Head gasket question
Thread Starter
Drifting
Joined: Aug 2005
Posts: 1,289
Likes: 3
From: East Waterboro Maine
Head gasket question
Ok, so I've got a noob question about head gaskets. I bought a set of new AFR 305 heads for my 454 +0.030" motor. In the instructions they recommend the following gaskets for Mark IV Blocks:
Felpro 1057, 4.540" Bore
Felpro 1057, 4.630" Bore (why same part # but different bore I don't know. Typo?)
Felpro 1093, 4.625" Bore
All of the above are listed for use on 427/454/502 motors. My bore is 4.280", so could I use any of the above gaskets to "tweak" my CR ratio?
Felpro 1057, 4.540" Bore
Felpro 1057, 4.630" Bore (why same part # but different bore I don't know. Typo?)
Felpro 1093, 4.625" Bore
All of the above are listed for use on 427/454/502 motors. My bore is 4.280", so could I use any of the above gaskets to "tweak" my CR ratio?
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
you need a felpro fpp 1027 for aluminum heads bore 4.370
comp thickness .O39 they come one to the package, or you can use
fpp 1037 same specs but can be used with iron or aluminum heads
summit price $39 .95 or $79.90 for two. These fit 396-454.
all of three you mention are for 4.5 to 4.6 bore blocks
Fpp 1047 shows to be for 4.540 bore fpp 1057 showes to be 4.630 bore
the 1027 and 1037 that fit your block have comp volume of 10.5cc
the 1047 and 1057 have a comp. volume of 11.3. I would go ahead and use
the 1027 or 1037
comp thickness .O39 they come one to the package, or you can use
fpp 1037 same specs but can be used with iron or aluminum heads
summit price $39 .95 or $79.90 for two. These fit 396-454.
all of three you mention are for 4.5 to 4.6 bore blocks
Fpp 1047 shows to be for 4.540 bore fpp 1057 showes to be 4.630 bore
the 1027 and 1037 that fit your block have comp volume of 10.5cc
the 1047 and 1057 have a comp. volume of 11.3. I would go ahead and use
the 1027 or 1037
Last edited by Little Mouse; May 31, 2006 at 09:44 PM.
Thread Starter
Drifting
Joined: Aug 2005
Posts: 1,289
Likes: 3
From: East Waterboro Maine
Originally Posted by Little Mouse
you need a felpro fpp 1027 for aluminum heads bore 4.370
comp thickness .O39 they come one to the package, or you can use
fpp 1037 same specs but can be used with iron or aluminum heads
summit price $39 .95 or $79.90 for two. These fit 396-454.
all of three you mention are for 4.5 to 4.6 bore blocks
Fpp 1047 shows to be for 4.540 bore fpp 1057 showes to be 4.630 bore
the 1027 and 1037 that fit your block have comp volume of 10.5cc
the 1047 and 1057 have a comp. volume of 11.3. I would go ahead and use
the 1027 or 1037
comp thickness .O39 they come one to the package, or you can use
fpp 1037 same specs but can be used with iron or aluminum heads
summit price $39 .95 or $79.90 for two. These fit 396-454.
all of three you mention are for 4.5 to 4.6 bore blocks
Fpp 1047 shows to be for 4.540 bore fpp 1057 showes to be 4.630 bore
the 1027 and 1037 that fit your block have comp volume of 10.5cc
the 1047 and 1057 have a comp. volume of 11.3. I would go ahead and use
the 1027 or 1037
Melting Slicks
Joined: Mar 2004
Posts: 3,472
Likes: 18
From: Lake Ozark, MO
Like forum member "gasket dude" told me the 1027/37 will give you a lot more material between the cylinders with less chance of blow out. You can only use these gaskets if your not way out on the boring..and you're not.
