Ford 400 flat top pistons
[DOCX File]141speedway.com
https://info.5y1.org/ford-400-flat-top-pistons_1_09465d.html
Any flat top or reverse dome piston may be used as long as it has the stock wrist pin height for the engine being used (except 400 Chevy). Valve relief may be cut into the piston.
Merced Speedway
B. Pistons: Flat top. or Dish. pistons ONLY. No lighting of any kind. No domed pistons allowed. C. Heads: Stock OEM or World Products S/R Torquer Cylinder Heads for Chevrolet part# 4266 and 4267 or part #5303 for Ford. Dart heads, part #10024361 and Speedway part #9154622 for Chevy.
[DOC File]2007 CRAWFORD COUNTY SPEEDWAY PURE STOCK RULES
https://info.5y1.org/ford-400-flat-top-pistons_1_622faf.html
O.E.M. Stroke must match block. NO 400 or larger cubic inch parts allowed. Maximum 361 c.i. For GM, 363 c.i for Ford & 370 c.i. For Mopars. Must use OEM or OEM like pistons. Flat Top Pistons only. Stroke 3.48” GM 3.5” Ford & Mopar – Rod 5.75” GM, Ford & Mopar - CCS Approved O.E.M. - GM cylinder head. NO vortex head. No Ford after market ...
[DOC File]2012 Late Model Rules - Grundy County Speedway
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2. Ace Engine Pistons. Flat top pistons only - no part of piston may protrude above top of cylinder. (maximum) compression ratio 10.5 to 1 (10.510 is illegal). Maximum engine displacement for GM and Ford is 362 c.i. inches, Dodge will be 364 c.i. and minimum 350 c.i. for GM, 346 c.i. for Ford. 3. Ace Engine Camshaft. The max lift on any roller ...
[DOC File]2009 Pro All Stars Series Rules
https://info.5y1.org/ford-400-flat-top-pistons_1_798cc8.html
h. Any flat top piston permitted. Valve relief may be cut into piston. Pistons may not exceed engine compression rule. No pop-up or dish pistons. Dodge pistons can remove minimal material from top of piston to maintain 10:99 compression. i. Cylinder heads must comply with requirements in rule 10.11. j.
nebula.wsimg.com
5. If using a 9” inch Ford rear-end, all mounts on rear-end must be level left to right. OEM rear-end mounts must be level left to right, uppers and lowers. Mounts cannot be more than 2 ½” to the center of bolt from top of housing. Lower control arm mounts cannot be lower than 3” to the center of the bolt to the bottom of the axle tube.
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