Page 25 of Intake Manifolds by Holley Performance Products, Inc.

welcome to a new era in race manifold technology weiand has raised the bar on intake manifold design through the use of industry leading computational fluid dynamics software technology this advanced has typically only been used in the aerospace industry for aircraft design weiand has taken this technology and designed a new line of team gtm manifolds perfect for aggressive street machines and comp/super class big block powerplants computer engineered and dyno proven to produce more horsepower and torque as a result of superior cylinder to cylinder distribution gives this piece the edge over the competition and ensures safe consistent air/fuel ratios for your engine permanent mold castings provide weight savings of 10 to 20 over traditional sand cast pieces while maintaining uniform wall thickness for porting when you look for the pinnacle of performance price and quality look to weiand completely new designs optimized for today s bigger engines industry leading computational fluid dynamics cfd airflow design software utilized for optimized air/fuel distribution and power dyno testing of the new weiandŽ 7623 found an additional 17 peak hp and 17 lb/ft torque over brand e p/n 2907 testing on a 540 standard deck bb chevy 14:1 comp rect port aluminum heads 1150 cfm dominatorŽ carb 1 spacer 2-1/2 headers intake manifolds features/benefits installation notes ˇ designed for today s larger cubic inch big block chevy race engines ˇ standard deck manifolds will fit tall deck blocks with use of ˇ perfect for hard core drag racers in the nhra super comp weiand spacer p/n 8204 rectangular port or 8206 oval port super gas and super street classes and ihra quick rod ˇ recommended fel-pro gasket numbers super rod hot rod categories 7620 7621 1210 1212 1212 s-3 ˇ permanent mold casting process for lighter and more 7622-7624 1275 1275 s-3 consistent castings with uniform wall sections perfect for porting ˇ available in oval and rectangular port configurations ˇ available in tall deck and standard deck versions specifications ˇ available in 4150 or 4500 carb flanges ˇ power band 3000 to 7500rpm oval port versions ˇ dyno proven to make 17hp more than competitor s comparable intake 3000 to 8000rpm rectangular port versions ˇ overall height frt 5.96 rr 5.96 recommended accessories ˇ port size oval 1.87 height 1.60 width ˇ holley hp race carbs ˇ port size rectangular 2.28 height 1.48 width ˇ holley dominatorŽ race carbs new part port size carb flange deck height rpm band 7620 7621 7622 7623 7624 oval oval rectangular rectangular rectangular 4150 4500 4150 4500 4500 standard standard standard standard tall 3000-7500 3000-7500 3500-8000 3500-8000 3500-8000 note the above part numbers supersede part numbers 7521 7522 7523 7524 7528 tech line 270-781-9741 29

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