, I will post some results from my friend 113 (1989 C4) heads as well.

I will be bolting these on a 421 sbc, and hope to see excellent port velocity, and torque everywhere!!

.200 lift(intake/exhaust) Trickflow-138/98, AFR-143/113, L-98-122/102
.300 lift(intake/exhaust) Trickflow-190/130, AFR-199/161, L-98-161/131
.400 lift(intake/exhaust) Trickflow-230/156, AFR-246/195, L-98-188/150
.500 lift(intake/exhaust) Trickflow-253/174, AFR-276/214, L-98-197/169
.600 lift(intake/exhaust) Trickflow- 260/185, AFR-286/218, L-98-N/A

http://store.summitracing.com/partde...5&autoview=sku Trickflow head has a 2.02/1.60 valve, 195cc/62cc.

http://www.adperformance.com/index.p...roducts_id=208 AFR has a 2.05/1.60 valve, 195cc/65cc.

Anyways, Just some bit of information for you guys. The TFS head did rather well, but it seems like the AFR is the best bang for your buck head in today's market. I know its not the best head for my 421 build, but it will have to do. Hope you enjoyed the thread. Just so you know that is condensation on the aluminum on the heads. That's what happens when you go from -20 weather to plus 20.

If anyone else has had there heads flowed that are out of the box or ported, Let's see how they did! :thumbs:

AFR'S







TRICKFLOW'S

 

I've been waiting for someone to post independent numbers on the Eliminator heads, and it looks like your numbers are very close, and in fact slightly better than what AFR posted on their site. I will strongly consider these for my 383 LT1/4 build.

 

Good info Enrique.

 

I don't know what you're building for but it will make great power for sure. A 220/227 head could make a bit more power but it will want extra camshaft, rpm, and maybe more compression. If you're building a manual trans daily driver, you'll have more than enough bottom end grunt.