from
Tony Mamo
"Got a call this afternoon from a forum member inquiring about our 220 Eliminator heads.
They were officially upgraded to "available....now taking orders" last week while I was attending SEMA.
The customer that called said it might be a good idea to inform everyone so now consider yourself informed! (fact of the matter was it was good advice....LOL)
For those not up on the 220, it has replaced our 210 as the largest factory bolt on head with everything exactly in GM L98 factory location. Neither studs or valves are moved and straight rocker arms fit perfectly just as they would if you were installing a 195 or 210 cc street head. The intake valve is slightly larger than a 210 @ 2.100 diameter (same as a 227 Eliminator). We widened the pushrod pinch as much as possible (while still retaining clearance for a 5/16 pushrod) and the heads flow clean to .700 lift. In fact the bulk of them flow more than we advertise but we have really made an effort in the last year or two to post numbers we can easily meet or beat.
http://garage.grumpysperformance.com/index.php?threads/port-speeds-and-area.333/
Had a chance to spotflow a 65cc version today....they are very impressive for a head that has everything in OEM locations (no 60-40 split).
Int.
.200....150
.300....207
.400....260
.500....296
.600....322
.700....331
Exh.
.200....126
.300....178
.400....215
.500....236
.600....247
.700....251
Note the exhaust is also very strong....especially the low and midlift flow. Part of that is due to not having the 60/40 split which unshrouds and positions the exhaust closer to the center of the cylinder (which moves the intake valve closer to the wall having a slightly negative effect on the low lift intake flow).
Also, this product is only available in our Competition ported (finer) CNC levels. You would have to have a very high level of accuracy to produce these type of numbers and the Comp programs remove less material with each pass producing a finer more consistent shape and finish (far less tool deflection also).
When I get a minute I will snap a few pics of the head I tested today (just a production piece sold to one of our customers who ordered it at SEMA) and I will add them to this thread.
Thanks guys
Tony Mamo
AFR R&D and Product Design Mgr.
(661)257-8124 Ext. 109
Tony Mamo
"Got a call this afternoon from a forum member inquiring about our 220 Eliminator heads.
They were officially upgraded to "available....now taking orders" last week while I was attending SEMA.
The customer that called said it might be a good idea to inform everyone so now consider yourself informed! (fact of the matter was it was good advice....LOL)
For those not up on the 220, it has replaced our 210 as the largest factory bolt on head with everything exactly in GM L98 factory location. Neither studs or valves are moved and straight rocker arms fit perfectly just as they would if you were installing a 195 or 210 cc street head. The intake valve is slightly larger than a 210 @ 2.100 diameter (same as a 227 Eliminator). We widened the pushrod pinch as much as possible (while still retaining clearance for a 5/16 pushrod) and the heads flow clean to .700 lift. In fact the bulk of them flow more than we advertise but we have really made an effort in the last year or two to post numbers we can easily meet or beat.
http://garage.grumpysperformance.com/index.php?threads/port-speeds-and-area.333/
Had a chance to spotflow a 65cc version today....they are very impressive for a head that has everything in OEM locations (no 60-40 split).
Int.
.200....150
.300....207
.400....260
.500....296
.600....322
.700....331
Exh.
.200....126
.300....178
.400....215
.500....236
.600....247
.700....251
Note the exhaust is also very strong....especially the low and midlift flow. Part of that is due to not having the 60/40 split which unshrouds and positions the exhaust closer to the center of the cylinder (which moves the intake valve closer to the wall having a slightly negative effect on the low lift intake flow).
Also, this product is only available in our Competition ported (finer) CNC levels. You would have to have a very high level of accuracy to produce these type of numbers and the Comp programs remove less material with each pass producing a finer more consistent shape and finish (far less tool deflection also).
When I get a minute I will snap a few pics of the head I tested today (just a production piece sold to one of our customers who ordered it at SEMA) and I will add them to this thread.
Thanks guys
Tony Mamo
AFR R&D and Product Design Mgr.
(661)257-8124 Ext. 109
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