1/12/2021 UPDATE
Final engine combo and dyno results Post #136
Maiden voyage in my car Post #163
3/16/2022 UPDATE
First day at the track Post #168
11/21/22 UPDATE New Best ET/MPH
Final track results
****
So I am patiently awaiting a PM response from a well known cam designer here (regarding the cam below) and thought I would post this to the board to get your thoughts as well. After much searching here, it seems like a fairly solid combo but I could be missing something. Looking for thoughts on the compatibility of the cam (pretty sure its gtg), and recommendations on roller lifters, and a stall converter and carb to match.
Clay Smith Grind # HR-8800-9-CSR
Adv. Dur 288/300
.050” Duration 229/241
.200” Duration 145/151
Lift .590/.570
Centers 105/113
LSA 109
...with the following build:
My car is ~4000# in full trim with me, a spare tire, jack, and a fairly empty gas tank according to track scale.
10:1 CR, 454 +.030 (~460 cid)
Air Gap intake (have a spare Wieand Stealth RP from previous combo )
Carb undecided (have a spare 770 SA and QJ on hand. May purchase an 850 QF?)
781's 2.19/1.88, 118cc chamber (measured), long slot steel rockers, mild clean up (no porting), gasket match
Sealed Power Hyper -22cc
Appropriate head gasket to set quench to ~.039-.040 or so (block has not been decked, need to check piston depth)
Stock crank (cast) and rods w/ARP bolts
Desired max RPM 6000
Replace existing 1-5/8" headers and 2.25" exhaust with 1.75" headers into 3" collector, 2.5" all the way back, mufflers undecided...
TH400, (soon to be) rebuilt withHughes Performance kit Jakes Performance Stage II kit, upgraded 34 element sprag
Replace stock converter with 3000 stall converter ... open to recommendations here. Not sure exactly what would be best fit for the engine.
8.02 open 3.36 rear gear on a 26" tire (215/70R14). This whole set up may get replaced (another story) but I would like to stay with the same gear. Stock suspension all around with poly bushings front and back.
If you need more detailed please ask. This is a street/strip car that I drive like I stole it about 1000 miles a year. It cruises down the highway at about 3000 rpm. I ran ethanol free 93 octane for about 13 years on my previous 9.3cr 215/219 peanut port build. Great little combo but I am ready for a massive somewhat budget oriented change while I have everything out of the car. I believe this will out perform my previous combo. Trying to get into low 12's eventually (whenever I upgrade the rear end).
Thanks,
-Kevin
Final engine combo and dyno results Post #136
Maiden voyage in my car Post #163
3/16/2022 UPDATE
First day at the track Post #168
11/21/22 UPDATE New Best ET/MPH
Final track results
****
So I am patiently awaiting a PM response from a well known cam designer here (regarding the cam below) and thought I would post this to the board to get your thoughts as well. After much searching here, it seems like a fairly solid combo but I could be missing something. Looking for thoughts on the compatibility of the cam (pretty sure its gtg), and recommendations on roller lifters, and a stall converter and carb to match.
Clay Smith Grind # HR-8800-9-CSR
Adv. Dur 288/300
.050” Duration 229/241
.200” Duration 145/151
Lift .590/.570
Centers 105/113
LSA 109
...with the following build:
My car is ~4000# in full trim with me, a spare tire, jack, and a fairly empty gas tank according to track scale.
10:1 CR, 454 +.030 (~460 cid)
Air Gap intake (have a spare Wieand Stealth RP from previous combo )
Carb undecided (have a spare 770 SA and QJ on hand. May purchase an 850 QF?)
781's 2.19/1.88, 118cc chamber (measured), long slot steel rockers, mild clean up (no porting), gasket match
Sealed Power Hyper -22cc
Appropriate head gasket to set quench to ~.039-.040 or so (block has not been decked, need to check piston depth)
Stock crank (cast) and rods w/ARP bolts
Desired max RPM 6000
Replace existing 1-5/8" headers and 2.25" exhaust with 1.75" headers into 3" collector, 2.5" all the way back, mufflers undecided...
TH400, (soon to be) rebuilt with
Replace stock converter with 3000 stall converter ... open to recommendations here. Not sure exactly what would be best fit for the engine.
8.02 open 3.36 rear gear on a 26" tire (215/70R14). This whole set up may get replaced (another story) but I would like to stay with the same gear. Stock suspension all around with poly bushings front and back.
If you need more detailed please ask. This is a street/strip car that I drive like I stole it about 1000 miles a year. It cruises down the highway at about 3000 rpm. I ran ethanol free 93 octane for about 13 years on my previous 9.3cr 215/219 peanut port build. Great little combo but I am ready for a massive somewhat budget oriented change while I have everything out of the car. I believe this will out perform my previous combo. Trying to get into low 12's eventually (whenever I upgrade the rear end).
Thanks,
-Kevin