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Search found 149 matches

by motormonkey
Tue Jan 12, 2021 10:45 am
Forum: Engine Tech
Topic: 427 Build And Drag Test
Replies: 33
Views: 2013

Re: 427 Build And Drag Test

Nice. Other than weight, those gm cast highrise intakes weren't that bad compared to some aftermarket intakes. I liked the square carb pattern better tho. Are you going to run the cast exhaust for the full sleeper effect? Yes its heavy........this build was about using parts I had lying around that...
by motormonkey
Tue Jan 12, 2021 8:20 am
Forum: Engine Tech
Topic: 427 Build And Drag Test
Replies: 33
Views: 2013

Re: 427 Build And Drag Test

Nice. Other than weight, those gm cast highrise intakes weren't that bad compared to some aftermarket intakes. I liked the square carb pattern better tho.
Are you going to run the cast exhaust for the full sleeper effect?
by motormonkey
Tue Jan 12, 2021 8:13 am
Forum: Engine Tech
Topic: Lq4 compression for towing
Replies: 30
Views: 1053

Re: Lq4 compression for towing

Yes, knock down the sharp edges. My opinion for your build is keep compression ratio to stock paramiters ,add a good cam, clean up heads and a good cooling system. Nothing worse than having to high compression and all the timing pulled out for reduced knock, egt will get high, long pedal down towing...
by motormonkey
Wed Dec 09, 2020 4:00 pm
Forum: Engine Tech
Topic: Protecting valve seats when porting.
Replies: 34
Views: 2062

Re: Protecting valve seats when porting.

Duct tape and lots of it. Use the old style tin foil heater duct tape on the seats (lots of layers), then duct tape over that and the spindle on the grinder. It's worked for me in the past.
by motormonkey
Wed Dec 09, 2020 3:55 pm
Forum: Engine Tech
Topic: Has anyone used Muggy Weld rods on cast iron
Replies: 9
Views: 790

Re: Has anyone used Muggy Weld rods on cast iron

A LS exhaust manifold is some kind of steel. You can weld those all day long. Just to be fair.
by motormonkey
Wed Nov 11, 2020 5:53 pm
Forum: Engine Tech
Topic: Possible Power Grid + Crank Triiger Timing Issue
Replies: 10
Views: 468

Re: Possible Power Grid + Crank Triiger Timing Issue

Every nitrous engine I've dealt with that was a power maker has a super slow chamber and cam exhaust timing is different. If your only running it n/a you might need allot more timing than its getting. I've seen a couple of engines where the headers would glow running a nitrous tune in n/a. I'd try ...
by motormonkey
Tue Nov 10, 2020 7:18 am
Forum: Engine Tech
Topic: Possible Power Grid + Crank Triiger Timing Issue
Replies: 10
Views: 468

Re: Possible Power Grid + Crank Triiger Timing Issue

Every nitrous engine I've dealt with that was a power maker has a super slow chamber and cam exhaust timing is different. If your only running it n/a you might need allot more timing than its getting. I've seen a couple of engines where the headers would glow running a nitrous tune in n/a. I'd try m...
by motormonkey
Mon Nov 09, 2020 7:23 pm
Forum: Engine Tech
Topic: Possible Power Grid + Crank Triiger Timing Issue
Replies: 10
Views: 468

Re: Possible Power Grid + Crank Triiger Timing Issue

You say the AFR goes lean? Are you sure you are not just lean?
by motormonkey
Thu Oct 22, 2020 10:44 pm
Forum: Engine Tech
Topic: New guy here, looking for some turbo ign timing help
Replies: 7
Views: 256

Re: New guy here, looking for some turbo ign timing help

The old turbo buicks and Pontiacs had vacuum/boost cans for distributers. With that said. Your best and only option I believe is a map able electronic ignition. The biggest gift efi has given to us is the fact we can program where and when things happen. No reason not to use the tech to our advantag...
by motormonkey
Wed Oct 21, 2020 11:15 am
Forum: Engine Tech
Topic: Epoxy For Blocks
Replies: 26
Views: 1138

Re: Epoxy For Blocks

I have done cast welding with my tig. I buy the arc rod and remove the flux. It isn't cheap but it's cheaper than a loss sometimes. It's a process but not voodoo as its been made out to be.
by motormonkey
Wed Sep 16, 2020 9:16 am
Forum: Engine Tech
Topic: Modifying an LS 5.3 Head for Towing
Replies: 22
Views: 764

Re: Modifying an LS 5.3 Head for Towing

If you are running the factory 3:73 than you need to go to 4:11 rear gear for towing. It was a option. Your Trans will thank you also.
Or swap in a 6.0, probably cost you the same sans labor. Your trany will than need help.
by motormonkey
Fri Sep 11, 2020 5:19 pm
Forum: Engine Tech
Topic: Volva Penta 8.1L cam info needed
Replies: 6
Views: 464

Re: Volva Penta 8.1L cam info needed

Sent you a pm. Hope it helps you out.
by motormonkey
Wed Aug 19, 2020 10:32 am
Forum: Engine Tech
Topic: Calvin Elston exhausts?
Replies: 27
Views: 2669

Re: Calvin Elston exhausts?

Having done headers and exhaust with pre bends and a manderal bender $3500 for headers is pretty spot on for a semi custom set. Material thats good starts around $1500 for a V8. I've done some sets that have cost $3000 plus just in materiel plus cost with trial by error tuning. That's nothing exotic...
by motormonkey
Mon Aug 03, 2020 5:17 pm
Forum: Engine Tech
Topic: No power out of ideas
Replies: 30
Views: 1657

Re: No power out of ideas

Verify timing on balancer, check that valves aren't to tight, check valve to piston clearence, check valve springs, try different ignition ( coil, box, plugs, wires) check carb is opening all the way and check jetting not to rich.
by motormonkey
Fri Jul 31, 2020 1:02 pm
Forum: Engine Tech
Topic: MaxSpeedingRods T70 Turbo For Dummies
Replies: 14
Views: 441

Re: MaxSpeedingRods T70 Turbo For Dummies

Find turbo from a 3.8 buick. Draw thru and cheap. I gave one to somebody who's putting in on his corvair.
The best education and answers to all your questions will be from experience.