Questions from a first time engine builder

flyin 5.8 · 07-09-2002, 06:25 PM

Here's what I've got. The questions will follow. This engine will be going into a '90 LX hatch w/C4 trans, mostly street, some strip

351w bored .040 over
crank--stock .010 under
rods--stock
pistons--TRW forged, 13cc dish
9.50:1 C/R
carb--Holley 750cfm double pumper
intake--weiand stealth
cam-- fms #a335,
.491/.509lift I/E,
spec @ .004" (SPEC @ .050")
DURATION 280/290 I/E (220/230 I/E)
IVO 31* BTDC (3* BTDC)
IVC 69* ABDC (37* ABDC)
EVO 80* BBDC (52* BBDC)
EVC 30* ATDC (-2* BTDC)
LCA 112*
ICA 109*
ECA 115*
OVERLAP 61*
1.6 roller rockers
Long tube headers w/flowmasters (need to buy)
AFR 185 58cc heads (need to buy)

First question - Desktop Dyno says 478hp @ 6000-6500rpm, 454 ft/lb @ 5000rpm. does this sound correct?

Second question - Will the stock block, crank & rods live long making that kind of power? (I've heard that 400 is about as much as you want to do.)

Third question - What kind of ET/MPH?

Fourth question - When you are looking for 400HP and get 475HP is that a good thing? LOL

RPM427 · 07-09-2002, 07:04 PM

Can you make a desktop dyno run for me??

tarmon8r · 07-09-2002, 07:38 PM

my question to you is what kind of head are you going to run? and imoho i would run an edelbrock intake, just going with experience, they usually work great, the rpm intake for you.

tarmon8r · 07-09-2002, 07:40 PM

engine analyzer to your right will give you guestimates on 1/4 mile times

07-09-2002, 06:25 PM	#1
flyin 5.8 Registered Member Join Date: Apr 2002 Location: Holland, Michigan Posts: 73	Questions from a first time engine builder Here's what I've got. The questions will follow. This engine will be going into a '90 LX hatch w/C4 trans, mostly street, some strip 351w bored .040 over crank--stock .010 under rods--stock pistons--TRW forged, 13cc dish 9.50:1 C/R carb--Holley 750cfm double pumper intake--weiand stealth cam-- fms #a335, .491/.509lift I/E, spec @ .004" (SPEC @ .050") DURATION 280/290 I/E (220/230 I/E) IVO 31* BTDC (3* BTDC) IVC 69* ABDC (37* ABDC) EVO 80* BBDC (52* BBDC) EVC 30* ATDC (-2* BTDC) LCA 112* ICA 109* ECA 115* OVERLAP 61* 1.6 roller rockers Long tube headers w/flowmasters (need to buy) AFR 185 58cc heads (need to buy) First question - Desktop Dyno says 478hp @ 6000-6500rpm, 454 ft/lb @ 5000rpm. does this sound correct? Second question - Will the stock block, crank & rods live long making that kind of power? (I've heard that 400 is about as much as you want to do.) Third question - What kind of ET/MPH? Fourth question - When you are looking for 400HP and get 475HP is that a good thing? LOL

07-09-2002, 07:04 PM	#2
RPM427 Registered Member Join Date: Aug 2001 Location: Huntington NY Posts: 573	Can you make a desktop dyno run for me?? __________________ -1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway -1994 Ranger w/ 427cid windsor (daily beater) check it out!

07-09-2002, 07:38 PM	#3
tarmon8r Registered Member Join Date: Jun 2002 Location: manassas, va Posts: 186	my question to you is what kind of head are you going to run? and imoho i would run an edelbrock intake, just going with experience, they usually work great, the rpm intake for you. __________________ 1983 mustang, 393 cubic inch stroker small block, victor jr heads and intake, gold race 1.6 roller rockers. comp cam 304, 244@ .050. .576" hydralic retro roller cam,lunati rods. block was o-ringed,10:1 forged pistons, speed pro fit fit rings, clevite bearings,msd distributor and igniton,be cool huge radiator, black lite electric fan, march underdrive pulleys, mildon deep sump oil pan, mac 1 3.4" long tube headers, 3" dr gas x-pipe and mac exhaust,ARP bolts. car weighs 2900 lbs w/out driver, sub frames, weld wheels, mickey thompson sportsman pro 26 x 10.5 x 15's,#8 fuel line steel braided

07-09-2002, 07:40 PM	#4
tarmon8r Registered Member Join Date: Jun 2002 Location: manassas, va Posts: 186	engine analyzer to your right will give you guestimates on 1/4 mile times __________________ 1983 mustang, 393 cubic inch stroker small block, victor jr heads and intake, gold race 1.6 roller rockers. comp cam 304, 244@ .050. .576" hydralic retro roller cam,lunati rods. block was o-ringed,10:1 forged pistons, speed pro fit fit rings, clevite bearings,msd distributor and igniton,be cool huge radiator, black lite electric fan, march underdrive pulleys, mildon deep sump oil pan, mac 1 3.4" long tube headers, 3" dr gas x-pipe and mac exhaust,ARP bolts. car weighs 2900 lbs w/out driver, sub frames, weld wheels, mickey thompson sportsman pro 26 x 10.5 x 15's,#8 fuel line steel braided

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